./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 fcb8e130 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-fcb8e13 [2021-11-22 22:51:17,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 22:51:17,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 22:51:17,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 22:51:17,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 22:51:17,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 22:51:17,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 22:51:17,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 22:51:17,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 22:51:17,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 22:51:17,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 22:51:17,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 22:51:17,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 22:51:17,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 22:51:17,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 22:51:17,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 22:51:17,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 22:51:17,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 22:51:17,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 22:51:17,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 22:51:17,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 22:51:17,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 22:51:17,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 22:51:17,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 22:51:17,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 22:51:17,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 22:51:17,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 22:51:17,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 22:51:17,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 22:51:17,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 22:51:17,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 22:51:17,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 22:51:17,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 22:51:17,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 22:51:17,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 22:51:17,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 22:51:17,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 22:51:17,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 22:51:17,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 22:51:17,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 22:51:17,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 22:51:17,341 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 22:51:17,370 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 22:51:17,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 22:51:17,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 22:51:17,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 22:51:17,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 22:51:17,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 22:51:17,372 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 22:51:17,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 22:51:17,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 22:51:17,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 22:51:17,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 22:51:17,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 22:51:17,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 22:51:17,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 22:51:17,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 22:51:17,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 22:51:17,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 22:51:17,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 22:51:17,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 22:51:17,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 22:51:17,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 22:51:17,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 22:51:17,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 22:51:17,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 22:51:17,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 22:51:17,378 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 22:51:17,378 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 22:51:17,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 22:51:17,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 22:51:17,379 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 161acb090810893f5857465330b1e9af98cd436d8b1ab4337fc3709fda2d3260 [2021-11-22 22:51:17,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 22:51:17,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 22:51:17,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 22:51:17,656 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 22:51:17,657 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 22:51:17,658 INFO L432 ainManager$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 [2021-11-22 22:51:17,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d689bc6e/d17415867409483099d975b63ac586c3/FLAG5b19765e4 [2021-11-22 22:51:18,490 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 22:51:18,491 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 [2021-11-22 22:51:18,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d689bc6e/d17415867409483099d975b63ac586c3/FLAG5b19765e4 [2021-11-22 22:51:18,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d689bc6e/d17415867409483099d975b63ac586c3 [2021-11-22 22:51:18,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 22:51:18,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 22:51:18,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 22:51:18,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 22:51:18,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 22:51:18,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:51:18" (1/1) ... [2021-11-22 22:51:18,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e112d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:51:18, skipping insertion in model container [2021-11-22 22:51:18,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:51:18" (1/1) ... [2021-11-22 22:51:18,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 22:51:18,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 22:51:19,262 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2021-11-22 22:51:19,765 WARN L230 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] [2021-11-22 22:51:20,662 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-22 22:51:20,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 22:51:20,747 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 22:51:20,850 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2021-11-22 22:51:20,871 WARN L230 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] [2021-11-22 22:51:21,232 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-22 22:51:21,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 22:51:21,306 INFO L208 MainTranslator]: Completed translation [2021-11-22 22:51:21,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:51:21 WrapperNode [2021-11-22 22:51:21,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 22:51:21,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 22:51:21,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 22:51:21,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 22:51:21,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:51:21" (1/1) ... [2021-11-22 22:51:21,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:51:21" (1/1) ... [2021-11-22 22:51:21,829 INFO L137 Inliner]: procedures = 242, calls = 2936, calls flagged for inlining = 415, calls inlined = 1197, statements flattened = 17583 [2021-11-22 22:51:21,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 22:51:21,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 22:51:21,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 22:51:21,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 22:51:21,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:51:21" (1/1) ... [2021-11-22 22:51:21,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:51:21" (1/1) ... [2021-11-22 22:51:21,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:51:21" (1/1) ... [2021-11-22 22:51:21,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:51:21" (1/1) ... [2021-11-22 22:51:22,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:51:21" (1/1) ... [2021-11-22 22:51:22,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:51:21" (1/1) ... [2021-11-22 22:51:22,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:51:21" (1/1) ... [2021-11-22 22:51:22,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 22:51:22,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 22:51:22,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 22:51:22,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 22:51:22,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:51:21" (1/1) ... [2021-11-22 22:51:22,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 22:51:22,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:51:22,673 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) [2021-11-22 22:51:22,703 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 [2021-11-22 22:51:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 22:51:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 22:51:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-22 22:51:22,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-22 22:51:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2021-11-22 22:51:22,720 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2021-11-22 22:51:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2021-11-22 22:51:22,720 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2021-11-22 22:51:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_init_transfer [2021-11-22 22:51:22,720 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_init_transfer [2021-11-22 22:51:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure bulk_irq [2021-11-22 22:51:22,720 INFO L138 BoogieDeclarations]: Found implementation of procedure bulk_irq [2021-11-22 22:51:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 22:51:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 22:51:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2021-11-22 22:51:22,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2021-11-22 22:51:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-22 22:51:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_submit_int_urb [2021-11-22 22:51:22,796 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_submit_int_urb [2021-11-22 22:51:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-22 22:51:22,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-22 22:51:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure int_irq [2021-11-22 22:51:22,796 INFO L138 BoogieDeclarations]: Found implementation of procedure int_irq [2021-11-22 22:51:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 22:51:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 22:51:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure fill_frame [2021-11-22 22:51:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_frame [2021-11-22 22:51:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_stream_off [2021-11-22 22:51:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_stream_off [2021-11-22 22:51:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 22:51:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure isoc_irq [2021-11-22 22:51:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isoc_irq [2021-11-22 22:51:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_input_create_urb [2021-11-22 22:51:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_input_create_urb [2021-11-22 22:51:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 22:51:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2021-11-22 22:51:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2021-11-22 22:51:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-11-22 22:51:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-11-22 22:51:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2021-11-22 22:51:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2021-11-22 22:51:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_9 [2021-11-22 22:51:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_9 [2021-11-22 22:51:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 22:51:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-22 22:51:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-22 22:51:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 22:51:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 22:51:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 22:51:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 22:51:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-22 22:51:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 22:51:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 22:51:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-22 22:51:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-22 22:51:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 22:51:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 22:51:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 22:51:23,581 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 22:51:23,583 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 22:51:32,500 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 22:51:32,549 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 22:51:32,550 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 22:51:32,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:51:32 BoogieIcfgContainer [2021-11-22 22:51:32,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 22:51:32,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 22:51:32,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 22:51:32,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 22:51:32,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:51:18" (1/3) ... [2021-11-22 22:51:32,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e21547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:51:32, skipping insertion in model container [2021-11-22 22:51:32,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:51:21" (2/3) ... [2021-11-22 22:51:32,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e21547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:51:32, skipping insertion in model container [2021-11-22 22:51:32,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:51:32" (3/3) ... [2021-11-22 22:51:32,565 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 [2021-11-22 22:51:32,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 22:51:32,571 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-22 22:51:32,640 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 22:51:32,650 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 [2021-11-22 22:51:32,650 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-22 22:51:32,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 3393 states, 3304 states have (on average 1.4473365617433414) internal successors, (4782), 3314 states have internal predecessors, (4782), 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) [2021-11-22 22:51:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 22:51:32,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:51:32,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:51:32,727 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)] === [2021-11-22 22:51:32,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:51:32,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2108174752, now seen corresponding path program 1 times [2021-11-22 22:51:32,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:51:32,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297576624] [2021-11-22 22:51:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:51:32,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:51:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:51:33,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:51:33,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297576624] [2021-11-22 22:51:33,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297576624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:51:33,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:51:33,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:51:33,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503162618] [2021-11-22 22:51:33,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:51:33,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:51:33,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:51:33,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:51:33,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:51:33,423 INFO L87 Difference]: Start difference. First operand has 3393 states, 3304 states have (on average 1.4473365617433414) internal successors, (4782), 3314 states have internal predecessors, (4782), 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 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-11-22 22:51:33,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:51:33,848 INFO L93 Difference]: Finished difference Result 9891 states and 14457 transitions. [2021-11-22 22:51:33,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:51:33,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2021-11-22 22:51:33,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:51:33,912 INFO L225 Difference]: With dead ends: 9891 [2021-11-22 22:51:33,912 INFO L226 Difference]: Without dead ends: 6485 [2021-11-22 22:51:33,940 INFO L932 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 [2021-11-22 22:51:33,943 INFO L933 BasicCegarLoop]: 4772 mSDtfsCounter, 4381 mSDsluCounter, 4699 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4381 SdHoareTripleChecker+Valid, 9471 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:51:33,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4381 Valid, 9471 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:51:33,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6485 states. [2021-11-22 22:51:34,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6485 to 6485. [2021-11-22 22:51:34,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6485 states, 6314 states have (on average 1.3959455178967375) internal successors, (8814), 6328 states have internal predecessors, (8814), 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) [2021-11-22 22:51:34,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6485 states to 6485 states and 9066 transitions. [2021-11-22 22:51:34,389 INFO L78 Accepts]: Start accepts. Automaton has 6485 states and 9066 transitions. Word has length 98 [2021-11-22 22:51:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:51:34,390 INFO L470 AbstractCegarLoop]: Abstraction has 6485 states and 9066 transitions. [2021-11-22 22:51:34,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2021-11-22 22:51:34,393 INFO L276 IsEmpty]: Start isEmpty. Operand 6485 states and 9066 transitions. [2021-11-22 22:51:34,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-22 22:51:34,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:51:34,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:51:34,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 22:51:34,408 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)] === [2021-11-22 22:51:34,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:51:34,409 INFO L85 PathProgramCache]: Analyzing trace with hash -368138677, now seen corresponding path program 1 times [2021-11-22 22:51:34,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:51:34,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896974316] [2021-11-22 22:51:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:51:34,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:51:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:34,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:51:34,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:51:34,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896974316] [2021-11-22 22:51:34,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896974316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:51:34,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:51:34,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:51:34,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746541008] [2021-11-22 22:51:34,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:51:34,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:51:34,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:51:34,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:51:34,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:51:34,639 INFO L87 Difference]: Start difference. First operand 6485 states and 9066 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2021-11-22 22:51:35,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:51:35,106 INFO L93 Difference]: Finished difference Result 12762 states and 17881 transitions. [2021-11-22 22:51:35,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:51:35,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 101 [2021-11-22 22:51:35,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:51:35,141 INFO L225 Difference]: With dead ends: 12762 [2021-11-22 22:51:35,141 INFO L226 Difference]: Without dead ends: 6484 [2021-11-22 22:51:35,160 INFO L932 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 [2021-11-22 22:51:35,161 INFO L933 BasicCegarLoop]: 8246 mSDtfsCounter, 8318 mSDsluCounter, 4649 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8318 SdHoareTripleChecker+Valid, 12895 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:51:35,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8318 Valid, 12895 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:51:35,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6484 states. [2021-11-22 22:51:35,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6484 to 6484. [2021-11-22 22:51:35,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6484 states, 6313 states have (on average 1.3955330270869635) internal successors, (8810), 6327 states have internal predecessors, (8810), 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) [2021-11-22 22:51:35,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6484 states to 6484 states and 9062 transitions. [2021-11-22 22:51:35,358 INFO L78 Accepts]: Start accepts. Automaton has 6484 states and 9062 transitions. Word has length 101 [2021-11-22 22:51:35,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:51:35,359 INFO L470 AbstractCegarLoop]: Abstraction has 6484 states and 9062 transitions. [2021-11-22 22:51:35,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2021-11-22 22:51:35,360 INFO L276 IsEmpty]: Start isEmpty. Operand 6484 states and 9062 transitions. [2021-11-22 22:51:35,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-22 22:51:35,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:51:35,365 INFO L514 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] [2021-11-22 22:51:35,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 22:51:35,365 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)] === [2021-11-22 22:51:35,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:51:35,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1083004433, now seen corresponding path program 1 times [2021-11-22 22:51:35,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:51:35,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002317911] [2021-11-22 22:51:35,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:51:35,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:51:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 22:51:35,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:51:35,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002317911] [2021-11-22 22:51:35,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002317911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:51:35,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:51:35,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 22:51:35,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534187293] [2021-11-22 22:51:35,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:51:35,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:51:35,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:51:35,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:51:35,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:51:35,819 INFO L87 Difference]: Start difference. First operand 6484 states and 9062 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) [2021-11-22 22:51:36,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:51:36,321 INFO L93 Difference]: Finished difference Result 19036 states and 27191 transitions. [2021-11-22 22:51:36,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:51:36,322 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 [2021-11-22 22:51:36,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:51:36,404 INFO L225 Difference]: With dead ends: 19036 [2021-11-22 22:51:36,405 INFO L226 Difference]: Without dead ends: 12759 [2021-11-22 22:51:36,449 INFO L932 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 [2021-11-22 22:51:36,450 INFO L933 BasicCegarLoop]: 4904 mSDtfsCounter, 4624 mSDsluCounter, 4484 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4624 SdHoareTripleChecker+Valid, 9388 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:51:36,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4624 Valid, 9388 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:51:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12759 states. [2021-11-22 22:51:36,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12759 to 12747. [2021-11-22 22:51:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12747 states, 12410 states have (on average 1.397743755036261) internal successors, (17346), 12434 states have internal predecessors, (17346), 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) [2021-11-22 22:51:37,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12747 states to 12747 states and 18102 transitions. [2021-11-22 22:51:37,075 INFO L78 Accepts]: Start accepts. Automaton has 12747 states and 18102 transitions. Word has length 128 [2021-11-22 22:51:37,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:51:37,076 INFO L470 AbstractCegarLoop]: Abstraction has 12747 states and 18102 transitions. [2021-11-22 22:51:37,077 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) [2021-11-22 22:51:37,077 INFO L276 IsEmpty]: Start isEmpty. Operand 12747 states and 18102 transitions. [2021-11-22 22:51:37,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-22 22:51:37,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:51:37,083 INFO L514 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] [2021-11-22 22:51:37,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 22:51:37,084 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)] === [2021-11-22 22:51:37,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:51:37,084 INFO L85 PathProgramCache]: Analyzing trace with hash 786609684, now seen corresponding path program 1 times [2021-11-22 22:51:37,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:51:37,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240272147] [2021-11-22 22:51:37,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:51:37,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:51:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:37,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 22:51:37,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:51:37,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240272147] [2021-11-22 22:51:37,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240272147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:51:37,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:51:37,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 22:51:37,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221777762] [2021-11-22 22:51:37,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:51:37,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:51:37,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:51:37,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:51:37,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:51:37,398 INFO L87 Difference]: Start difference. First operand 12747 states and 18102 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) [2021-11-22 22:51:37,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:51:37,734 INFO L93 Difference]: Finished difference Result 12747 states and 18102 transitions. [2021-11-22 22:51:37,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:51:37,735 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 [2021-11-22 22:51:37,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:51:37,804 INFO L225 Difference]: With dead ends: 12747 [2021-11-22 22:51:37,805 INFO L226 Difference]: Without dead ends: 12745 [2021-11-22 22:51:37,819 INFO L932 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 [2021-11-22 22:51:37,824 INFO L933 BasicCegarLoop]: 4689 mSDtfsCounter, 4568 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4568 SdHoareTripleChecker+Valid, 4689 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:51:37,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4568 Valid, 4689 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:51:37,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12745 states. [2021-11-22 22:51:38,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12745 to 12745. [2021-11-22 22:51:38,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12745 states, 12409 states have (on average 1.397695221210412) internal successors, (17344), 12432 states have internal predecessors, (17344), 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) [2021-11-22 22:51:38,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12745 states to 12745 states and 18100 transitions. [2021-11-22 22:51:38,419 INFO L78 Accepts]: Start accepts. Automaton has 12745 states and 18100 transitions. Word has length 129 [2021-11-22 22:51:38,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:51:38,419 INFO L470 AbstractCegarLoop]: Abstraction has 12745 states and 18100 transitions. [2021-11-22 22:51:38,420 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) [2021-11-22 22:51:38,425 INFO L276 IsEmpty]: Start isEmpty. Operand 12745 states and 18100 transitions. [2021-11-22 22:51:38,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-22 22:51:38,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:51:38,432 INFO L514 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] [2021-11-22 22:51:38,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 22:51:38,433 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)] === [2021-11-22 22:51:38,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:51:38,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1384894822, now seen corresponding path program 1 times [2021-11-22 22:51:38,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:51:38,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862982382] [2021-11-22 22:51:38,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:51:38,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:51:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 22:51:38,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:51:38,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862982382] [2021-11-22 22:51:38,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862982382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:51:38,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:51:38,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 22:51:38,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958217601] [2021-11-22 22:51:38,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:51:38,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:51:38,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:51:38,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:51:38,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:51:38,681 INFO L87 Difference]: Start difference. First operand 12745 states and 18100 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) [2021-11-22 22:51:39,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:51:39,064 INFO L93 Difference]: Finished difference Result 12745 states and 18100 transitions. [2021-11-22 22:51:39,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:51:39,065 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 [2021-11-22 22:51:39,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:51:39,118 INFO L225 Difference]: With dead ends: 12745 [2021-11-22 22:51:39,118 INFO L226 Difference]: Without dead ends: 12743 [2021-11-22 22:51:39,129 INFO L932 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 [2021-11-22 22:51:39,130 INFO L933 BasicCegarLoop]: 4687 mSDtfsCounter, 4565 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4565 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:51:39,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4565 Valid, 4687 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:51:39,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12743 states. [2021-11-22 22:51:39,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12743 to 12743. [2021-11-22 22:51:39,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12743 states, 12408 states have (on average 1.3976466795615732) internal successors, (17342), 12430 states have internal predecessors, (17342), 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) [2021-11-22 22:51:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12743 states to 12743 states and 18098 transitions. [2021-11-22 22:51:39,585 INFO L78 Accepts]: Start accepts. Automaton has 12743 states and 18098 transitions. Word has length 130 [2021-11-22 22:51:39,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:51:39,585 INFO L470 AbstractCegarLoop]: Abstraction has 12743 states and 18098 transitions. [2021-11-22 22:51:39,586 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) [2021-11-22 22:51:39,586 INFO L276 IsEmpty]: Start isEmpty. Operand 12743 states and 18098 transitions. [2021-11-22 22:51:39,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 22:51:39,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:51:39,591 INFO L514 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, 1] [2021-11-22 22:51:39,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 22:51:39,591 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)] === [2021-11-22 22:51:39,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:51:39,592 INFO L85 PathProgramCache]: Analyzing trace with hash 17942239, now seen corresponding path program 1 times [2021-11-22 22:51:39,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:51:39,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219355514] [2021-11-22 22:51:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:51:39,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:51:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 22:51:39,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:51:39,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219355514] [2021-11-22 22:51:39,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219355514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:51:39,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:51:39,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 22:51:39,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033128654] [2021-11-22 22:51:39,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:51:39,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:51:39,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:51:39,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:51:39,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:51:39,848 INFO L87 Difference]: Start difference. First operand 12743 states and 18098 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 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) [2021-11-22 22:51:40,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:51:40,239 INFO L93 Difference]: Finished difference Result 12743 states and 18098 transitions. [2021-11-22 22:51:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:51:40,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 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 131 [2021-11-22 22:51:40,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:51:40,296 INFO L225 Difference]: With dead ends: 12743 [2021-11-22 22:51:40,296 INFO L226 Difference]: Without dead ends: 12741 [2021-11-22 22:51:40,311 INFO L932 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 [2021-11-22 22:51:40,312 INFO L933 BasicCegarLoop]: 4685 mSDtfsCounter, 4562 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4562 SdHoareTripleChecker+Valid, 4685 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:51:40,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4562 Valid, 4685 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:51:40,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12741 states. [2021-11-22 22:51:40,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12741 to 12741. [2021-11-22 22:51:40,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12741 states, 12407 states have (on average 1.3975981300878537) internal successors, (17340), 12428 states have internal predecessors, (17340), 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) [2021-11-22 22:51:40,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12741 states to 12741 states and 18096 transitions. [2021-11-22 22:51:40,832 INFO L78 Accepts]: Start accepts. Automaton has 12741 states and 18096 transitions. Word has length 131 [2021-11-22 22:51:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:51:40,833 INFO L470 AbstractCegarLoop]: Abstraction has 12741 states and 18096 transitions. [2021-11-22 22:51:40,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 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) [2021-11-22 22:51:40,833 INFO L276 IsEmpty]: Start isEmpty. Operand 12741 states and 18096 transitions. [2021-11-22 22:51:40,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-22 22:51:40,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:51:40,839 INFO L514 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, 1, 1] [2021-11-22 22:51:40,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 22:51:40,840 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)] === [2021-11-22 22:51:40,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:51:40,842 INFO L85 PathProgramCache]: Analyzing trace with hash 556218181, now seen corresponding path program 1 times [2021-11-22 22:51:40,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:51:40,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456539651] [2021-11-22 22:51:40,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:51:40,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:51:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-22 22:51:41,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:51:41,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456539651] [2021-11-22 22:51:41,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456539651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:51:41,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:51:41,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 22:51:41,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649860588] [2021-11-22 22:51:41,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:51:41,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:51:41,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:51:41,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:51:41,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:51:41,107 INFO L87 Difference]: Start difference. First operand 12741 states and 18096 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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) [2021-11-22 22:51:41,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:51:41,442 INFO L93 Difference]: Finished difference Result 12741 states and 18096 transitions. [2021-11-22 22:51:41,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:51:41,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 132 [2021-11-22 22:51:41,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:51:41,499 INFO L225 Difference]: With dead ends: 12741 [2021-11-22 22:51:41,499 INFO L226 Difference]: Without dead ends: 12732 [2021-11-22 22:51:41,514 INFO L932 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 [2021-11-22 22:51:41,516 INFO L933 BasicCegarLoop]: 4684 mSDtfsCounter, 4559 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4559 SdHoareTripleChecker+Valid, 4684 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:51:41,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4559 Valid, 4684 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:51:41,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12732 states. [2021-11-22 22:51:41,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12732 to 12732. [2021-11-22 22:51:41,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12732 states, 12399 states have (on average 1.3976933623679328) internal successors, (17330), 12419 states have internal predecessors, (17330), 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) [2021-11-22 22:51:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12732 states to 12732 states and 18086 transitions. [2021-11-22 22:51:42,054 INFO L78 Accepts]: Start accepts. Automaton has 12732 states and 18086 transitions. Word has length 132 [2021-11-22 22:51:42,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:51:42,054 INFO L470 AbstractCegarLoop]: Abstraction has 12732 states and 18086 transitions. [2021-11-22 22:51:42,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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) [2021-11-22 22:51:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 12732 states and 18086 transitions. [2021-11-22 22:51:42,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-22 22:51:42,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:51:42,099 INFO L514 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] [2021-11-22 22:51:42,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 22:51:42,099 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)] === [2021-11-22 22:51:42,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:51:42,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1264341666, now seen corresponding path program 1 times [2021-11-22 22:51:42,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:51:42,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331574645] [2021-11-22 22:51:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:51:42,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:51:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:42,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-22 22:51:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:42,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 22:51:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:42,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-22 22:51:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-22 22:51:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 22:51:42,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:51:42,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331574645] [2021-11-22 22:51:42,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331574645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:51:42,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:51:42,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 22:51:42,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274779991] [2021-11-22 22:51:42,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:51:42,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 22:51:42,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:51:42,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 22:51:42,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:51:42,600 INFO L87 Difference]: Start difference. First operand 12732 states and 18086 transitions. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 4 states have internal predecessors, (206), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-22 22:51:48,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:51:48,313 INFO L93 Difference]: Finished difference Result 25933 states and 37485 transitions. [2021-11-22 22:51:48,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:51:48,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 4 states have internal predecessors, (206), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 217 [2021-11-22 22:51:48,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:51:48,383 INFO L225 Difference]: With dead ends: 25933 [2021-11-22 22:51:48,383 INFO L226 Difference]: Without dead ends: 13408 [2021-11-22 22:51:48,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 22:51:48,455 INFO L933 BasicCegarLoop]: 4216 mSDtfsCounter, 4817 mSDsluCounter, 7147 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4843 SdHoareTripleChecker+Valid, 11363 SdHoareTripleChecker+Invalid, 2268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:51:48,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4843 Valid, 11363 Invalid, 2268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1947 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-22 22:51:48,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13408 states. [2021-11-22 22:51:48,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13408 to 13340. [2021-11-22 22:51:48,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13340 states, 12919 states have (on average 1.33911293443765) internal successors, (17300), 12971 states have internal predecessors, (17300), 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) [2021-11-22 22:51:48,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13340 states to 13340 states and 18284 transitions. [2021-11-22 22:51:48,973 INFO L78 Accepts]: Start accepts. Automaton has 13340 states and 18284 transitions. Word has length 217 [2021-11-22 22:51:48,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:51:48,974 INFO L470 AbstractCegarLoop]: Abstraction has 13340 states and 18284 transitions. [2021-11-22 22:51:48,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 4 states have internal predecessors, (206), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-22 22:51:48,974 INFO L276 IsEmpty]: Start isEmpty. Operand 13340 states and 18284 transitions. [2021-11-22 22:51:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-22 22:51:49,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:51:49,018 INFO L514 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] [2021-11-22 22:51:49,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 22:51:49,019 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)] === [2021-11-22 22:51:49,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:51:49,020 INFO L85 PathProgramCache]: Analyzing trace with hash -94367328, now seen corresponding path program 1 times [2021-11-22 22:51:49,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:51:49,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247039976] [2021-11-22 22:51:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:51:49,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:51:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:49,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-22 22:51:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:49,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 22:51:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:49,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-22 22:51:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:49,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-22 22:51:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:49,481 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 22:51:49,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:51:49,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247039976] [2021-11-22 22:51:49,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247039976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:51:49,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:51:49,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:51:49,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036110853] [2021-11-22 22:51:49,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:51:49,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:51:49,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:51:49,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:51:49,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:51:49,485 INFO L87 Difference]: Start difference. First operand 13340 states and 18284 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 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) [2021-11-22 22:51:54,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:51:54,782 INFO L93 Difference]: Finished difference Result 26657 states and 37295 transitions. [2021-11-22 22:51:54,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:51:54,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 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 217 [2021-11-22 22:51:54,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:51:54,853 INFO L225 Difference]: With dead ends: 26657 [2021-11-22 22:51:54,853 INFO L226 Difference]: Without dead ends: 13524 [2021-11-22 22:51:54,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:51:54,916 INFO L933 BasicCegarLoop]: 4395 mSDtfsCounter, 325 mSDsluCounter, 7606 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 12001 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-22 22:51:54,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 12001 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-22 22:51:54,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13524 states. [2021-11-22 22:51:55,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13524 to 13344. [2021-11-22 22:51:55,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13344 states, 12923 states have (on average 1.3390079702855373) internal successors, (17304), 12975 states have internal predecessors, (17304), 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) [2021-11-22 22:51:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13344 states to 13344 states and 18288 transitions. [2021-11-22 22:51:55,559 INFO L78 Accepts]: Start accepts. Automaton has 13344 states and 18288 transitions. Word has length 217 [2021-11-22 22:51:55,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:51:55,560 INFO L470 AbstractCegarLoop]: Abstraction has 13344 states and 18288 transitions. [2021-11-22 22:51:55,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 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) [2021-11-22 22:51:55,560 INFO L276 IsEmpty]: Start isEmpty. Operand 13344 states and 18288 transitions. [2021-11-22 22:51:55,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-22 22:51:55,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:51:55,608 INFO L514 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] [2021-11-22 22:51:55,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 22:51:55,609 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)] === [2021-11-22 22:51:55,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:51:55,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1215578143, now seen corresponding path program 1 times [2021-11-22 22:51:55,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:51:55,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091667907] [2021-11-22 22:51:55,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:51:55,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:51:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:55,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-22 22:51:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:55,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 22:51:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:55,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-22 22:51:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:56,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-22 22:51:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:51:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 22:51:56,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:51:56,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091667907] [2021-11-22 22:51:56,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091667907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:51:56,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:51:56,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 22:51:56,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907234269] [2021-11-22 22:51:56,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:51:56,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 22:51:56,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:51:56,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 22:51:56,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:51:56,099 INFO L87 Difference]: Start difference. First operand 13344 states and 18288 transitions. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-22 22:52:02,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:52:02,821 INFO L93 Difference]: Finished difference Result 26805 states and 37413 transitions. [2021-11-22 22:52:02,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 22:52:02,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 219 [2021-11-22 22:52:02,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:52:02,892 INFO L225 Difference]: With dead ends: 26805 [2021-11-22 22:52:02,892 INFO L226 Difference]: Without dead ends: 13668 [2021-11-22 22:52:02,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 22:52:02,955 INFO L933 BasicCegarLoop]: 4400 mSDtfsCounter, 396 mSDsluCounter, 12051 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 16451 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:52:02,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 16451 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-22 22:52:02,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13668 states. [2021-11-22 22:52:03,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13668 to 13344. [2021-11-22 22:52:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13344 states, 12923 states have (on average 1.338698444633599) internal successors, (17300), 12975 states have internal predecessors, (17300), 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) [2021-11-22 22:52:03,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13344 states to 13344 states and 18284 transitions. [2021-11-22 22:52:03,449 INFO L78 Accepts]: Start accepts. Automaton has 13344 states and 18284 transitions. Word has length 219 [2021-11-22 22:52:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:52:03,450 INFO L470 AbstractCegarLoop]: Abstraction has 13344 states and 18284 transitions. [2021-11-22 22:52:03,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-22 22:52:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 13344 states and 18284 transitions. [2021-11-22 22:52:03,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-22 22:52:03,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:52:03,494 INFO L514 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] [2021-11-22 22:52:03,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 22:52:03,494 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)] === [2021-11-22 22:52:03,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:52:03,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1295602203, now seen corresponding path program 1 times [2021-11-22 22:52:03,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:52:03,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534905845] [2021-11-22 22:52:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:52:03,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:52:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:52:03,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-22 22:52:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:52:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-22 22:52:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:52:04,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-22 22:52:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:52:04,231 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 22:52:04,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:52:04,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534905845] [2021-11-22 22:52:04,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534905845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:52:04,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:52:04,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-22 22:52:04,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549993644] [2021-11-22 22:52:04,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:52:04,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 22:52:04,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:52:04,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 22:52:04,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-22 22:52:04,235 INFO L87 Difference]: Start difference. First operand 13344 states and 18284 transitions. Second operand has 15 states, 15 states have (on average 14.466666666666667) internal successors, (217), 14 states have internal predecessors, (217), 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) [2021-11-22 22:52:11,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 22:52:25,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 22:52:32,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 22:52:36,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 22:52:45,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 22:52:53,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:52:53,324 INFO L93 Difference]: Finished difference Result 70382 states and 96886 transitions. [2021-11-22 22:52:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-22 22:52:53,325 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 14.466666666666667) internal successors, (217), 14 states have internal predecessors, (217), 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 226 [2021-11-22 22:52:53,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:52:53,529 INFO L225 Difference]: With dead ends: 70382 [2021-11-22 22:52:53,529 INFO L226 Difference]: Without dead ends: 57245 [2021-11-22 22:52:53,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=284, Invalid=906, Unknown=0, NotChecked=0, Total=1190 [2021-11-22 22:52:53,612 INFO L933 BasicCegarLoop]: 7721 mSDtfsCounter, 28722 mSDsluCounter, 56228 mSDsCounter, 0 mSdLazyCounter, 12457 mSolverCounterSat, 2339 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28801 SdHoareTripleChecker+Valid, 63949 SdHoareTripleChecker+Invalid, 14799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2339 IncrementalHoareTripleChecker+Valid, 12457 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:52:53,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28801 Valid, 63949 Invalid, 14799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2339 Valid, 12457 Invalid, 3 Unknown, 0 Unchecked, 47.0s Time] [2021-11-22 22:52:53,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57245 states. [2021-11-22 22:52:54,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57245 to 14264. [2021-11-22 22:52:54,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14264 states, 13783 states have (on average 1.3473119059711238) internal successors, (18570), 13835 states have internal predecessors, (18570), 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) [2021-11-22 22:52:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14264 states to 14264 states and 19918 transitions. [2021-11-22 22:52:55,001 INFO L78 Accepts]: Start accepts. Automaton has 14264 states and 19918 transitions. Word has length 226 [2021-11-22 22:52:55,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:52:55,002 INFO L470 AbstractCegarLoop]: Abstraction has 14264 states and 19918 transitions. [2021-11-22 22:52:55,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.466666666666667) internal successors, (217), 14 states have internal predecessors, (217), 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) [2021-11-22 22:52:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 14264 states and 19918 transitions. [2021-11-22 22:52:55,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-22 22:52:55,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:52:55,059 INFO L514 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] [2021-11-22 22:52:55,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 22:52:55,059 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)] === [2021-11-22 22:52:55,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:52:55,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1432607143, now seen corresponding path program 1 times [2021-11-22 22:52:55,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:52:55,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171506345] [2021-11-22 22:52:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:52:55,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:52:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:52:55,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-22 22:52:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:52:55,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-22 22:52:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:52:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-22 22:52:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:52:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-22 22:52:55,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:52:55,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171506345] [2021-11-22 22:52:55,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171506345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:52:55,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:52:55,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:52:55,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745103050] [2021-11-22 22:52:55,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:52:55,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:52:55,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:52:55,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:52:55,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:52:55,330 INFO L87 Difference]: Start difference. First operand 14264 states and 19918 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-22 22:53:00,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 22:53:02,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:53:02,087 INFO L93 Difference]: Finished difference Result 28906 states and 40483 transitions. [2021-11-22 22:53:02,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:53:02,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 226 [2021-11-22 22:53:02,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:53:02,147 INFO L225 Difference]: With dead ends: 28906 [2021-11-22 22:53:02,147 INFO L226 Difference]: Without dead ends: 14846 [2021-11-22 22:53:02,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:53:02,199 INFO L933 BasicCegarLoop]: 4397 mSDtfsCounter, 293 mSDsluCounter, 7560 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 11957 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:53:02,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 11957 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-22 22:53:02,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14846 states. [2021-11-22 22:53:02,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14846 to 14266. [2021-11-22 22:53:02,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14266 states, 13785 states have (on average 1.3472615161407326) internal successors, (18572), 13837 states have internal predecessors, (18572), 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) [2021-11-22 22:53:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14266 states to 14266 states and 19920 transitions. [2021-11-22 22:53:02,999 INFO L78 Accepts]: Start accepts. Automaton has 14266 states and 19920 transitions. Word has length 226 [2021-11-22 22:53:02,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:53:02,999 INFO L470 AbstractCegarLoop]: Abstraction has 14266 states and 19920 transitions. [2021-11-22 22:53:03,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-22 22:53:03,000 INFO L276 IsEmpty]: Start isEmpty. Operand 14266 states and 19920 transitions. [2021-11-22 22:53:03,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-22 22:53:03,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:53:03,033 INFO L514 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] [2021-11-22 22:53:03,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 22:53:03,033 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)] === [2021-11-22 22:53:03,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:53:03,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1295788299, now seen corresponding path program 1 times [2021-11-22 22:53:03,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:53:03,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364417682] [2021-11-22 22:53:03,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:53:03,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:53:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:03,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-22 22:53:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:03,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-22 22:53:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-22 22:53:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 22:53:03,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:53:03,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364417682] [2021-11-22 22:53:03,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364417682] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 22:53:03,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317997959] [2021-11-22 22:53:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:53:03,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:53:03,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:53:03,329 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) [2021-11-22 22:53:03,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 22:53:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:04,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 3649 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 22:53:04,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 22:53:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 22:53:04,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 22:53:05,148 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 22:53:05,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317997959] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 22:53:05,149 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 22:53:05,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2021-11-22 22:53:05,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058135889] [2021-11-22 22:53:05,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 22:53:05,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 22:53:05,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:53:05,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 22:53:05,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-22 22:53:05,151 INFO L87 Difference]: Start difference. First operand 14266 states and 19920 transitions. Second operand has 8 states, 8 states have (on average 33.625) internal successors, (269), 7 states have internal predecessors, (269), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-22 22:53:10,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:53:10,904 INFO L93 Difference]: Finished difference Result 29049 states and 40766 transitions. [2021-11-22 22:53:10,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 22:53:10,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 33.625) internal successors, (269), 7 states have internal predecessors, (269), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 228 [2021-11-22 22:53:10,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:53:10,957 INFO L225 Difference]: With dead ends: 29049 [2021-11-22 22:53:10,957 INFO L226 Difference]: Without dead ends: 14988 [2021-11-22 22:53:11,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-22 22:53:11,004 INFO L933 BasicCegarLoop]: 4384 mSDtfsCounter, 293 mSDsluCounter, 11910 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 16294 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:53:11,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 16294 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-22 22:53:11,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14988 states. [2021-11-22 22:53:11,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14988 to 14408. [2021-11-22 22:53:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14408 states, 13927 states have (on average 1.3437208300423638) internal successors, (18714), 13979 states have internal predecessors, (18714), 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) [2021-11-22 22:53:11,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14408 states to 14408 states and 20062 transitions. [2021-11-22 22:53:11,657 INFO L78 Accepts]: Start accepts. Automaton has 14408 states and 20062 transitions. Word has length 228 [2021-11-22 22:53:11,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:53:11,657 INFO L470 AbstractCegarLoop]: Abstraction has 14408 states and 20062 transitions. [2021-11-22 22:53:11,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 33.625) internal successors, (269), 7 states have internal predecessors, (269), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-22 22:53:11,658 INFO L276 IsEmpty]: Start isEmpty. Operand 14408 states and 20062 transitions. [2021-11-22 22:53:11,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-22 22:53:11,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:53:11,686 INFO L514 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] [2021-11-22 22:53:11,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 22:53:11,899 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 [2021-11-22 22:53:11,900 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)] === [2021-11-22 22:53:11,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:53:11,900 INFO L85 PathProgramCache]: Analyzing trace with hash -583698949, now seen corresponding path program 1 times [2021-11-22 22:53:11,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:53:11,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150875180] [2021-11-22 22:53:11,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:53:11,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:53:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:12,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-22 22:53:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 22:53:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:12,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-22 22:53:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:12,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-22 22:53:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:12,612 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 22:53:12,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:53:12,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150875180] [2021-11-22 22:53:12,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150875180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:53:12,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:53:12,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 22:53:12,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74433087] [2021-11-22 22:53:12,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:53:12,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 22:53:12,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:53:12,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 22:53:12,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-22 22:53:12,614 INFO L87 Difference]: Start difference. First operand 14408 states and 20062 transitions. Second operand has 10 states, 10 states have (on average 21.7) internal successors, (217), 9 states have internal predecessors, (217), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-22 22:53:19,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 22:53:27,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:53:27,762 INFO L93 Difference]: Finished difference Result 36878 states and 53354 transitions. [2021-11-22 22:53:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-22 22:53:27,763 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.7) internal successors, (217), 9 states have internal predecessors, (217), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 234 [2021-11-22 22:53:27,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:53:27,852 INFO L225 Difference]: With dead ends: 36878 [2021-11-22 22:53:27,852 INFO L226 Difference]: Without dead ends: 22685 [2021-11-22 22:53:27,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=280, Invalid=980, Unknown=0, NotChecked=0, Total=1260 [2021-11-22 22:53:27,921 INFO L933 BasicCegarLoop]: 8593 mSDtfsCounter, 5038 mSDsluCounter, 61850 mSDsCounter, 0 mSdLazyCounter, 4174 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5038 SdHoareTripleChecker+Valid, 70443 SdHoareTripleChecker+Invalid, 4440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 4174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-11-22 22:53:27,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5038 Valid, 70443 Invalid, 4440 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [266 Valid, 4174 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2021-11-22 22:53:27,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22685 states. [2021-11-22 22:53:28,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22685 to 21520. [2021-11-22 22:53:28,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21520 states, 20797 states have (on average 1.344280425061307) internal successors, (27957), 20873 states have internal predecessors, (27957), 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) [2021-11-22 22:53:28,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21520 states to 21520 states and 30505 transitions. [2021-11-22 22:53:28,904 INFO L78 Accepts]: Start accepts. Automaton has 21520 states and 30505 transitions. Word has length 234 [2021-11-22 22:53:28,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:53:28,905 INFO L470 AbstractCegarLoop]: Abstraction has 21520 states and 30505 transitions. [2021-11-22 22:53:28,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.7) internal successors, (217), 9 states have internal predecessors, (217), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-22 22:53:28,905 INFO L276 IsEmpty]: Start isEmpty. Operand 21520 states and 30505 transitions. [2021-11-22 22:53:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-22 22:53:28,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:53:28,938 INFO L514 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] [2021-11-22 22:53:28,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 22:53:28,939 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)] === [2021-11-22 22:53:28,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:53:28,940 INFO L85 PathProgramCache]: Analyzing trace with hash -84015771, now seen corresponding path program 1 times [2021-11-22 22:53:28,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:53:28,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710025327] [2021-11-22 22:53:28,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:53:28,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:53:29,033 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 22:53:29,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636059644] [2021-11-22 22:53:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:53:29,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:53:29,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:53:29,035 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) [2021-11-22 22:53:29,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 22:53:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:30,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 4083 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 22:53:30,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 22:53:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 22:53:30,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 22:53:30,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:53:30,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710025327] [2021-11-22 22:53:30,446 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 22:53:30,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636059644] [2021-11-22 22:53:30,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636059644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:53:30,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:53:30,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:53:30,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219458451] [2021-11-22 22:53:30,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:53:30,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:53:30,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:53:30,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:53:30,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:53:30,448 INFO L87 Difference]: Start difference. First operand 21520 states and 30505 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2021-11-22 22:53:31,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:53:31,729 INFO L93 Difference]: Finished difference Result 56306 states and 78915 transitions. [2021-11-22 22:53:31,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:53:31,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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 261 [2021-11-22 22:53:31,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:53:31,856 INFO L225 Difference]: With dead ends: 56306 [2021-11-22 22:53:31,857 INFO L226 Difference]: Without dead ends: 35001 [2021-11-22 22:53:31,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:53:31,954 INFO L933 BasicCegarLoop]: 7077 mSDtfsCounter, 2928 mSDsluCounter, 4426 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2941 SdHoareTripleChecker+Valid, 11503 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:53:31,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2941 Valid, 11503 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:53:31,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35001 states. [2021-11-22 22:53:33,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35001 to 23140. [2021-11-22 22:53:33,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23140 states, 22417 states have (on average 1.3410804300307801) internal successors, (30063), 22493 states have internal predecessors, (30063), 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) [2021-11-22 22:53:33,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23140 states to 23140 states and 32611 transitions. [2021-11-22 22:53:33,227 INFO L78 Accepts]: Start accepts. Automaton has 23140 states and 32611 transitions. Word has length 261 [2021-11-22 22:53:33,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:53:33,227 INFO L470 AbstractCegarLoop]: Abstraction has 23140 states and 32611 transitions. [2021-11-22 22:53:33,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2021-11-22 22:53:33,228 INFO L276 IsEmpty]: Start isEmpty. Operand 23140 states and 32611 transitions. [2021-11-22 22:53:33,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-22 22:53:33,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:53:33,254 INFO L514 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] [2021-11-22 22:53:33,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 22:53:33,479 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,SelfDestructingSolverStorable14 [2021-11-22 22:53:33,480 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)] === [2021-11-22 22:53:33,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:53:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash 155694790, now seen corresponding path program 1 times [2021-11-22 22:53:33,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:53:33,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921336677] [2021-11-22 22:53:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:53:33,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:53:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:33,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-22 22:53:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:33,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-22 22:53:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-22 22:53:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:33,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-22 22:53:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 22:53:33,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:53:33,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921336677] [2021-11-22 22:53:33,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921336677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:53:33,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:53:33,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:53:33,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674222799] [2021-11-22 22:53:33,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:53:33,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:53:33,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:53:33,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:53:33,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:53:33,834 INFO L87 Difference]: Start difference. First operand 23140 states and 32611 transitions. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 3 states have internal predecessors, (246), 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) [2021-11-22 22:53:38,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 22:53:40,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:53:40,799 INFO L93 Difference]: Finished difference Result 47005 states and 68539 transitions. [2021-11-22 22:53:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 22:53:40,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 3 states have internal predecessors, (246), 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 263 [2021-11-22 22:53:40,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:53:40,911 INFO L225 Difference]: With dead ends: 47005 [2021-11-22 22:53:40,911 INFO L226 Difference]: Without dead ends: 24080 [2021-11-22 22:53:41,049 INFO L932 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 [2021-11-22 22:53:41,050 INFO L933 BasicCegarLoop]: 4400 mSDtfsCounter, 293 mSDsluCounter, 7617 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 12017 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-22 22:53:41,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 12017 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-11-22 22:53:41,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24080 states. [2021-11-22 22:53:41,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24080 to 23146. [2021-11-22 22:53:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23146 states, 22423 states have (on average 1.3409891629130803) internal successors, (30069), 22499 states have internal predecessors, (30069), 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) [2021-11-22 22:53:42,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23146 states to 23146 states and 32617 transitions. [2021-11-22 22:53:42,010 INFO L78 Accepts]: Start accepts. Automaton has 23146 states and 32617 transitions. Word has length 263 [2021-11-22 22:53:42,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:53:42,011 INFO L470 AbstractCegarLoop]: Abstraction has 23146 states and 32617 transitions. [2021-11-22 22:53:42,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 3 states have internal predecessors, (246), 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) [2021-11-22 22:53:42,011 INFO L276 IsEmpty]: Start isEmpty. Operand 23146 states and 32617 transitions. [2021-11-22 22:53:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-11-22 22:53:42,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:53:42,037 INFO L514 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] [2021-11-22 22:53:42,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 22:53:42,037 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)] === [2021-11-22 22:53:42,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:53:42,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1784887224, now seen corresponding path program 1 times [2021-11-22 22:53:42,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:53:42,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95958785] [2021-11-22 22:53:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:53:42,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:53:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:42,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-22 22:53:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:42,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-22 22:53:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:42,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-22 22:53:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:42,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-22 22:53:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:42,656 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 22:53:42,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:53:42,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95958785] [2021-11-22 22:53:42,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95958785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:53:42,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:53:42,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 22:53:42,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387100408] [2021-11-22 22:53:42,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:53:42,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 22:53:42,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:53:42,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 22:53:42,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:53:42,660 INFO L87 Difference]: Start difference. First operand 23146 states and 32617 transitions. Second operand has 5 states, 5 states have (on average 49.2) internal successors, (246), 4 states have internal predecessors, (246), 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) [2021-11-22 22:53:48,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:53:48,982 INFO L93 Difference]: Finished difference Result 47917 states and 69871 transitions. [2021-11-22 22:53:48,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 22:53:48,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.2) internal successors, (246), 4 states have internal predecessors, (246), 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 263 [2021-11-22 22:53:48,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:53:49,082 INFO L225 Difference]: With dead ends: 47917 [2021-11-22 22:53:49,082 INFO L226 Difference]: Without dead ends: 24986 [2021-11-22 22:53:49,344 INFO L932 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 [2021-11-22 22:53:49,345 INFO L933 BasicCegarLoop]: 4499 mSDtfsCounter, 495 mSDsluCounter, 12182 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 16681 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-22 22:53:49,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 16681 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-22 22:53:49,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24986 states. [2021-11-22 22:53:50,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24986 to 23158. [2021-11-22 22:53:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23158 states, 22435 states have (on average 1.340806775128148) internal successors, (30081), 22511 states have internal predecessors, (30081), 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) [2021-11-22 22:53:50,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23158 states to 23158 states and 32629 transitions. [2021-11-22 22:53:50,422 INFO L78 Accepts]: Start accepts. Automaton has 23158 states and 32629 transitions. Word has length 263 [2021-11-22 22:53:50,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:53:50,422 INFO L470 AbstractCegarLoop]: Abstraction has 23158 states and 32629 transitions. [2021-11-22 22:53:50,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.2) internal successors, (246), 4 states have internal predecessors, (246), 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) [2021-11-22 22:53:50,423 INFO L276 IsEmpty]: Start isEmpty. Operand 23158 states and 32629 transitions. [2021-11-22 22:53:50,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-22 22:53:50,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:53:50,455 INFO L514 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] [2021-11-22 22:53:50,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 22:53:50,455 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)] === [2021-11-22 22:53:50,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:53:50,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2035394980, now seen corresponding path program 1 times [2021-11-22 22:53:50,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:53:50,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65994061] [2021-11-22 22:53:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:53:50,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:53:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:50,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-22 22:53:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:51,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 22:53:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:51,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-22 22:53:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:51,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-22 22:53:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 22:53:51,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:53:51,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65994061] [2021-11-22 22:53:51,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65994061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:53:51,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:53:51,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 22:53:51,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619492427] [2021-11-22 22:53:51,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:53:51,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 22:53:51,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:53:51,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 22:53:51,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-22 22:53:51,522 INFO L87 Difference]: Start difference. First operand 23158 states and 32629 transitions. Second operand has 12 states, 12 states have (on average 18.75) internal successors, (225), 11 states have internal predecessors, (225), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-22 22:53:57,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 22:53:59,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 22:54:01,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 22:54:06,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:54:06,602 INFO L93 Difference]: Finished difference Result 55159 states and 80983 transitions. [2021-11-22 22:54:06,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-22 22:54:06,603 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 11 states have internal predecessors, (225), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 242 [2021-11-22 22:54:06,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:54:06,718 INFO L225 Difference]: With dead ends: 55159 [2021-11-22 22:54:06,719 INFO L226 Difference]: Without dead ends: 32189 [2021-11-22 22:54:06,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=639, Invalid=2331, Unknown=0, NotChecked=0, Total=2970 [2021-11-22 22:54:06,822 INFO L933 BasicCegarLoop]: 4693 mSDtfsCounter, 14809 mSDsluCounter, 42732 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14809 SdHoareTripleChecker+Valid, 47425 SdHoareTripleChecker+Invalid, 5597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:54:06,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14809 Valid, 47425 Invalid, 5597 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [792 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2021-11-22 22:54:06,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32189 states. [2021-11-22 22:54:08,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32189 to 30698. [2021-11-22 22:54:08,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30698 states, 29747 states have (on average 1.34100917739604) internal successors, (39891), 29843 states have internal predecessors, (39891), 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) [2021-11-22 22:54:08,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30698 states to 30698 states and 43885 transitions. [2021-11-22 22:54:08,605 INFO L78 Accepts]: Start accepts. Automaton has 30698 states and 43885 transitions. Word has length 242 [2021-11-22 22:54:08,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:54:08,606 INFO L470 AbstractCegarLoop]: Abstraction has 30698 states and 43885 transitions. [2021-11-22 22:54:08,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 11 states have internal predecessors, (225), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-22 22:54:08,607 INFO L276 IsEmpty]: Start isEmpty. Operand 30698 states and 43885 transitions. [2021-11-22 22:54:08,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-22 22:54:08,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:54:08,644 INFO L514 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] [2021-11-22 22:54:08,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 22:54:08,644 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)] === [2021-11-22 22:54:08,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:54:08,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1189631048, now seen corresponding path program 1 times [2021-11-22 22:54:08,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:54:08,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106795411] [2021-11-22 22:54:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:54:08,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:54:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:08,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-22 22:54:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:08,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-22 22:54:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:09,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-22 22:54:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:09,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-22 22:54:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:09,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-22 22:54:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:09,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-22 22:54:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:09,279 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 22:54:09,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:54:09,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106795411] [2021-11-22 22:54:09,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106795411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:54:09,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:54:09,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 22:54:09,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161213798] [2021-11-22 22:54:09,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:54:09,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 22:54:09,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:54:09,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 22:54:09,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-22 22:54:09,282 INFO L87 Difference]: Start difference. First operand 30698 states and 43885 transitions. Second operand has 10 states, 10 states have (on average 26.1) internal successors, (261), 7 states have internal predecessors, (261), 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) [2021-11-22 22:54:15,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 22:54:17,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:54:17,122 INFO L93 Difference]: Finished difference Result 62447 states and 92293 transitions. [2021-11-22 22:54:17,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 22:54:17,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 26.1) internal successors, (261), 7 states have internal predecessors, (261), 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 282 [2021-11-22 22:54:17,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:54:17,263 INFO L225 Difference]: With dead ends: 62447 [2021-11-22 22:54:17,264 INFO L226 Difference]: Without dead ends: 31964 [2021-11-22 22:54:17,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-22 22:54:17,394 INFO L933 BasicCegarLoop]: 4412 mSDtfsCounter, 365 mSDsluCounter, 29636 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 34048 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:54:17,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 34048 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-22 22:54:17,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31964 states. [2021-11-22 22:54:18,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31964 to 30730. [2021-11-22 22:54:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30730 states, 29771 states have (on average 1.340734271606597) internal successors, (39915), 29867 states have internal predecessors, (39915), 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) [2021-11-22 22:54:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30730 states to 30730 states and 43933 transitions. [2021-11-22 22:54:18,997 INFO L78 Accepts]: Start accepts. Automaton has 30730 states and 43933 transitions. Word has length 282 [2021-11-22 22:54:18,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:54:18,998 INFO L470 AbstractCegarLoop]: Abstraction has 30730 states and 43933 transitions. [2021-11-22 22:54:18,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.1) internal successors, (261), 7 states have internal predecessors, (261), 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) [2021-11-22 22:54:18,998 INFO L276 IsEmpty]: Start isEmpty. Operand 30730 states and 43933 transitions. [2021-11-22 22:54:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-22 22:54:19,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:54:19,034 INFO L514 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] [2021-11-22 22:54:19,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 22:54:19,034 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)] === [2021-11-22 22:54:19,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:54:19,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2058465600, now seen corresponding path program 1 times [2021-11-22 22:54:19,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:54:19,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223452908] [2021-11-22 22:54:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:54:19,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:54:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:19,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-22 22:54:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:19,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-22 22:54:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:19,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-22 22:54:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:19,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-22 22:54:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:19,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-22 22:54:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:19,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-22 22:54:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 22:54:19,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:54:19,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223452908] [2021-11-22 22:54:19,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223452908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:54:19,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:54:19,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 22:54:19,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069563604] [2021-11-22 22:54:19,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:54:19,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 22:54:19,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:54:19,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 22:54:19,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 22:54:19,567 INFO L87 Difference]: Start difference. First operand 30730 states and 43933 transitions. Second operand has 6 states, 6 states have (on average 43.666666666666664) internal successors, (262), 5 states have internal predecessors, (262), 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) [2021-11-22 22:54:26,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:54:26,050 INFO L93 Difference]: Finished difference Result 62491 states and 92313 transitions. [2021-11-22 22:54:26,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 22:54:26,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.666666666666664) internal successors, (262), 5 states have internal predecessors, (262), 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 283 [2021-11-22 22:54:26,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:54:26,195 INFO L225 Difference]: With dead ends: 62491 [2021-11-22 22:54:26,195 INFO L226 Difference]: Without dead ends: 31976 [2021-11-22 22:54:26,354 INFO L932 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 [2021-11-22 22:54:26,354 INFO L933 BasicCegarLoop]: 4418 mSDtfsCounter, 357 mSDsluCounter, 16426 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 20844 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-22 22:54:26,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 20844 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-22 22:54:26,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31976 states. [2021-11-22 22:54:27,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31976 to 30742. [2021-11-22 22:54:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30742 states, 29783 states have (on average 1.340529832454756) internal successors, (39925), 29879 states have internal predecessors, (39925), 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) [2021-11-22 22:54:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30742 states to 30742 states and 43943 transitions. [2021-11-22 22:54:27,980 INFO L78 Accepts]: Start accepts. Automaton has 30742 states and 43943 transitions. Word has length 283 [2021-11-22 22:54:27,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:54:27,980 INFO L470 AbstractCegarLoop]: Abstraction has 30742 states and 43943 transitions. [2021-11-22 22:54:27,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.666666666666664) internal successors, (262), 5 states have internal predecessors, (262), 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) [2021-11-22 22:54:27,981 INFO L276 IsEmpty]: Start isEmpty. Operand 30742 states and 43943 transitions. [2021-11-22 22:54:28,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-22 22:54:28,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:54:28,017 INFO L514 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, 1, 1, 1] [2021-11-22 22:54:28,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 22:54:28,017 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)] === [2021-11-22 22:54:28,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:54:28,017 INFO L85 PathProgramCache]: Analyzing trace with hash -984371168, now seen corresponding path program 1 times [2021-11-22 22:54:28,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:54:28,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966324912] [2021-11-22 22:54:28,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:54:28,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:54:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:28,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-22 22:54:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:28,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-22 22:54:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:28,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-22 22:54:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:29,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 22:54:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:29,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-22 22:54:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:29,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-22 22:54:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 22:54:29,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:54:29,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966324912] [2021-11-22 22:54:29,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966324912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:54:29,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:54:29,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 22:54:29,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48492215] [2021-11-22 22:54:29,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:54:29,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 22:54:29,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:54:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 22:54:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-22 22:54:29,428 INFO L87 Difference]: Start difference. First operand 30742 states and 43943 transitions. Second operand has 12 states, 12 states have (on average 22.166666666666668) internal successors, (266), 11 states have internal predecessors, (266), 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) [2021-11-22 22:54:34,664 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 22:54:40,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:54:40,379 INFO L93 Difference]: Finished difference Result 62552 states and 92523 transitions. [2021-11-22 22:54:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-22 22:54:40,380 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.166666666666668) internal successors, (266), 11 states have internal predecessors, (266), 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 287 [2021-11-22 22:54:40,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:54:40,539 INFO L225 Difference]: With dead ends: 62552 [2021-11-22 22:54:40,539 INFO L226 Difference]: Without dead ends: 32025 [2021-11-22 22:54:40,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2021-11-22 22:54:40,680 INFO L933 BasicCegarLoop]: 4572 mSDtfsCounter, 5660 mSDsluCounter, 42831 mSDsCounter, 0 mSdLazyCounter, 3732 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5664 SdHoareTripleChecker+Valid, 47403 SdHoareTripleChecker+Invalid, 4056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 3732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-22 22:54:40,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5664 Valid, 47403 Invalid, 4056 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [324 Valid, 3732 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-11-22 22:54:40,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32025 states. [2021-11-22 22:54:42,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32025 to 30742. [2021-11-22 22:54:42,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30742 states, 29783 states have (on average 1.340462680052379) internal successors, (39923), 29879 states have internal predecessors, (39923), 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) [2021-11-22 22:54:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30742 states to 30742 states and 43941 transitions. [2021-11-22 22:54:42,438 INFO L78 Accepts]: Start accepts. Automaton has 30742 states and 43941 transitions. Word has length 287 [2021-11-22 22:54:42,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:54:42,439 INFO L470 AbstractCegarLoop]: Abstraction has 30742 states and 43941 transitions. [2021-11-22 22:54:42,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.166666666666668) internal successors, (266), 11 states have internal predecessors, (266), 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) [2021-11-22 22:54:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 30742 states and 43941 transitions. [2021-11-22 22:54:42,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-22 22:54:42,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:54:42,492 INFO L514 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, 1, 1, 1] [2021-11-22 22:54:42,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 22:54:42,493 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)] === [2021-11-22 22:54:42,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:54:42,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1877857506, now seen corresponding path program 1 times [2021-11-22 22:54:42,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:54:42,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003930800] [2021-11-22 22:54:42,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:54:42,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:54:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:42,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-22 22:54:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:43,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-22 22:54:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:43,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-22 22:54:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:43,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 22:54:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:43,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-22 22:54:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:43,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-22 22:54:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 22:54:43,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:54:43,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003930800] [2021-11-22 22:54:43,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003930800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:54:43,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:54:43,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-22 22:54:43,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698266321] [2021-11-22 22:54:43,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:54:43,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 22:54:43,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:54:43,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 22:54:43,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-22 22:54:43,879 INFO L87 Difference]: Start difference. First operand 30742 states and 43941 transitions. Second operand has 15 states, 14 states have (on average 19.0) internal successors, (266), 14 states have internal predecessors, (266), 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) [2021-11-22 22:54:51,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 22:54:53,328 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-22 22:54:57,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:54:57,351 INFO L93 Difference]: Finished difference Result 62666 states and 92781 transitions. [2021-11-22 22:54:57,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 22:54:57,354 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 19.0) internal successors, (266), 14 states have internal predecessors, (266), 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 287 [2021-11-22 22:54:57,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:54:57,509 INFO L225 Difference]: With dead ends: 62666 [2021-11-22 22:54:57,509 INFO L226 Difference]: Without dead ends: 32133 [2021-11-22 22:54:57,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=338, Invalid=2112, Unknown=0, NotChecked=0, Total=2450 [2021-11-22 22:54:57,657 INFO L933 BasicCegarLoop]: 4571 mSDtfsCounter, 5685 mSDsluCounter, 56214 mSDsCounter, 0 mSdLazyCounter, 4911 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5689 SdHoareTripleChecker+Valid, 60785 SdHoareTripleChecker+Invalid, 5256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 4911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-11-22 22:54:57,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5689 Valid, 60785 Invalid, 5256 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [345 Valid, 4911 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2021-11-22 22:54:57,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32133 states. [2021-11-22 22:54:59,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32133 to 30748. [2021-11-22 22:54:59,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30748 states, 29787 states have (on average 1.3404169604189746) internal successors, (39927), 29885 states have internal predecessors, (39927), 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) [2021-11-22 22:54:59,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30748 states to 30748 states and 43953 transitions. [2021-11-22 22:54:59,316 INFO L78 Accepts]: Start accepts. Automaton has 30748 states and 43953 transitions. Word has length 287 [2021-11-22 22:54:59,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:54:59,316 INFO L470 AbstractCegarLoop]: Abstraction has 30748 states and 43953 transitions. [2021-11-22 22:54:59,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 19.0) internal successors, (266), 14 states have internal predecessors, (266), 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) [2021-11-22 22:54:59,316 INFO L276 IsEmpty]: Start isEmpty. Operand 30748 states and 43953 transitions. [2021-11-22 22:54:59,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-11-22 22:54:59,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:54:59,361 INFO L514 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, 1, 1, 1, 1, 1] [2021-11-22 22:54:59,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 22:54:59,361 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)] === [2021-11-22 22:54:59,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:54:59,362 INFO L85 PathProgramCache]: Analyzing trace with hash -497963212, now seen corresponding path program 1 times [2021-11-22 22:54:59,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:54:59,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715518300] [2021-11-22 22:54:59,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:54:59,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:54:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:59,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-22 22:54:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:59,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-22 22:54:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:59,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-22 22:54:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:59,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 22:54:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:59,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-22 22:54:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:59,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-22 22:54:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:55:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 22:55:00,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:55:00,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715518300] [2021-11-22 22:55:00,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715518300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:55:00,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:55:00,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 22:55:00,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832391940] [2021-11-22 22:55:00,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:55:00,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 22:55:00,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:55:00,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 22:55:00,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-22 22:55:00,006 INFO L87 Difference]: Start difference. First operand 30748 states and 43953 transitions. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 8 states have internal predecessors, (268), 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) [2021-11-22 22:55:16,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:55:16,928 INFO L93 Difference]: Finished difference Result 175965 states and 322432 transitions. [2021-11-22 22:55:16,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-22 22:55:16,928 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 8 states have internal predecessors, (268), 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 289 [2021-11-22 22:55:16,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:55:18,976 INFO L225 Difference]: With dead ends: 175965 [2021-11-22 22:55:18,977 INFO L226 Difference]: Without dead ends: 145426 [2021-11-22 22:55:19,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-11-22 22:55:19,601 INFO L933 BasicCegarLoop]: 13902 mSDtfsCounter, 24155 mSDsluCounter, 57493 mSDsCounter, 0 mSdLazyCounter, 8823 mSolverCounterSat, 3044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24438 SdHoareTripleChecker+Valid, 71395 SdHoareTripleChecker+Invalid, 11867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3044 IncrementalHoareTripleChecker+Valid, 8823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:55:19,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24438 Valid, 71395 Invalid, 11867 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3044 Valid, 8823 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2021-11-22 22:55:19,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145426 states.