./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.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 161acb090810893f5857465330b1e9af98cd436d8b1ab4337fc3709fda2d3260 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:10:23,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:10:23,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:10:23,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:10:23,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:10:23,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:10:23,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:10:23,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:10:23,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:10:23,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:10:23,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:10:23,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:10:23,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:10:23,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:10:23,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:10:23,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:10:23,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:10:23,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:10:23,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:10:23,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:10:23,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:10:23,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:10:23,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:10:23,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:10:23,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:10:23,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:10:23,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:10:23,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:10:23,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:10:23,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:10:23,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:10:23,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:10:23,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:10:23,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:10:23,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:10:23,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:10:23,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:10:23,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:10:23,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:10:23,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:10:23,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:10:23,247 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:10:23,266 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:10:23,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:10:23,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:10:23,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:10:23,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:10:23,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:10:23,271 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:10:23,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:10:23,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:10:23,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:10:23,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:10:23,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:10:23,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:10:23,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:10:23,273 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:10:23,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:10:23,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:10:23,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:10:23,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:10:23,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:10:23,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:10:23,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:10:23,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:10:23,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:10:23,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:10:23,274 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:10:23,275 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:10:23,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:10:23,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:10:23,276 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 161acb090810893f5857465330b1e9af98cd436d8b1ab4337fc3709fda2d3260 [2021-11-06 14:10:23,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:10:23,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:10:23,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:10:23,495 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:10:23,496 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:10:23,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2021-11-06 14:10:23,574 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ec05013/9f8fba717610440c8d4c69ac6dc7526f/FLAGa39c8d9fb [2021-11-06 14:10:24,195 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:10:24,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2021-11-06 14:10:24,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ec05013/9f8fba717610440c8d4c69ac6dc7526f/FLAGa39c8d9fb [2021-11-06 14:10:24,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ec05013/9f8fba717610440c8d4c69ac6dc7526f [2021-11-06 14:10:24,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:10:24,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:10:24,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:10:24,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:10:24,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:10:24,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:10:24" (1/1) ... [2021-11-06 14:10:24,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df42885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:10:24, skipping insertion in model container [2021-11-06 14:10:24,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:10:24" (1/1) ... [2021-11-06 14:10:24,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:10:24,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:10:24,936 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2021-11-06 14:10:25,363 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i[155153,155166] [2021-11-06 14:10:26,046 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-06 14:10:26,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:10:26,196 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:10:26,298 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2021-11-06 14:10:26,315 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i[155153,155166] [2021-11-06 14:10:26,630 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-06 14:10:26,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:10:26,708 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:10:26,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:10:26 WrapperNode [2021-11-06 14:10:26,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:10:26,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:10:26,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:10:26,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:10:26,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:10:26" (1/1) ... [2021-11-06 14:10:26,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:10:26" (1/1) ... [2021-11-06 14:10:27,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:10:27,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:10:27,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:10:27,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:10:27,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:10:26" (1/1) ... [2021-11-06 14:10:27,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:10:26" (1/1) ... [2021-11-06 14:10:27,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:10:26" (1/1) ... [2021-11-06 14:10:27,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:10:26" (1/1) ... [2021-11-06 14:10:27,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:10:26" (1/1) ... [2021-11-06 14:10:27,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:10:26" (1/1) ... [2021-11-06 14:10:27,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:10:26" (1/1) ... [2021-11-06 14:10:27,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:10:27,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:10:27,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:10:27,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:10:27,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:10:26" (1/1) ... [2021-11-06 14:10:27,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:10:27,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:10:27,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 14:10:27,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 14:10:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:10:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:10:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-06 14:10:27,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-06 14:10:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2021-11-06 14:10:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2021-11-06 14:10:27,734 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2021-11-06 14:10:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2021-11-06 14:10:27,734 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_init_transfer [2021-11-06 14:10:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_init_transfer [2021-11-06 14:10:27,734 INFO L130 BoogieDeclarations]: Found specification of procedure bulk_irq [2021-11-06 14:10:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure bulk_irq [2021-11-06 14:10:27,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:10:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:10:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2021-11-06 14:10:27,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2021-11-06 14:10:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-06 14:10:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_submit_int_urb [2021-11-06 14:10:27,735 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_submit_int_urb [2021-11-06 14:10:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-06 14:10:27,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-06 14:10:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure int_irq [2021-11-06 14:10:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure int_irq [2021-11-06 14:10:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:10:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:10:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure fill_frame [2021-11-06 14:10:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_frame [2021-11-06 14:10:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_stream_off [2021-11-06 14:10:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_stream_off [2021-11-06 14:10:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:10:27,737 INFO L130 BoogieDeclarations]: Found specification of procedure isoc_irq [2021-11-06 14:10:27,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isoc_irq [2021-11-06 14:10:27,737 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_input_create_urb [2021-11-06 14:10:27,737 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_input_create_urb [2021-11-06 14:10:27,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:10:27,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2021-11-06 14:10:27,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2021-11-06 14:10:27,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-11-06 14:10:27,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-11-06 14:10:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2021-11-06 14:10:27,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2021-11-06 14:10:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_9 [2021-11-06 14:10:27,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_9 [2021-11-06 14:10:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:10:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-06 14:10:27,788 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-06 14:10:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:10:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:10:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:10:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 14:10:27,788 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:10:27,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:10:27,789 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 14:10:27,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 14:10:27,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:10:27,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:10:27,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:10:41,041 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:10:41,042 INFO L299 CfgBuilder]: Removed 2394 assume(true) statements. [2021-11-06 14:10:41,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:10:41 BoogieIcfgContainer [2021-11-06 14:10:41,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:10:41,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:10:41,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:10:41,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:10:41,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:10:24" (1/3) ... [2021-11-06 14:10:41,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e5f526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:10:41, skipping insertion in model container [2021-11-06 14:10:41,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:10:26" (2/3) ... [2021-11-06 14:10:41,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e5f526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:10:41, skipping insertion in model container [2021-11-06 14:10:41,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:10:41" (3/3) ... [2021-11-06 14:10:41,052 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2021-11-06 14:10:41,055 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:10:41,056 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 14:10:41,100 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:10:41,104 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 14:10:41,104 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 14:10:41,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 3337 states, 3248 states have (on average 1.4550492610837438) internal successors, (4726), 3258 states have internal predecessors, (4726), 63 states have call successors, (63), 20 states have call predecessors, (63), 20 states have return successors, (63), 61 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-06 14:10:41,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 14:10:41,150 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:10:41,150 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 14:10:41,151 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:10:41,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:10:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash 645787444, now seen corresponding path program 1 times [2021-11-06 14:10:41,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:10:41,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105774359] [2021-11-06 14:10:41,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:10:41,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:10:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:10:41,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:10:41,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105774359] [2021-11-06 14:10:41,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105774359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:10:41,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:10:41,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:10:41,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116877305] [2021-11-06 14:10:41,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:10:41,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:10:41,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:10:41,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:10:41,859 INFO L87 Difference]: Start difference. First operand has 3337 states, 3248 states have (on average 1.4550492610837438) internal successors, (4726), 3258 states have internal predecessors, (4726), 63 states have call successors, (63), 20 states have call predecessors, (63), 20 states have return successors, (63), 61 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 3 states, 3 states have (on average 32.333333333333336) 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 14:10:44,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:10:44,078 INFO L93 Difference]: Finished difference Result 9735 states and 14301 transitions. [2021-11-06 14:10:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:10:44,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) 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 14:10:44,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:10:44,117 INFO L225 Difference]: With dead ends: 9735 [2021-11-06 14:10:44,117 INFO L226 Difference]: Without dead ends: 6385 [2021-11-06 14:10:44,136 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:10:44,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2021-11-06 14:10:44,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 6385. [2021-11-06 14:10:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6385 states, 6214 states have (on average 1.4023173479240425) internal successors, (8714), 6228 states have internal predecessors, (8714), 126 states have call successors, (126), 40 states have call predecessors, (126), 40 states have return successors, (126), 122 states have call predecessors, (126), 126 states have call successors, (126) [2021-11-06 14:10:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6385 states to 6385 states and 8966 transitions. [2021-11-06 14:10:44,336 INFO L78 Accepts]: Start accepts. Automaton has 6385 states and 8966 transitions. Word has length 97 [2021-11-06 14:10:44,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:10:44,337 INFO L470 AbstractCegarLoop]: Abstraction has 6385 states and 8966 transitions. [2021-11-06 14:10:44,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) 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 14:10:44,337 INFO L276 IsEmpty]: Start isEmpty. Operand 6385 states and 8966 transitions. [2021-11-06 14:10:44,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-06 14:10:44,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:10:44,341 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, 1, 1, 1] [2021-11-06 14:10:44,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:10:44,341 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:10:44,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:10:44,342 INFO L85 PathProgramCache]: Analyzing trace with hash -27573547, now seen corresponding path program 1 times [2021-11-06 14:10:44,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:10:44,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017434724] [2021-11-06 14:10:44,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:10:44,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:10:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:10:44,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:10:44,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017434724] [2021-11-06 14:10:44,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017434724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:10:44,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:10:44,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:10:44,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066807205] [2021-11-06 14:10:44,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:10:44,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:10:44,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:10:44,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:10:44,525 INFO L87 Difference]: Start difference. First operand 6385 states and 8966 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:44,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:10:44,913 INFO L93 Difference]: Finished difference Result 12562 states and 17681 transitions. [2021-11-06 14:10:44,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:10:44,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-06 14:10:44,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:10:44,951 INFO L225 Difference]: With dead ends: 12562 [2021-11-06 14:10:44,952 INFO L226 Difference]: Without dead ends: 6384 [2021-11-06 14:10:44,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:10:44,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2021-11-06 14:10:45,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 6384. [2021-11-06 14:10:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6384 states, 6213 states have (on average 1.4018992435216482) internal successors, (8710), 6227 states have internal predecessors, (8710), 126 states have call successors, (126), 40 states have call predecessors, (126), 40 states have return successors, (126), 122 states have call predecessors, (126), 126 states have call successors, (126) [2021-11-06 14:10:45,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6384 states to 6384 states and 8962 transitions. [2021-11-06 14:10:45,149 INFO L78 Accepts]: Start accepts. Automaton has 6384 states and 8962 transitions. Word has length 100 [2021-11-06 14:10:45,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:10:45,150 INFO L470 AbstractCegarLoop]: Abstraction has 6384 states and 8962 transitions. [2021-11-06 14:10:45,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:45,150 INFO L276 IsEmpty]: Start isEmpty. Operand 6384 states and 8962 transitions. [2021-11-06 14:10:45,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-06 14:10:45,155 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:10:45,155 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:10:45,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:10:45,155 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:10:45,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:10:45,156 INFO L85 PathProgramCache]: Analyzing trace with hash 810832890, now seen corresponding path program 1 times [2021-11-06 14:10:45,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:10:45,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381537986] [2021-11-06 14:10:45,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:10:45,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:10:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:45,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:10:45,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:10:45,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381537986] [2021-11-06 14:10:45,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381537986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:10:45,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:10:45,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:10:45,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056675931] [2021-11-06 14:10:45,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:10:45,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:10:45,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:10:45,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:10:45,534 INFO L87 Difference]: Start difference. First operand 6384 states and 8962 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:45,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:10:45,860 INFO L93 Difference]: Finished difference Result 18736 states and 26891 transitions. [2021-11-06 14:10:45,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:10:45,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-06 14:10:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:10:45,939 INFO L225 Difference]: With dead ends: 18736 [2021-11-06 14:10:45,939 INFO L226 Difference]: Without dead ends: 12559 [2021-11-06 14:10:45,976 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:10:45,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12559 states. [2021-11-06 14:10:46,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12559 to 12547. [2021-11-06 14:10:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12547 states, 12210 states have (on average 1.4042588042588042) internal successors, (17146), 12234 states have internal predecessors, (17146), 252 states have call successors, (252), 80 states have call predecessors, (252), 80 states have return successors, (504), 244 states have call predecessors, (504), 252 states have call successors, (504) [2021-11-06 14:10:46,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12547 states to 12547 states and 17902 transitions. [2021-11-06 14:10:46,320 INFO L78 Accepts]: Start accepts. Automaton has 12547 states and 17902 transitions. Word has length 126 [2021-11-06 14:10:46,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:10:46,320 INFO L470 AbstractCegarLoop]: Abstraction has 12547 states and 17902 transitions. [2021-11-06 14:10:46,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 12547 states and 17902 transitions. [2021-11-06 14:10:46,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-06 14:10:46,325 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:10:46,325 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:10:46,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:10:46,325 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:10:46,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:10:46,326 INFO L85 PathProgramCache]: Analyzing trace with hash -633975522, now seen corresponding path program 1 times [2021-11-06 14:10:46,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:10:46,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838378865] [2021-11-06 14:10:46,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:10:46,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:10:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:10:46,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:10:46,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838378865] [2021-11-06 14:10:46,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838378865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:10:46,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:10:46,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:10:46,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316778566] [2021-11-06 14:10:46,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:10:46,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:10:46,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:10:46,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:10:46,606 INFO L87 Difference]: Start difference. First operand 12547 states and 17902 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:46,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:10:46,941 INFO L93 Difference]: Finished difference Result 12547 states and 17902 transitions. [2021-11-06 14:10:46,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:10:46,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 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 127 [2021-11-06 14:10:46,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:10:47,001 INFO L225 Difference]: With dead ends: 12547 [2021-11-06 14:10:47,002 INFO L226 Difference]: Without dead ends: 12545 [2021-11-06 14:10:47,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:10:47,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12545 states. [2021-11-06 14:10:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12545 to 12545. [2021-11-06 14:10:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12545 states, 12209 states have (on average 1.404210009009747) internal successors, (17144), 12232 states have internal predecessors, (17144), 252 states have call successors, (252), 80 states have call predecessors, (252), 80 states have return successors, (504), 244 states have call predecessors, (504), 252 states have call successors, (504) [2021-11-06 14:10:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12545 states to 12545 states and 17900 transitions. [2021-11-06 14:10:47,409 INFO L78 Accepts]: Start accepts. Automaton has 12545 states and 17900 transitions. Word has length 127 [2021-11-06 14:10:47,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:10:47,410 INFO L470 AbstractCegarLoop]: Abstraction has 12545 states and 17900 transitions. [2021-11-06 14:10:47,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:47,411 INFO L276 IsEmpty]: Start isEmpty. Operand 12545 states and 17900 transitions. [2021-11-06 14:10:47,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-06 14:10:47,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:10:47,414 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:10:47,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:10:47,415 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:10:47,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:10:47,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1821603972, now seen corresponding path program 1 times [2021-11-06 14:10:47,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:10:47,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477670586] [2021-11-06 14:10:47,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:10:47,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:10:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:10:47,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:10:47,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477670586] [2021-11-06 14:10:47,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477670586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:10:47,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:10:47,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:10:47,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280178895] [2021-11-06 14:10:47,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:10:47,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:10:47,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:10:47,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:10:47,623 INFO L87 Difference]: Start difference. First operand 12545 states and 17900 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:47,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:10:47,870 INFO L93 Difference]: Finished difference Result 12545 states and 17900 transitions. [2021-11-06 14:10:47,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:10:47,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 128 [2021-11-06 14:10:47,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:10:47,909 INFO L225 Difference]: With dead ends: 12545 [2021-11-06 14:10:47,910 INFO L226 Difference]: Without dead ends: 12543 [2021-11-06 14:10:47,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:10:47,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12543 states. [2021-11-06 14:10:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12543 to 12543. [2021-11-06 14:10:48,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12543 states, 12208 states have (on average 1.4041612057667103) internal successors, (17142), 12230 states have internal predecessors, (17142), 252 states have call successors, (252), 80 states have call predecessors, (252), 80 states have return successors, (504), 244 states have call predecessors, (504), 252 states have call successors, (504) [2021-11-06 14:10:48,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12543 states to 12543 states and 17898 transitions. [2021-11-06 14:10:48,226 INFO L78 Accepts]: Start accepts. Automaton has 12543 states and 17898 transitions. Word has length 128 [2021-11-06 14:10:48,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:10:48,226 INFO L470 AbstractCegarLoop]: Abstraction has 12543 states and 17898 transitions. [2021-11-06 14:10:48,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:48,227 INFO L276 IsEmpty]: Start isEmpty. Operand 12543 states and 17898 transitions. [2021-11-06 14:10:48,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-06 14:10:48,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:10:48,231 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:10:48,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:10:48,232 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:10:48,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:10:48,232 INFO L85 PathProgramCache]: Analyzing trace with hash 635156968, now seen corresponding path program 1 times [2021-11-06 14:10:48,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:10:48,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543308335] [2021-11-06 14:10:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:10:48,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:10:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:10:48,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:10:48,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543308335] [2021-11-06 14:10:48,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543308335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:10:48,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:10:48,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:10:48,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53024890] [2021-11-06 14:10:48,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:10:48,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:10:48,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:10:48,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:10:48,428 INFO L87 Difference]: Start difference. First operand 12543 states and 17898 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:48,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:10:48,616 INFO L93 Difference]: Finished difference Result 12543 states and 17898 transitions. [2021-11-06 14:10:48,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:10:48,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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 129 [2021-11-06 14:10:48,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:10:48,662 INFO L225 Difference]: With dead ends: 12543 [2021-11-06 14:10:48,662 INFO L226 Difference]: Without dead ends: 12541 [2021-11-06 14:10:48,672 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:10:48,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12541 states. [2021-11-06 14:10:48,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12541 to 12541. [2021-11-06 14:10:48,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12541 states, 12207 states have (on average 1.40411239452773) internal successors, (17140), 12228 states have internal predecessors, (17140), 252 states have call successors, (252), 80 states have call predecessors, (252), 80 states have return successors, (504), 244 states have call predecessors, (504), 252 states have call successors, (504) [2021-11-06 14:10:48,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12541 states to 12541 states and 17896 transitions. [2021-11-06 14:10:48,986 INFO L78 Accepts]: Start accepts. Automaton has 12541 states and 17896 transitions. Word has length 129 [2021-11-06 14:10:48,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:10:48,987 INFO L470 AbstractCegarLoop]: Abstraction has 12541 states and 17896 transitions. [2021-11-06 14:10:48,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:48,987 INFO L276 IsEmpty]: Start isEmpty. Operand 12541 states and 17896 transitions. [2021-11-06 14:10:48,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-06 14:10:48,991 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:10:48,991 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:10:48,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:10:48,991 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:10:48,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:10:48,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1784961778, now seen corresponding path program 1 times [2021-11-06 14:10:48,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:10:48,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003609791] [2021-11-06 14:10:48,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:10:48,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:10:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 14:10:49,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:10:49,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003609791] [2021-11-06 14:10:49,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003609791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:10:49,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:10:49,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:10:49,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47333551] [2021-11-06 14:10:49,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:10:49,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:10:49,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:10:49,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:10:49,213 INFO L87 Difference]: Start difference. First operand 12541 states and 17896 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:49,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:10:49,385 INFO L93 Difference]: Finished difference Result 12541 states and 17896 transitions. [2021-11-06 14:10:49,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:10:49,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 130 [2021-11-06 14:10:49,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:10:49,417 INFO L225 Difference]: With dead ends: 12541 [2021-11-06 14:10:49,417 INFO L226 Difference]: Without dead ends: 12533 [2021-11-06 14:10:49,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:10:49,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12533 states. [2021-11-06 14:10:49,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12533 to 12533. [2021-11-06 14:10:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12533 states, 12200 states have (on average 1.4041803278688525) internal successors, (17131), 12220 states have internal predecessors, (17131), 252 states have call successors, (252), 80 states have call predecessors, (252), 80 states have return successors, (504), 244 states have call predecessors, (504), 252 states have call successors, (504) [2021-11-06 14:10:49,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12533 states to 12533 states and 17887 transitions. [2021-11-06 14:10:49,681 INFO L78 Accepts]: Start accepts. Automaton has 12533 states and 17887 transitions. Word has length 130 [2021-11-06 14:10:49,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:10:49,682 INFO L470 AbstractCegarLoop]: Abstraction has 12533 states and 17887 transitions. [2021-11-06 14:10:49,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:10:49,682 INFO L276 IsEmpty]: Start isEmpty. Operand 12533 states and 17887 transitions. [2021-11-06 14:10:49,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-06 14:10:49,709 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:10:49,709 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:10:49,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:10:49,709 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:10:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:10:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1503885213, now seen corresponding path program 1 times [2021-11-06 14:10:49,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:10:49,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871907251] [2021-11-06 14:10:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:10:49,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:10:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:49,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-06 14:10:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:49,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-06 14:10:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:49,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:10:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:10:50,009 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:10:50,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:10:50,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871907251] [2021-11-06 14:10:50,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871907251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:10:50,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:10:50,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:10:50,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657039] [2021-11-06 14:10:50,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:10:50,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:10:50,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:10:50,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:10:50,015 INFO L87 Difference]: Start difference. First operand 12533 states and 17887 transitions. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 4 states have internal predecessors, (210), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-06 14:11:01,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:11:01,074 INFO L93 Difference]: Finished difference Result 25515 states and 37067 transitions. [2021-11-06 14:11:01,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:11:01,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 4 states have internal predecessors, (210), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 219 [2021-11-06 14:11:01,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:11:01,124 INFO L225 Difference]: With dead ends: 25515 [2021-11-06 14:11:01,124 INFO L226 Difference]: Without dead ends: 13189 [2021-11-06 14:11:01,173 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:11:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13189 states. [2021-11-06 14:11:01,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13189 to 13125. [2021-11-06 14:11:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13125 states, 12704 states have (on average 1.34485201511335) internal successors, (17085), 12756 states have internal predecessors, (17085), 268 states have call successors, (268), 80 states have call predecessors, (268), 152 states have return successors, (716), 304 states have call predecessors, (716), 268 states have call successors, (716) [2021-11-06 14:11:01,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13125 states to 13125 states and 18069 transitions. [2021-11-06 14:11:01,514 INFO L78 Accepts]: Start accepts. Automaton has 13125 states and 18069 transitions. Word has length 219 [2021-11-06 14:11:01,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:11:01,515 INFO L470 AbstractCegarLoop]: Abstraction has 13125 states and 18069 transitions. [2021-11-06 14:11:01,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 4 states have internal predecessors, (210), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-06 14:11:01,515 INFO L276 IsEmpty]: Start isEmpty. Operand 13125 states and 18069 transitions. [2021-11-06 14:11:01,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-06 14:11:01,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:11:01,542 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:11:01,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 14:11:01,543 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:11:01,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:11:01,543 INFO L85 PathProgramCache]: Analyzing trace with hash 766242725, now seen corresponding path program 1 times [2021-11-06 14:11:01,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:11:01,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242734445] [2021-11-06 14:11:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:11:01,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:11:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:11:01,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-06 14:11:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:11:01,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-06 14:11:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:11:01,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:11:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:11:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:11:01,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:11:01,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242734445] [2021-11-06 14:11:01,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242734445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:11:01,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:11:01,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:11:01,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000415405] [2021-11-06 14:11:01,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:11:01,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:11:01,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:11:01,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:11:01,945 INFO L87 Difference]: Start difference. First operand 13125 states and 18069 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-06 14:11:09,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:11:09,788 INFO L93 Difference]: Finished difference Result 26211 states and 36849 transitions. [2021-11-06 14:11:09,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:11:09,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 219 [2021-11-06 14:11:09,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:11:09,855 INFO L225 Difference]: With dead ends: 26211 [2021-11-06 14:11:09,855 INFO L226 Difference]: Without dead ends: 13293 [2021-11-06 14:11:09,903 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:11:09,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13293 states. [2021-11-06 14:11:10,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13293 to 13129. [2021-11-06 14:11:10,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13129 states, 12708 states have (on average 1.3447434686811457) internal successors, (17089), 12760 states have internal predecessors, (17089), 268 states have call successors, (268), 80 states have call predecessors, (268), 152 states have return successors, (716), 304 states have call predecessors, (716), 268 states have call successors, (716) [2021-11-06 14:11:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13129 states to 13129 states and 18073 transitions. [2021-11-06 14:11:10,281 INFO L78 Accepts]: Start accepts. Automaton has 13129 states and 18073 transitions. Word has length 219 [2021-11-06 14:11:10,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:11:10,282 INFO L470 AbstractCegarLoop]: Abstraction has 13129 states and 18073 transitions. [2021-11-06 14:11:10,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-06 14:11:10,282 INFO L276 IsEmpty]: Start isEmpty. Operand 13129 states and 18073 transitions. [2021-11-06 14:11:10,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-06 14:11:10,316 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:11:10,317 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:11:10,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 14:11:10,317 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:11:10,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:11:10,318 INFO L85 PathProgramCache]: Analyzing trace with hash 231382310, now seen corresponding path program 1 times [2021-11-06 14:11:10,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:11:10,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659234596] [2021-11-06 14:11:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:11:10,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:11:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:11:10,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-06 14:11:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:11:10,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-06 14:11:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:11:10,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:11:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:11:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:11:10,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:11:10,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659234596] [2021-11-06 14:11:10,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659234596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:11:10,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:11:10,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:11:10,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751216084] [2021-11-06 14:11:10,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:11:10,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:11:10,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:11:10,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:11:10,853 INFO L87 Difference]: Start difference. First operand 13129 states and 18073 transitions. Second operand has 5 states, 5 states have (on average 42.4) internal successors, (212), 4 states have internal predecessors, (212), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-06 14:11:20,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:11:20,889 INFO L93 Difference]: Finished difference Result 26295 states and 36887 transitions. [2021-11-06 14:11:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 14:11:20,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 4 states have internal predecessors, (212), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 221 [2021-11-06 14:11:20,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:11:20,939 INFO L225 Difference]: With dead ends: 26295 [2021-11-06 14:11:20,940 INFO L226 Difference]: Without dead ends: 13373 [2021-11-06 14:11:20,979 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:11:20,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13373 states. [2021-11-06 14:11:21,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13373 to 13129. [2021-11-06 14:11:21,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13129 states, 12708 states have (on average 1.3444287063267233) internal successors, (17085), 12760 states have internal predecessors, (17085), 268 states have call successors, (268), 80 states have call predecessors, (268), 152 states have return successors, (716), 304 states have call predecessors, (716), 268 states have call successors, (716) [2021-11-06 14:11:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13129 states to 13129 states and 18069 transitions. [2021-11-06 14:11:21,277 INFO L78 Accepts]: Start accepts. Automaton has 13129 states and 18069 transitions. Word has length 221 [2021-11-06 14:11:21,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:11:21,278 INFO L470 AbstractCegarLoop]: Abstraction has 13129 states and 18069 transitions. [2021-11-06 14:11:21,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 4 states have internal predecessors, (212), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-06 14:11:21,279 INFO L276 IsEmpty]: Start isEmpty. Operand 13129 states and 18069 transitions. [2021-11-06 14:11:21,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-06 14:11:21,301 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:11:21,301 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:11:21,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 14:11:21,302 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:11:21,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:11:21,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1817372770, now seen corresponding path program 1 times [2021-11-06 14:11:21,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:11:21,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543325893] [2021-11-06 14:11:21,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:11:21,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:11:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:11:21,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-06 14:11:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:11:22,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-06 14:11:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:11:22,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:11:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:11:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:11:22,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:11:22,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543325893] [2021-11-06 14:11:22,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543325893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:11:22,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:11:22,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 14:11:22,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473663785] [2021-11-06 14:11:22,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 14:11:22,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:11:22,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 14:11:22,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-06 14:11:22,133 INFO L87 Difference]: Start difference. First operand 13129 states and 18069 transitions. Second operand has 15 states, 15 states have (on average 14.266666666666667) internal successors, (214), 14 states have internal predecessors, (214), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-06 14:12:18,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:12:18,474 INFO L93 Difference]: Finished difference Result 69477 states and 95981 transitions. [2021-11-06 14:12:18,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-06 14:12:18,475 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 14.266666666666667) internal successors, (214), 14 states have internal predecessors, (214), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 223 [2021-11-06 14:12:18,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:12:18,622 INFO L225 Difference]: With dead ends: 69477 [2021-11-06 14:12:18,622 INFO L226 Difference]: Without dead ends: 56555 [2021-11-06 14:12:18,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=284, Invalid=906, Unknown=0, NotChecked=0, Total=1190 [2021-11-06 14:12:18,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56555 states. [2021-11-06 14:12:19,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56555 to 14041. [2021-11-06 14:12:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14041 states, 13560 states have (on average 1.353023598820059) internal successors, (18347), 13612 states have internal predecessors, (18347), 316 states have call successors, (316), 80 states have call predecessors, (316), 164 states have return successors, (1032), 364 states have call predecessors, (1032), 316 states have call successors, (1032) [2021-11-06 14:12:19,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14041 states to 14041 states and 19695 transitions. [2021-11-06 14:12:19,632 INFO L78 Accepts]: Start accepts. Automaton has 14041 states and 19695 transitions. Word has length 223 [2021-11-06 14:12:19,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:12:19,633 INFO L470 AbstractCegarLoop]: Abstraction has 14041 states and 19695 transitions. [2021-11-06 14:12:19,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.266666666666667) internal successors, (214), 14 states have internal predecessors, (214), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-06 14:12:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 14041 states and 19695 transitions. [2021-11-06 14:12:19,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-06 14:12:19,656 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:12:19,656 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:12:19,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 14:12:19,657 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:12:19,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:12:19,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1092906886, now seen corresponding path program 1 times [2021-11-06 14:12:19,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:12:19,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145894914] [2021-11-06 14:12:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:12:19,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:12:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:19,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-06 14:12:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:19,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 14:12:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:19,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-06 14:12:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:19,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:12:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 14:12:19,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:12:19,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145894914] [2021-11-06 14:12:19,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145894914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:12:19,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:12:19,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:12:19,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242787682] [2021-11-06 14:12:19,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:12:19,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:12:19,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:12:19,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:12:19,938 INFO L87 Difference]: Start difference. First operand 14041 states and 19695 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 14:12:30,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:12:30,431 INFO L93 Difference]: Finished difference Result 28452 states and 40029 transitions. [2021-11-06 14:12:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:12:30,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 234 [2021-11-06 14:12:30,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:12:30,503 INFO L225 Difference]: With dead ends: 28452 [2021-11-06 14:12:30,503 INFO L226 Difference]: Without dead ends: 14615 [2021-11-06 14:12:30,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:12:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14615 states. [2021-11-06 14:12:30,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14615 to 14043. [2021-11-06 14:12:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14043 states, 13562 states have (on average 1.352971538121221) internal successors, (18349), 13614 states have internal predecessors, (18349), 316 states have call successors, (316), 80 states have call predecessors, (316), 164 states have return successors, (1032), 364 states have call predecessors, (1032), 316 states have call successors, (1032) [2021-11-06 14:12:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14043 states to 14043 states and 19697 transitions. [2021-11-06 14:12:31,048 INFO L78 Accepts]: Start accepts. Automaton has 14043 states and 19697 transitions. Word has length 234 [2021-11-06 14:12:31,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:12:31,048 INFO L470 AbstractCegarLoop]: Abstraction has 14043 states and 19697 transitions. [2021-11-06 14:12:31,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 3 states have internal predecessors, (218), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 14:12:31,049 INFO L276 IsEmpty]: Start isEmpty. Operand 14043 states and 19697 transitions. [2021-11-06 14:12:31,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-06 14:12:31,070 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:12:31,070 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:12:31,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 14:12:31,071 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:12:31,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:12:31,071 INFO L85 PathProgramCache]: Analyzing trace with hash -112933994, now seen corresponding path program 1 times [2021-11-06 14:12:31,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:12:31,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261944180] [2021-11-06 14:12:31,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:12:31,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:12:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:31,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-06 14:12:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:31,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 14:12:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:31,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-06 14:12:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:12:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-06 14:12:31,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:12:31,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261944180] [2021-11-06 14:12:31,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261944180] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:12:31,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499368528] [2021-11-06 14:12:31,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:12:31,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:12:31,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:12:31,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:12:31,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 14:12:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:41,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 3837 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-06 14:12:41,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:12:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-06 14:12:41,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499368528] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:12:41,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:12:41,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-11-06 14:12:41,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107400556] [2021-11-06 14:12:41,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:12:41,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:12:41,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:12:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:12:41,865 INFO L87 Difference]: Start difference. First operand 14043 states and 19697 transitions. Second operand has 6 states, 6 states have (on average 46.333333333333336) internal successors, (278), 5 states have internal predecessors, (278), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-06 14:12:51,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:12:51,598 INFO L93 Difference]: Finished difference Result 28455 states and 40032 transitions. [2021-11-06 14:12:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:12:51,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 46.333333333333336) internal successors, (278), 5 states have internal predecessors, (278), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 236 [2021-11-06 14:12:51,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:12:51,648 INFO L225 Difference]: With dead ends: 28455 [2021-11-06 14:12:51,648 INFO L226 Difference]: Without dead ends: 14617 [2021-11-06 14:12:51,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:12:51,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14617 states. [2021-11-06 14:12:52,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14617 to 14045. [2021-11-06 14:12:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14045 states, 13564 states have (on average 1.3529194927749926) internal successors, (18351), 13616 states have internal predecessors, (18351), 316 states have call successors, (316), 80 states have call predecessors, (316), 164 states have return successors, (1032), 364 states have call predecessors, (1032), 316 states have call successors, (1032) [2021-11-06 14:12:52,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14045 states to 14045 states and 19699 transitions. [2021-11-06 14:12:52,318 INFO L78 Accepts]: Start accepts. Automaton has 14045 states and 19699 transitions. Word has length 236 [2021-11-06 14:12:52,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:12:52,319 INFO L470 AbstractCegarLoop]: Abstraction has 14045 states and 19699 transitions. [2021-11-06 14:12:52,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.333333333333336) internal successors, (278), 5 states have internal predecessors, (278), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-06 14:12:52,319 INFO L276 IsEmpty]: Start isEmpty. Operand 14045 states and 19699 transitions. [2021-11-06 14:12:52,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-06 14:12:52,392 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:12:52,393 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:12:52,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 14:12:52,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-06 14:12:52,616 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:12:52,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:12:52,616 INFO L85 PathProgramCache]: Analyzing trace with hash 298889016, now seen corresponding path program 1 times [2021-11-06 14:12:52,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:12:52,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717834796] [2021-11-06 14:12:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:12:52,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:12:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:52,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-06 14:12:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:52,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 14:12:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:52,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-06 14:12:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:53,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:12:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:12:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-06 14:12:53,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:12:53,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717834796] [2021-11-06 14:12:53,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717834796] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:12:53,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818246187] [2021-11-06 14:12:53,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:12:53,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:12:53,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:12:53,025 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:12:53,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 14:13:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:13:05,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 3854 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 14:13:05,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:13:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-06 14:13:06,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818246187] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:13:06,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:13:06,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-11-06 14:13:06,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431339819] [2021-11-06 14:13:06,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 14:13:06,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:13:06,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 14:13:06,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:13:06,129 INFO L87 Difference]: Start difference. First operand 14045 states and 19699 transitions. Second operand has 7 states, 7 states have (on average 40.57142857142857) internal successors, (284), 6 states have internal predecessors, (284), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-06 14:13:15,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:13:15,978 INFO L93 Difference]: Finished difference Result 28458 states and 40035 transitions. [2021-11-06 14:13:15,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 14:13:15,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 40.57142857142857) internal successors, (284), 6 states have internal predecessors, (284), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 238 [2021-11-06 14:13:15,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:13:16,025 INFO L225 Difference]: With dead ends: 28458 [2021-11-06 14:13:16,026 INFO L226 Difference]: Without dead ends: 14619 [2021-11-06 14:13:16,052 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:13:16,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14619 states. [2021-11-06 14:13:16,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14619 to 14047. [2021-11-06 14:13:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14047 states, 13566 states have (on average 1.3528674627745836) internal successors, (18353), 13618 states have internal predecessors, (18353), 316 states have call successors, (316), 80 states have call predecessors, (316), 164 states have return successors, (1032), 364 states have call predecessors, (1032), 316 states have call successors, (1032) [2021-11-06 14:13:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14047 states to 14047 states and 19701 transitions. [2021-11-06 14:13:16,556 INFO L78 Accepts]: Start accepts. Automaton has 14047 states and 19701 transitions. Word has length 238 [2021-11-06 14:13:16,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:13:16,556 INFO L470 AbstractCegarLoop]: Abstraction has 14047 states and 19701 transitions. [2021-11-06 14:13:16,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.57142857142857) internal successors, (284), 6 states have internal predecessors, (284), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-06 14:13:16,557 INFO L276 IsEmpty]: Start isEmpty. Operand 14047 states and 19701 transitions. [2021-11-06 14:13:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-06 14:13:16,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:13:16,579 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:13:16,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-06 14:13:16,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-06 14:13:16,794 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:13:16,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:13:16,795 INFO L85 PathProgramCache]: Analyzing trace with hash 956981572, now seen corresponding path program 1 times [2021-11-06 14:13:16,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:13:16,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405524006] [2021-11-06 14:13:16,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:13:16,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:13:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:13:17,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-06 14:13:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:13:17,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-06 14:13:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:13:17,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:13:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:13:17,103 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-06 14:13:17,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:13:17,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405524006] [2021-11-06 14:13:17,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405524006] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:13:17,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216008747] [2021-11-06 14:13:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:13:17,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:13:17,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:13:17,105 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:13:17,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 14:13:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:13:24,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 3782 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-06 14:13:24,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:13:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-06 14:13:25,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216008747] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:13:25,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:13:25,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-11-06 14:13:25,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961038364] [2021-11-06 14:13:25,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 14:13:25,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:13:25,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 14:13:25,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-06 14:13:25,293 INFO L87 Difference]: Start difference. First operand 14047 states and 19701 transitions. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 9 states have internal predecessors, (264), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-06 14:13:34,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:13:34,756 INFO L93 Difference]: Finished difference Result 28461 states and 40038 transitions. [2021-11-06 14:13:34,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 14:13:34,757 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 9 states have internal predecessors, (264), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 229 [2021-11-06 14:13:34,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:13:34,799 INFO L225 Difference]: With dead ends: 28461 [2021-11-06 14:13:34,799 INFO L226 Difference]: Without dead ends: 14621 [2021-11-06 14:13:34,829 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-06 14:13:34,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14621 states. [2021-11-06 14:13:35,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14621 to 14049. [2021-11-06 14:13:35,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14049 states, 13568 states have (on average 1.3528154481132075) internal successors, (18355), 13620 states have internal predecessors, (18355), 316 states have call successors, (316), 80 states have call predecessors, (316), 164 states have return successors, (1032), 364 states have call predecessors, (1032), 316 states have call successors, (1032) [2021-11-06 14:13:35,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14049 states to 14049 states and 19703 transitions. [2021-11-06 14:13:35,322 INFO L78 Accepts]: Start accepts. Automaton has 14049 states and 19703 transitions. Word has length 229 [2021-11-06 14:13:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:13:35,322 INFO L470 AbstractCegarLoop]: Abstraction has 14049 states and 19703 transitions. [2021-11-06 14:13:35,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 9 states have internal predecessors, (264), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-06 14:13:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 14049 states and 19703 transitions. [2021-11-06 14:13:35,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-06 14:13:35,342 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:13:35,343 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:13:35,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-06 14:13:35,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:13:35,545 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:13:35,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:13:35,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1604472582, now seen corresponding path program 2 times [2021-11-06 14:13:35,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:13:35,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64853935] [2021-11-06 14:13:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:13:35,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:13:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:13:35,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-06 14:13:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:13:35,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 14:13:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:13:35,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-06 14:13:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:13:35,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:13:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:13:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 14:13:36,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:13:36,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64853935] [2021-11-06 14:13:36,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64853935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:13:36,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:13:36,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 14:13:36,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871556172] [2021-11-06 14:13:36,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 14:13:36,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:13:36,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 14:13:36,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-06 14:13:36,100 INFO L87 Difference]: Start difference. First operand 14049 states and 19703 transitions. Second operand has 10 states, 10 states have (on average 22.5) internal successors, (225), 9 states have internal predecessors, (225), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-06 14:13:56,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:13:56,944 INFO L93 Difference]: Finished difference Result 35906 states and 52382 transitions. [2021-11-06 14:13:56,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-06 14:13:56,946 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.5) internal successors, (225), 9 states have internal predecessors, (225), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 242 [2021-11-06 14:13:56,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:13:57,165 INFO L225 Difference]: With dead ends: 35906 [2021-11-06 14:13:57,165 INFO L226 Difference]: Without dead ends: 22072 [2021-11-06 14:13:57,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=280, Invalid=980, Unknown=0, NotChecked=0, Total=1260 [2021-11-06 14:13:57,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22072 states. [2021-11-06 14:13:57,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22072 to 20970. [2021-11-06 14:13:57,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20970 states, 20247 states have (on average 1.3536326369338667) internal successors, (27407), 20323 states have internal predecessors, (27407), 472 states have call successors, (472), 120 states have call predecessors, (472), 250 states have return successors, (2076), 550 states have call predecessors, (2076), 472 states have call successors, (2076) [2021-11-06 14:13:57,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20970 states to 20970 states and 29955 transitions. [2021-11-06 14:13:57,975 INFO L78 Accepts]: Start accepts. Automaton has 20970 states and 29955 transitions. Word has length 242 [2021-11-06 14:13:57,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:13:57,976 INFO L470 AbstractCegarLoop]: Abstraction has 20970 states and 29955 transitions. [2021-11-06 14:13:57,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.5) internal successors, (225), 9 states have internal predecessors, (225), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-06 14:13:57,976 INFO L276 IsEmpty]: Start isEmpty. Operand 20970 states and 29955 transitions. [2021-11-06 14:13:58,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-06 14:13:58,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:13:58,002 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:13:58,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 14:13:58,003 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:13:58,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:13:58,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1218517416, now seen corresponding path program 1 times [2021-11-06 14:13:58,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:13:58,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404652051] [2021-11-06 14:13:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:13:58,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:13:58,068 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 14:13:58,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923448401] [2021-11-06 14:13:58,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:13:58,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:13:58,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:13:58,069 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:13:58,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 14:13:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:13:59,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 4053 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 14:13:59,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:13:59,630 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 14:13:59,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:13:59,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404652051] [2021-11-06 14:13:59,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 14:13:59,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923448401] [2021-11-06 14:13:59,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923448401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:13:59,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:13:59,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:13:59,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686844681] [2021-11-06 14:13:59,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:13:59,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:13:59,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:13:59,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:13:59,631 INFO L87 Difference]: Start difference. First operand 20970 states and 29955 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-06 14:14:00,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:14:00,960 INFO L93 Difference]: Finished difference Result 54824 states and 77433 transitions. [2021-11-06 14:14:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:14:00,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 256 [2021-11-06 14:14:00,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:14:01,140 INFO L225 Difference]: With dead ends: 54824 [2021-11-06 14:14:01,140 INFO L226 Difference]: Without dead ends: 34069 [2021-11-06 14:14:01,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:14:01,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34069 states. [2021-11-06 14:14:02,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34069 to 22536. [2021-11-06 14:14:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22536 states, 21813 states have (on average 1.350524916334296) internal successors, (29459), 21889 states have internal predecessors, (29459), 472 states have call successors, (472), 120 states have call predecessors, (472), 250 states have return successors, (2076), 550 states have call predecessors, (2076), 472 states have call successors, (2076) [2021-11-06 14:14:02,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22536 states to 22536 states and 32007 transitions. [2021-11-06 14:14:02,249 INFO L78 Accepts]: Start accepts. Automaton has 22536 states and 32007 transitions. Word has length 256 [2021-11-06 14:14:02,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:14:02,250 INFO L470 AbstractCegarLoop]: Abstraction has 22536 states and 32007 transitions. [2021-11-06 14:14:02,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-06 14:14:02,250 INFO L276 IsEmpty]: Start isEmpty. Operand 22536 states and 32007 transitions. [2021-11-06 14:14:02,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-06 14:14:02,277 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:14:02,277 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:14:02,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 14:14:02,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-06 14:14:02,494 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:14:02,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:14:02,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2066685334, now seen corresponding path program 1 times [2021-11-06 14:14:02,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:14:02,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149458580] [2021-11-06 14:14:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:14:02,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:14:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:02,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-06 14:14:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:02,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-06 14:14:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:02,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-06 14:14:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:02,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:14:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 14:14:02,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:14:02,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149458580] [2021-11-06 14:14:02,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149458580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:14:02,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:14:02,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:14:02,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737223210] [2021-11-06 14:14:02,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:14:02,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:14:02,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:14:02,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:14:02,741 INFO L87 Difference]: Start difference. First operand 22536 states and 32007 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 14:14:11,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:14:11,532 INFO L93 Difference]: Finished difference Result 45781 states and 67315 transitions. [2021-11-06 14:14:11,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:14:11,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 259 [2021-11-06 14:14:11,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:14:11,609 INFO L225 Difference]: With dead ends: 45781 [2021-11-06 14:14:11,610 INFO L226 Difference]: Without dead ends: 23460 [2021-11-06 14:14:11,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:14:11,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23460 states. [2021-11-06 14:14:12,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23460 to 22542. [2021-11-06 14:14:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22542 states, 21819 states have (on average 1.3504285255969568) internal successors, (29465), 21895 states have internal predecessors, (29465), 472 states have call successors, (472), 120 states have call predecessors, (472), 250 states have return successors, (2076), 550 states have call predecessors, (2076), 472 states have call successors, (2076) [2021-11-06 14:14:12,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22542 states to 22542 states and 32013 transitions. [2021-11-06 14:14:12,754 INFO L78 Accepts]: Start accepts. Automaton has 22542 states and 32013 transitions. Word has length 259 [2021-11-06 14:14:12,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:14:12,755 INFO L470 AbstractCegarLoop]: Abstraction has 22542 states and 32013 transitions. [2021-11-06 14:14:12,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 14:14:12,755 INFO L276 IsEmpty]: Start isEmpty. Operand 22542 states and 32013 transitions. [2021-11-06 14:14:12,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-06 14:14:12,783 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:14:12,783 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:14:12,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 14:14:12,784 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:14:12,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:14:12,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1233588264, now seen corresponding path program 1 times [2021-11-06 14:14:12,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:14:12,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290152408] [2021-11-06 14:14:12,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:14:12,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:14:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:12,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-06 14:14:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-06 14:14:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:13,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-06 14:14:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:13,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:14:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 14:14:13,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:14:13,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290152408] [2021-11-06 14:14:13,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290152408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:14:13,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:14:13,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:14:13,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840930954] [2021-11-06 14:14:13,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:14:13,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:14:13,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:14:13,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:14:13,144 INFO L87 Difference]: Start difference. First operand 22542 states and 32013 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 14:14:21,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:14:21,976 INFO L93 Difference]: Finished difference Result 46657 states and 68611 transitions. [2021-11-06 14:14:21,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:14:21,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 259 [2021-11-06 14:14:21,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:14:22,085 INFO L225 Difference]: With dead ends: 46657 [2021-11-06 14:14:22,086 INFO L226 Difference]: Without dead ends: 24330 [2021-11-06 14:14:22,184 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:14:22,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24330 states. [2021-11-06 14:14:23,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24330 to 22554. [2021-11-06 14:14:23,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22554 states, 21831 states have (on average 1.3502359030736109) internal successors, (29477), 21907 states have internal predecessors, (29477), 472 states have call successors, (472), 120 states have call predecessors, (472), 250 states have return successors, (2076), 550 states have call predecessors, (2076), 472 states have call successors, (2076) [2021-11-06 14:14:23,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22554 states to 22554 states and 32025 transitions. [2021-11-06 14:14:23,210 INFO L78 Accepts]: Start accepts. Automaton has 22554 states and 32025 transitions. Word has length 259 [2021-11-06 14:14:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:14:23,210 INFO L470 AbstractCegarLoop]: Abstraction has 22554 states and 32025 transitions. [2021-11-06 14:14:23,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-06 14:14:23,210 INFO L276 IsEmpty]: Start isEmpty. Operand 22554 states and 32025 transitions. [2021-11-06 14:14:23,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-06 14:14:23,235 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:14:23,235 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:14:23,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 14:14:23,235 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:14:23,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:14:23,236 INFO L85 PathProgramCache]: Analyzing trace with hash 435435087, now seen corresponding path program 1 times [2021-11-06 14:14:23,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:14:23,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955527439] [2021-11-06 14:14:23,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:14:23,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:14:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:23,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-06 14:14:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:23,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-06 14:14:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:23,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:14:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 14:14:24,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:14:24,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955527439] [2021-11-06 14:14:24,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955527439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:14:24,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:14:24,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 14:14:24,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609992299] [2021-11-06 14:14:24,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 14:14:24,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:14:24,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 14:14:24,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-06 14:14:24,205 INFO L87 Difference]: Start difference. First operand 22554 states and 32025 transitions. Second operand has 12 states, 12 states have (on average 18.5) internal successors, (222), 11 states have internal predecessors, (222), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-06 14:14:51,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:14:51,788 INFO L93 Difference]: Finished difference Result 53688 states and 79512 transitions. [2021-11-06 14:14:51,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-06 14:14:51,788 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.5) internal successors, (222), 11 states have internal predecessors, (222), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 237 [2021-11-06 14:14:51,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:14:51,904 INFO L225 Difference]: With dead ends: 53688 [2021-11-06 14:14:51,905 INFO L226 Difference]: Without dead ends: 31323 [2021-11-06 14:14:52,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=639, Invalid=2331, Unknown=0, NotChecked=0, Total=2970 [2021-11-06 14:14:52,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31323 states. [2021-11-06 14:14:53,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31323 to 29909. [2021-11-06 14:14:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29909 states, 28958 states have (on average 1.3503004351129222) internal successors, (39102), 29054 states have internal predecessors, (39102), 620 states have call successors, (620), 156 states have call predecessors, (620), 330 states have return successors, (3374), 730 states have call predecessors, (3374), 620 states have call successors, (3374) [2021-11-06 14:14:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29909 states to 29909 states and 43096 transitions. [2021-11-06 14:14:53,513 INFO L78 Accepts]: Start accepts. Automaton has 29909 states and 43096 transitions. Word has length 237 [2021-11-06 14:14:53,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:14:53,515 INFO L470 AbstractCegarLoop]: Abstraction has 29909 states and 43096 transitions. [2021-11-06 14:14:53,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.5) internal successors, (222), 11 states have internal predecessors, (222), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-06 14:14:53,515 INFO L276 IsEmpty]: Start isEmpty. Operand 29909 states and 43096 transitions. [2021-11-06 14:14:53,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-06 14:14:53,553 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:14:53,553 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:14:53,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 14:14:53,554 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:14:53,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:14:53,559 INFO L85 PathProgramCache]: Analyzing trace with hash -627349177, now seen corresponding path program 1 times [2021-11-06 14:14:53,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:14:53,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171608110] [2021-11-06 14:14:53,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:14:53,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:14:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:53,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-06 14:14:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:54,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-06 14:14:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:54,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-06 14:14:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:14:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:54,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-06 14:14:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:54,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 14:14:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:14:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 14:14:54,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:14:54,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171608110] [2021-11-06 14:14:54,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171608110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:14:54,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:14:54,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 14:14:54,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842635473] [2021-11-06 14:14:54,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 14:14:54,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:14:54,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 14:14:54,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-06 14:14:54,182 INFO L87 Difference]: Start difference. First operand 29909 states and 43096 transitions. Second operand has 10 states, 10 states have (on average 25.8) internal successors, (258), 7 states have internal predecessors, (258), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-06 14:15:06,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:15:06,232 INFO L93 Difference]: Finished difference Result 60853 states and 90699 transitions. [2021-11-06 14:15:06,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 14:15:06,232 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 25.8) internal successors, (258), 7 states have internal predecessors, (258), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 279 [2021-11-06 14:15:06,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:15:06,346 INFO L225 Difference]: With dead ends: 60853 [2021-11-06 14:15:06,346 INFO L226 Difference]: Without dead ends: 31159 [2021-11-06 14:15:06,479 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-06 14:15:06,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31159 states. [2021-11-06 14:15:07,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31159 to 29941. [2021-11-06 14:15:07,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29941 states, 28982 states have (on average 1.3500103512525015) internal successors, (39126), 29078 states have internal predecessors, (39126), 620 states have call successors, (620), 156 states have call predecessors, (620), 338 states have return successors, (3398), 738 states have call predecessors, (3398), 620 states have call successors, (3398) [2021-11-06 14:15:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29941 states to 29941 states and 43144 transitions. [2021-11-06 14:15:07,884 INFO L78 Accepts]: Start accepts. Automaton has 29941 states and 43144 transitions. Word has length 279 [2021-11-06 14:15:07,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:15:07,885 INFO L470 AbstractCegarLoop]: Abstraction has 29941 states and 43144 transitions. [2021-11-06 14:15:07,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.8) internal successors, (258), 7 states have internal predecessors, (258), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-06 14:15:07,885 INFO L276 IsEmpty]: Start isEmpty. Operand 29941 states and 43144 transitions. [2021-11-06 14:15:07,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-06 14:15:07,924 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:15:07,924 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:15:07,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 14:15:07,924 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:15:07,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:15:07,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1272187478, now seen corresponding path program 1 times [2021-11-06 14:15:07,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:15:07,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448020997] [2021-11-06 14:15:07,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:15:07,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:15:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:08,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-06 14:15:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:08,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-06 14:15:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:08,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-06 14:15:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:08,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:15:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:08,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-06 14:15:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:08,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 14:15:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 14:15:08,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:15:08,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448020997] [2021-11-06 14:15:08,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448020997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:15:08,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:15:08,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 14:15:08,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042478261] [2021-11-06 14:15:08,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:15:08,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:15:08,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:15:08,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:15:08,383 INFO L87 Difference]: Start difference. First operand 29941 states and 43144 transitions. Second operand has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-06 14:15:17,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:15:17,660 INFO L93 Difference]: Finished difference Result 60885 states and 90707 transitions. [2021-11-06 14:15:17,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 14:15:17,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 280 [2021-11-06 14:15:17,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:15:17,767 INFO L225 Difference]: With dead ends: 60885 [2021-11-06 14:15:17,767 INFO L226 Difference]: Without dead ends: 31159 [2021-11-06 14:15:17,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-06 14:15:17,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31159 states. [2021-11-06 14:15:19,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31159 to 29953. [2021-11-06 14:15:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29953 states, 28994 states have (on average 1.3497965096226805) internal successors, (39136), 29090 states have internal predecessors, (39136), 620 states have call successors, (620), 156 states have call predecessors, (620), 338 states have return successors, (3398), 738 states have call predecessors, (3398), 620 states have call successors, (3398) [2021-11-06 14:15:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29953 states to 29953 states and 43154 transitions. [2021-11-06 14:15:19,478 INFO L78 Accepts]: Start accepts. Automaton has 29953 states and 43154 transitions. Word has length 280 [2021-11-06 14:15:19,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:15:19,478 INFO L470 AbstractCegarLoop]: Abstraction has 29953 states and 43154 transitions. [2021-11-06 14:15:19,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.166666666666664) internal successors, (259), 5 states have internal predecessors, (259), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-06 14:15:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 29953 states and 43154 transitions. [2021-11-06 14:15:19,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-06 14:15:19,523 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:15:19,523 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:15:19,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 14:15:19,524 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:15:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:15:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash 841968210, now seen corresponding path program 1 times [2021-11-06 14:15:19,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:15:19,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647230263] [2021-11-06 14:15:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:15:19,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:15:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:20,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-06 14:15:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:20,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-06 14:15:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:20,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-06 14:15:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:15:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:20,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-06 14:15:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:20,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 14:15:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 14:15:21,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:15:21,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647230263] [2021-11-06 14:15:21,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647230263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:15:21,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:15:21,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 14:15:21,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634528247] [2021-11-06 14:15:21,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 14:15:21,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:15:21,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 14:15:21,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-06 14:15:21,040 INFO L87 Difference]: Start difference. First operand 29953 states and 43154 transitions. Second operand has 14 states, 13 states have (on average 20.076923076923077) internal successors, (261), 13 states have internal predecessors, (261), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-06 14:15:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:15:48,100 INFO L93 Difference]: Finished difference Result 61009 states and 90992 transitions. [2021-11-06 14:15:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-06 14:15:48,101 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 20.076923076923077) internal successors, (261), 13 states have internal predecessors, (261), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 282 [2021-11-06 14:15:48,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:15:48,233 INFO L225 Difference]: With dead ends: 61009 [2021-11-06 14:15:48,234 INFO L226 Difference]: Without dead ends: 31265 [2021-11-06 14:15:48,377 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=332, Invalid=1924, Unknown=0, NotChecked=0, Total=2256 [2021-11-06 14:15:48,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31265 states. [2021-11-06 14:15:49,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31265 to 29959. [2021-11-06 14:15:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29959 states, 28998 states have (on average 1.3497482585005862) internal successors, (39140), 29096 states have internal predecessors, (39140), 620 states have call successors, (620), 156 states have call predecessors, (620), 340 states have return successors, (3406), 738 states have call predecessors, (3406), 620 states have call successors, (3406) [2021-11-06 14:15:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29959 states to 29959 states and 43166 transitions. [2021-11-06 14:15:49,939 INFO L78 Accepts]: Start accepts. Automaton has 29959 states and 43166 transitions. Word has length 282 [2021-11-06 14:15:49,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:15:49,940 INFO L470 AbstractCegarLoop]: Abstraction has 29959 states and 43166 transitions. [2021-11-06 14:15:49,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 20.076923076923077) internal successors, (261), 13 states have internal predecessors, (261), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-06 14:15:49,940 INFO L276 IsEmpty]: Start isEmpty. Operand 29959 states and 43166 transitions. [2021-11-06 14:15:49,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-06 14:15:49,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:15:49,977 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:15:49,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 14:15:49,978 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:15:49,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:15:49,979 INFO L85 PathProgramCache]: Analyzing trace with hash -10143716, now seen corresponding path program 1 times [2021-11-06 14:15:49,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:15:49,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602560269] [2021-11-06 14:15:49,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:15:49,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:15:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:50,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-06 14:15:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:50,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-06 14:15:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:50,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-06 14:15:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:50,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:15:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:50,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-06 14:15:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:50,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 14:15:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:15:50,475 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 14:15:50,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:15:50,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602560269] [2021-11-06 14:15:50,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602560269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:15:50,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:15:50,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 14:15:50,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009814473] [2021-11-06 14:15:50,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-06 14:15:50,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:15:50,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-06 14:15:50,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:15:50,477 INFO L87 Difference]: Start difference. First operand 29959 states and 43166 transitions. Second operand has 9 states, 9 states have (on average 29.22222222222222) internal successors, (263), 7 states have internal predecessors, (263), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-06 14:16:35,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:16:35,295 INFO L93 Difference]: Finished difference Result 171238 states and 318781 transitions. [2021-11-06 14:16:35,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 14:16:35,295 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 29.22222222222222) internal successors, (263), 7 states have internal predecessors, (263), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 284 [2021-11-06 14:16:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:16:37,258 INFO L225 Difference]: With dead ends: 171238 [2021-11-06 14:16:37,258 INFO L226 Difference]: Without dead ends: 141488 [2021-11-06 14:16:37,719 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-11-06 14:16:37,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141488 states. [2021-11-06 14:16:43,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141488 to 71506. [2021-11-06 14:16:43,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71506 states, 68065 states have (on average 1.3460368765150958) internal successors, (91618), 68307 states have internal predecessors, (91618), 1748 states have call successors, (1748), 432 states have call predecessors, (1748), 1692 states have return successors, (32072), 2854 states have call predecessors, (32072), 1748 states have call successors, (32072) [2021-11-06 14:16:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71506 states to 71506 states and 125438 transitions. [2021-11-06 14:16:44,563 INFO L78 Accepts]: Start accepts. Automaton has 71506 states and 125438 transitions. Word has length 284 [2021-11-06 14:16:44,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:16:44,564 INFO L470 AbstractCegarLoop]: Abstraction has 71506 states and 125438 transitions. [2021-11-06 14:16:44,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.22222222222222) internal successors, (263), 7 states have internal predecessors, (263), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-06 14:16:44,564 INFO L276 IsEmpty]: Start isEmpty. Operand 71506 states and 125438 transitions. [2021-11-06 14:16:44,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-06 14:16:44,874 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:16:44,874 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:16:44,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 14:16:44,876 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:16:44,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:16:44,876 INFO L85 PathProgramCache]: Analyzing trace with hash 883342622, now seen corresponding path program 1 times [2021-11-06 14:16:44,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:16:44,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741789818] [2021-11-06 14:16:44,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:16:44,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:16:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:16:45,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-06 14:16:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:16:45,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-06 14:16:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:16:45,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-06 14:16:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:16:45,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-06 14:16:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:16:46,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-06 14:16:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:16:46,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 14:16:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:16:46,240 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 14:16:46,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:16:46,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741789818] [2021-11-06 14:16:46,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741789818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:16:46,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:16:46,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 14:16:46,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266839868] [2021-11-06 14:16:46,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 14:16:46,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:16:46,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 14:16:46,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-06 14:16:46,242 INFO L87 Difference]: Start difference. First operand 71506 states and 125438 transitions. Second operand has 11 states, 11 states have (on average 23.90909090909091) internal successors, (263), 10 states have internal predecessors, (263), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-06 14:17:14,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:17:14,108 INFO L93 Difference]: Finished difference Result 145563 states and 285128 transitions. [2021-11-06 14:17:14,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-06 14:17:14,109 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.90909090909091) internal successors, (263), 10 states have internal predecessors, (263), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 284 [2021-11-06 14:17:14,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:17:14,879 INFO L225 Difference]: With dead ends: 145563 [2021-11-06 14:17:14,880 INFO L226 Difference]: Without dead ends: 74272 [2021-11-06 14:17:15,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=285, Invalid=975, Unknown=0, NotChecked=0, Total=1260 [2021-11-06 14:17:15,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74272 states. [2021-11-06 14:17:20,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74272 to 71366. [2021-11-06 14:17:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71366 states, 67949 states have (on average 1.3463038455312073) internal successors, (91480), 68189 states have internal predecessors, (91480), 1740 states have call successors, (1740), 430 states have call predecessors, (1740), 1676 states have return successors, (31172), 2834 states have call predecessors, (31172), 1740 states have call successors, (31172) [2021-11-06 14:17:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71366 states to 71366 states and 124392 transitions. [2021-11-06 14:17:20,961 INFO L78 Accepts]: Start accepts. Automaton has 71366 states and 124392 transitions. Word has length 284 [2021-11-06 14:17:20,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:17:20,962 INFO L470 AbstractCegarLoop]: Abstraction has 71366 states and 124392 transitions. [2021-11-06 14:17:20,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.90909090909091) internal successors, (263), 10 states have internal predecessors, (263), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-06 14:17:20,962 INFO L276 IsEmpty]: Start isEmpty. Operand 71366 states and 124392 transitions. [2021-11-06 14:17:21,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-06 14:17:21,039 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:21,039 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:17:21,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-06 14:17:21,039 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:21,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:21,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1155783433, now seen corresponding path program 1 times [2021-11-06 14:17:21,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:21,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850915803] [2021-11-06 14:17:21,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:21,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:21,103 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 14:17:21,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603592169] [2021-11-06 14:17:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:21,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:17:21,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:17:21,111 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:17:21,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 14:17:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:22,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 4534 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 14:17:22,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:17:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-06 14:17:23,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:23,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850915803] [2021-11-06 14:17:23,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 14:17:23,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603592169] [2021-11-06 14:17:23,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603592169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:23,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:17:23,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:17:23,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959301139] [2021-11-06 14:17:23,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:17:23,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:23,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:17:23,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:17:23,161 INFO L87 Difference]: Start difference. First operand 71366 states and 124392 transitions. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)