./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--input--misc--ims-pcu.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--input--misc--ims-pcu.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 7f108eec0e6f75d7c7724c96156fb3bec5ecbcd0f2a8def1b3ebffa34d9deb6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 22:48:35,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 22:48:35,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 22:48:35,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 22:48:35,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 22:48:35,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 22:48:35,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 22:48:35,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 22:48:35,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 22:48:35,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 22:48:35,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 22:48:35,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 22:48:35,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 22:48:35,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 22:48:35,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 22:48:35,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 22:48:35,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 22:48:35,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 22:48:35,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 22:48:35,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 22:48:35,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 22:48:35,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 22:48:35,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 22:48:35,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 22:48:35,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 22:48:35,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 22:48:35,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 22:48:35,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 22:48:35,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 22:48:35,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 22:48:35,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 22:48:35,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 22:48:35,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 22:48:35,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 22:48:35,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 22:48:35,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 22:48:35,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 22:48:35,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 22:48:35,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 22:48:35,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 22:48:35,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 22:48:35,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 22:48:35,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 22:48:35,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 22:48:35,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 22:48:35,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 22:48:35,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 22:48:35,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 22:48:35,767 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 22:48:35,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 22:48:35,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 22:48:35,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 22:48:35,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 22:48:35,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 22:48:35,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 22:48:35,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 22:48:35,769 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 22:48:35,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 22:48:35,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 22:48:35,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 22:48:35,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 22:48:35,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 22:48:35,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 22:48:35,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 22:48:35,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 22:48:35,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 22:48:35,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 22:48:35,770 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 22:48:35,770 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 22:48:35,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 22:48:35,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 22:48:35,772 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f108eec0e6f75d7c7724c96156fb3bec5ecbcd0f2a8def1b3ebffa34d9deb6c [2021-11-22 22:48:35,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 22:48:35,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 22:48:35,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 22:48:35,975 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 22:48:35,976 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 22:48:35,977 INFO L432 ainManager$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--input--misc--ims-pcu.ko-entry_point.cil.out.i [2021-11-22 22:48:36,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb1bcdd1/e9eb279b764c4694bd126bbfa0484061/FLAGff53b0923 [2021-11-22 22:48:36,539 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 22:48:36,539 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--input--misc--ims-pcu.ko-entry_point.cil.out.i [2021-11-22 22:48:36,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb1bcdd1/e9eb279b764c4694bd126bbfa0484061/FLAGff53b0923 [2021-11-22 22:48:36,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdb1bcdd1/e9eb279b764c4694bd126bbfa0484061 [2021-11-22 22:48:36,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 22:48:36,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 22:48:36,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 22:48:36,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 22:48:36,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 22:48:36,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:48:36" (1/1) ... [2021-11-22 22:48:36,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a1d2f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:48:36, skipping insertion in model container [2021-11-22 22:48:36,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:48:36" (1/1) ... [2021-11-22 22:48:36,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 22:48:36,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 22:48:37,431 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--input--misc--ims-pcu.ko-entry_point.cil.out.i[114617,114630] [2021-11-22 22:48:37,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 22:48:37,922 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 22:48:37,992 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--input--misc--ims-pcu.ko-entry_point.cil.out.i[114617,114630] [2021-11-22 22:48:38,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 22:48:38,192 INFO L208 MainTranslator]: Completed translation [2021-11-22 22:48:38,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:48:38 WrapperNode [2021-11-22 22:48:38,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 22:48:38,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 22:48:38,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 22:48:38,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 22:48:38,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:48:38" (1/1) ... [2021-11-22 22:48:38,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:48:38" (1/1) ... [2021-11-22 22:48:38,659 INFO L137 Inliner]: procedures = 222, calls = 1486, calls flagged for inlining = 394, calls inlined = 1266, statements flattened = 22675 [2021-11-22 22:48:38,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 22:48:38,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 22:48:38,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 22:48:38,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 22:48:38,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:48:38" (1/1) ... [2021-11-22 22:48:38,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:48:38" (1/1) ... [2021-11-22 22:48:38,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:48:38" (1/1) ... [2021-11-22 22:48:38,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:48:38" (1/1) ... [2021-11-22 22:48:39,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:48:38" (1/1) ... [2021-11-22 22:48:39,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:48:38" (1/1) ... [2021-11-22 22:48:39,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:48:38" (1/1) ... [2021-11-22 22:48:39,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 22:48:39,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 22:48:39,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 22:48:39,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 22:48:39,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:48:38" (1/1) ... [2021-11-22 22:48:39,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 22:48:39,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:48:39,407 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 22:48:39,413 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 22:48:39,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 22:48:39,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 22:48:39,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-22 22:48:39,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-22 22:48:39,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 22:48:39,439 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-22 22:48:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 22:48:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-22 22:48:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 22:48:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 22:48:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 22:48:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 22:48:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-11-22 22:48:39,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-11-22 22:48:39,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 22:48:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 22:48:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 22:48:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 22:48:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 22:48:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 22:48:39,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 22:48:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_irq [2021-11-22 22:48:39,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_irq [2021-11-22 22:48:39,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 22:48:39,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 22:48:39,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 22:48:39,989 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 22:48:39,990 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 22:48:49,929 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 22:48:49,959 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 22:48:49,959 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 22:48:49,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:48:49 BoogieIcfgContainer [2021-11-22 22:48:49,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 22:48:49,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 22:48:49,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 22:48:49,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 22:48:49,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:48:36" (1/3) ... [2021-11-22 22:48:49,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191a2b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:48:49, skipping insertion in model container [2021-11-22 22:48:49,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:48:38" (2/3) ... [2021-11-22 22:48:49,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191a2b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:48:49, skipping insertion in model container [2021-11-22 22:48:49,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:48:49" (3/3) ... [2021-11-22 22:48:49,973 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2021-11-22 22:48:49,980 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 22:48:49,980 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-22 22:48:50,032 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 22:48:50,039 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 22:48:50,039 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-22 22:48:50,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 2973 states, 2952 states have (on average 1.4132791327913279) internal successors, (4172), 2958 states have internal predecessors, (4172), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-22 22:48:50,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-22 22:48:50,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:48:50,103 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] [2021-11-22 22:48:50,103 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 22:48:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:48:50,107 INFO L85 PathProgramCache]: Analyzing trace with hash 68824103, now seen corresponding path program 1 times [2021-11-22 22:48:50,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:48:50,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854951044] [2021-11-22 22:48:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:48:50,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:48:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:48:50,582 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 22:48:50,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:48:50,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854951044] [2021-11-22 22:48:50,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854951044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:48:50,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:48:50,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:48:50,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517814787] [2021-11-22 22:48:50,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:48:50,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:48:50,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:48:50,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:48:50,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:48:50,629 INFO L87 Difference]: Start difference. First operand has 2973 states, 2952 states have (on average 1.4132791327913279) internal successors, (4172), 2958 states have internal predecessors, (4172), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 22:48:51,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:48:51,026 INFO L93 Difference]: Finished difference Result 8680 states and 12261 transitions. [2021-11-22 22:48:51,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:48:51,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2021-11-22 22:48:51,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:48:51,062 INFO L225 Difference]: With dead ends: 8680 [2021-11-22 22:48:51,062 INFO L226 Difference]: Without dead ends: 5678 [2021-11-22 22:48:51,075 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 22:48:51,079 INFO L933 BasicCegarLoop]: 4143 mSDtfsCounter, 3867 mSDsluCounter, 4113 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3867 SdHoareTripleChecker+Valid, 8256 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:48:51,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3867 Valid, 8256 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:48:51,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5678 states. [2021-11-22 22:48:51,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5678 to 5678. [2021-11-22 22:48:51,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5678 states, 5643 states have (on average 1.3994329257487153) internal successors, (7897), 5649 states have internal predecessors, (7897), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-22 22:48:51,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5678 states to 5678 states and 7941 transitions. [2021-11-22 22:48:51,270 INFO L78 Accepts]: Start accepts. Automaton has 5678 states and 7941 transitions. Word has length 73 [2021-11-22 22:48:51,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:48:51,271 INFO L470 AbstractCegarLoop]: Abstraction has 5678 states and 7941 transitions. [2021-11-22 22:48:51,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 22:48:51,271 INFO L276 IsEmpty]: Start isEmpty. Operand 5678 states and 7941 transitions. [2021-11-22 22:48:51,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 22:48:51,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:48:51,275 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] [2021-11-22 22:48:51,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 22:48:51,275 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 22:48:51,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:48:51,276 INFO L85 PathProgramCache]: Analyzing trace with hash -152115344, now seen corresponding path program 1 times [2021-11-22 22:48:51,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:48:51,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134891274] [2021-11-22 22:48:51,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:48:51,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:48:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:48:51,526 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 22:48:51,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:48:51,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134891274] [2021-11-22 22:48:51,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134891274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:48:51,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:48:51,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 22:48:51,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428381177] [2021-11-22 22:48:51,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:48:51,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:48:51,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:48:51,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:48:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:48:51,533 INFO L87 Difference]: Start difference. First operand 5678 states and 7941 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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 22:48:51,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:48:51,800 INFO L93 Difference]: Finished difference Result 16782 states and 23588 transitions. [2021-11-22 22:48:51,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:48:51,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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 79 [2021-11-22 22:48:51,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:48:51,841 INFO L225 Difference]: With dead ends: 16782 [2021-11-22 22:48:51,841 INFO L226 Difference]: Without dead ends: 11229 [2021-11-22 22:48:51,855 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 22:48:51,857 INFO L933 BasicCegarLoop]: 4815 mSDtfsCounter, 4022 mSDsluCounter, 3921 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4022 SdHoareTripleChecker+Valid, 8736 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:48:51,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4022 Valid, 8736 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:48:51,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11229 states. [2021-11-22 22:48:52,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11229 to 11217. [2021-11-22 22:48:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11217 states, 11152 states have (on average 1.4000179340028693) internal successors, (15613), 11160 states have internal predecessors, (15613), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-22 22:48:52,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11217 states to 11217 states and 15723 transitions. [2021-11-22 22:48:52,117 INFO L78 Accepts]: Start accepts. Automaton has 11217 states and 15723 transitions. Word has length 79 [2021-11-22 22:48:52,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:48:52,119 INFO L470 AbstractCegarLoop]: Abstraction has 11217 states and 15723 transitions. [2021-11-22 22:48:52,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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 22:48:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 11217 states and 15723 transitions. [2021-11-22 22:48:52,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-22 22:48:52,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:48:52,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:48:52,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 22:48:52,121 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:48:52,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:48:52,122 INFO L85 PathProgramCache]: Analyzing trace with hash -420600408, now seen corresponding path program 1 times [2021-11-22 22:48:52,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:48:52,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572806273] [2021-11-22 22:48:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:48:52,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:48:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:48:52,282 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 22:48:52,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:48:52,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572806273] [2021-11-22 22:48:52,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572806273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:48:52,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:48:52,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 22:48:52,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934747466] [2021-11-22 22:48:52,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:48:52,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:48:52,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:48:52,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:48:52,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:48:52,285 INFO L87 Difference]: Start difference. First operand 11217 states and 15723 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 22:48:52,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:48:52,553 INFO L93 Difference]: Finished difference Result 11217 states and 15723 transitions. [2021-11-22 22:48:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:48:52,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2021-11-22 22:48:52,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:48:52,590 INFO L225 Difference]: With dead ends: 11217 [2021-11-22 22:48:52,591 INFO L226 Difference]: Without dead ends: 11215 [2021-11-22 22:48:52,594 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 22:48:52,598 INFO L933 BasicCegarLoop]: 4098 mSDtfsCounter, 4021 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4021 SdHoareTripleChecker+Valid, 4098 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 22:48:52,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4021 Valid, 4098 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:48:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11215 states. [2021-11-22 22:48:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11215 to 11215. [2021-11-22 22:48:52,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11215 states, 11151 states have (on average 1.399964128777688) internal successors, (15611), 11158 states have internal predecessors, (15611), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-22 22:48:52,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11215 states to 11215 states and 15721 transitions. [2021-11-22 22:48:52,876 INFO L78 Accepts]: Start accepts. Automaton has 11215 states and 15721 transitions. Word has length 80 [2021-11-22 22:48:52,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:48:52,878 INFO L470 AbstractCegarLoop]: Abstraction has 11215 states and 15721 transitions. [2021-11-22 22:48:52,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 22:48:52,879 INFO L276 IsEmpty]: Start isEmpty. Operand 11215 states and 15721 transitions. [2021-11-22 22:48:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-22 22:48:52,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:48:52,881 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] [2021-11-22 22:48:52,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 22:48:52,882 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:48:52,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:48:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash -153702789, now seen corresponding path program 1 times [2021-11-22 22:48:52,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:48:52,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423978417] [2021-11-22 22:48:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:48:52,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:48:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:48:52,997 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 22:48:52,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:48:52,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423978417] [2021-11-22 22:48:52,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423978417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:48:52,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:48:52,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 22:48:52,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903744672] [2021-11-22 22:48:52,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:48:52,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:48:52,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:48:52,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:48:52,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:48:52,999 INFO L87 Difference]: Start difference. First operand 11215 states and 15721 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 22:48:53,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:48:53,141 INFO L93 Difference]: Finished difference Result 11215 states and 15721 transitions. [2021-11-22 22:48:53,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:48:53,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2021-11-22 22:48:53,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:48:53,164 INFO L225 Difference]: With dead ends: 11215 [2021-11-22 22:48:53,165 INFO L226 Difference]: Without dead ends: 11213 [2021-11-22 22:48:53,172 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 22:48:53,172 INFO L933 BasicCegarLoop]: 4096 mSDtfsCounter, 4018 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4018 SdHoareTripleChecker+Valid, 4096 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 22:48:53,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4018 Valid, 4096 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:48:53,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11213 states. [2021-11-22 22:48:53,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11213 to 11213. [2021-11-22 22:48:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11213 states, 11150 states have (on average 1.3999103139013453) internal successors, (15609), 11156 states have internal predecessors, (15609), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-22 22:48:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11213 states to 11213 states and 15719 transitions. [2021-11-22 22:48:53,531 INFO L78 Accepts]: Start accepts. Automaton has 11213 states and 15719 transitions. Word has length 81 [2021-11-22 22:48:53,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:48:53,532 INFO L470 AbstractCegarLoop]: Abstraction has 11213 states and 15719 transitions. [2021-11-22 22:48:53,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 22:48:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 11213 states and 15719 transitions. [2021-11-22 22:48:53,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-22 22:48:53,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:48:53,534 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] [2021-11-22 22:48:53,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 22:48:53,535 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:48:53,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:48:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash -469811181, now seen corresponding path program 1 times [2021-11-22 22:48:53,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:48:53,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912765219] [2021-11-22 22:48:53,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:48:53,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:48:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:48:53,670 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 22:48:53,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:48:53,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912765219] [2021-11-22 22:48:53,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912765219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:48:53,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:48:53,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 22:48:53,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050807933] [2021-11-22 22:48:53,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:48:53,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:48:53,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:48:53,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:48:53,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:48:53,673 INFO L87 Difference]: Start difference. First operand 11213 states and 15719 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 22:48:53,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:48:53,852 INFO L93 Difference]: Finished difference Result 11213 states and 15719 transitions. [2021-11-22 22:48:53,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:48:53,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 82 [2021-11-22 22:48:53,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:48:53,875 INFO L225 Difference]: With dead ends: 11213 [2021-11-22 22:48:53,876 INFO L226 Difference]: Without dead ends: 11211 [2021-11-22 22:48:53,882 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 22:48:53,883 INFO L933 BasicCegarLoop]: 4094 mSDtfsCounter, 4015 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4015 SdHoareTripleChecker+Valid, 4094 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 22:48:53,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4015 Valid, 4094 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:48:53,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11211 states. [2021-11-22 22:48:54,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11211 to 11211. [2021-11-22 22:48:54,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11211 states, 11149 states have (on average 1.399856489371244) internal successors, (15607), 11154 states have internal predecessors, (15607), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-22 22:48:54,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11211 states to 11211 states and 15717 transitions. [2021-11-22 22:48:54,184 INFO L78 Accepts]: Start accepts. Automaton has 11211 states and 15717 transitions. Word has length 82 [2021-11-22 22:48:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:48:54,184 INFO L470 AbstractCegarLoop]: Abstraction has 11211 states and 15717 transitions. [2021-11-22 22:48:54,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 22:48:54,185 INFO L276 IsEmpty]: Start isEmpty. Operand 11211 states and 15717 transitions. [2021-11-22 22:48:54,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-22 22:48:54,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:48:54,187 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] [2021-11-22 22:48:54,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 22:48:54,187 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:48:54,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:48:54,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1679236730, now seen corresponding path program 1 times [2021-11-22 22:48:54,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:48:54,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613230329] [2021-11-22 22:48:54,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:48:54,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:48:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:48:54,289 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 22:48:54,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:48:54,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613230329] [2021-11-22 22:48:54,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613230329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:48:54,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:48:54,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 22:48:54,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193123016] [2021-11-22 22:48:54,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:48:54,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:48:54,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:48:54,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:48:54,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:48:54,292 INFO L87 Difference]: Start difference. First operand 11211 states and 15717 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 22:48:54,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:48:54,555 INFO L93 Difference]: Finished difference Result 11211 states and 15717 transitions. [2021-11-22 22:48:54,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:48:54,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 83 [2021-11-22 22:48:54,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:48:54,574 INFO L225 Difference]: With dead ends: 11211 [2021-11-22 22:48:54,574 INFO L226 Difference]: Without dead ends: 11200 [2021-11-22 22:48:54,577 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 22:48:54,578 INFO L933 BasicCegarLoop]: 4093 mSDtfsCounter, 4012 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4012 SdHoareTripleChecker+Valid, 4093 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 22:48:54,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4012 Valid, 4093 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:48:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11200 states. [2021-11-22 22:48:54,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11200 to 11200. [2021-11-22 22:48:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11200 states, 11139 states have (on average 1.399856360535057) internal successors, (15593), 11143 states have internal predecessors, (15593), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-22 22:48:54,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11200 states to 11200 states and 15703 transitions. [2021-11-22 22:48:54,809 INFO L78 Accepts]: Start accepts. Automaton has 11200 states and 15703 transitions. Word has length 83 [2021-11-22 22:48:54,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:48:54,809 INFO L470 AbstractCegarLoop]: Abstraction has 11200 states and 15703 transitions. [2021-11-22 22:48:54,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 22:48:54,810 INFO L276 IsEmpty]: Start isEmpty. Operand 11200 states and 15703 transitions. [2021-11-22 22:48:54,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-22 22:48:54,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:48:54,818 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:54,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 22:48:54,818 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:48:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:48:54,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1678529985, now seen corresponding path program 1 times [2021-11-22 22:48:54,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:48:54,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328266302] [2021-11-22 22:48:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:48:54,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:48:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:48:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:48:54,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:48:54,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328266302] [2021-11-22 22:48:54,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328266302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:48:54,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:48:54,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:48:54,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391699391] [2021-11-22 22:48:54,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:48:54,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:48:54,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:48:54,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:48:54,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:48:54,926 INFO L87 Difference]: Start difference. First operand 11200 states and 15703 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 22:48:55,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:48:55,288 INFO L93 Difference]: Finished difference Result 29078 states and 41103 transitions. [2021-11-22 22:48:55,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:48:55,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 142 [2021-11-22 22:48:55,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:48:55,328 INFO L225 Difference]: With dead ends: 29078 [2021-11-22 22:48:55,328 INFO L226 Difference]: Without dead ends: 18003 [2021-11-22 22:48:55,353 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 22:48:55,355 INFO L933 BasicCegarLoop]: 4095 mSDtfsCounter, 2605 mSDsluCounter, 3915 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2605 SdHoareTripleChecker+Valid, 8010 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:48:55,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2605 Valid, 8010 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:48:55,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18003 states. [2021-11-22 22:48:55,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18003 to 17994. [2021-11-22 22:48:55,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17994 states, 17933 states have (on average 1.4179445714604362) internal successors, (25428), 17937 states have internal predecessors, (25428), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-22 22:48:55,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17994 states to 17994 states and 25538 transitions. [2021-11-22 22:48:55,828 INFO L78 Accepts]: Start accepts. Automaton has 17994 states and 25538 transitions. Word has length 142 [2021-11-22 22:48:55,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:48:55,828 INFO L470 AbstractCegarLoop]: Abstraction has 17994 states and 25538 transitions. [2021-11-22 22:48:55,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 22:48:55,828 INFO L276 IsEmpty]: Start isEmpty. Operand 17994 states and 25538 transitions. [2021-11-22 22:48:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-22 22:48:55,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:48:55,847 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:55,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 22:48:55,847 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 22:48:55,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:48:55,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1313899134, now seen corresponding path program 1 times [2021-11-22 22:48:55,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:48:55,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100232600] [2021-11-22 22:48:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:48:55,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:48:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:48:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 22:48:55,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:48:55,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100232600] [2021-11-22 22:48:55,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100232600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:48:55,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:48:55,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:48:55,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304140638] [2021-11-22 22:48:55,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:48:55,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:48:55,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:48:55,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:48:55,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:48:55,969 INFO L87 Difference]: Start difference. First operand 17994 states and 25538 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 22:48:56,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:48:56,291 INFO L93 Difference]: Finished difference Result 28714 states and 40795 transitions. [2021-11-22 22:48:56,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:48:56,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 165 [2021-11-22 22:48:56,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:48:56,315 INFO L225 Difference]: With dead ends: 28714 [2021-11-22 22:48:56,315 INFO L226 Difference]: Without dead ends: 10844 [2021-11-22 22:48:56,340 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 22:48:56,341 INFO L933 BasicCegarLoop]: 4091 mSDtfsCounter, 4 mSDsluCounter, 4083 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8174 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:48:56,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 8174 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:48:56,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10844 states. [2021-11-22 22:48:56,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10844 to 10840. [2021-11-22 22:48:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10840 states, 10809 states have (on average 1.4197428069201592) internal successors, (15346), 10811 states have internal predecessors, (15346), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-22 22:48:56,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10840 states to 10840 states and 15401 transitions. [2021-11-22 22:48:56,571 INFO L78 Accepts]: Start accepts. Automaton has 10840 states and 15401 transitions. Word has length 165 [2021-11-22 22:48:56,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:48:56,572 INFO L470 AbstractCegarLoop]: Abstraction has 10840 states and 15401 transitions. [2021-11-22 22:48:56,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 22:48:56,572 INFO L276 IsEmpty]: Start isEmpty. Operand 10840 states and 15401 transitions. [2021-11-22 22:48:56,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-22 22:48:56,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:48:56,584 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:48:56,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 22:48:56,584 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 22:48:56,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:48:56,585 INFO L85 PathProgramCache]: Analyzing trace with hash 845062449, now seen corresponding path program 1 times [2021-11-22 22:48:56,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:48:56,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885832506] [2021-11-22 22:48:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:48:56,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:48:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:48:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 22:48:56,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:48:56,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885832506] [2021-11-22 22:48:56,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885832506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:48:56,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:48:56,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:48:56,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902935546] [2021-11-22 22:48:56,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:48:56,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:48:56,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:48:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:48:56,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:48:56,737 INFO L87 Difference]: Start difference. First operand 10840 states and 15401 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 22:48:57,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:48:57,261 INFO L93 Difference]: Finished difference Result 34438 states and 49118 transitions. [2021-11-22 22:48:57,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:48:57,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 189 [2021-11-22 22:48:57,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:48:57,319 INFO L225 Difference]: With dead ends: 34438 [2021-11-22 22:48:57,320 INFO L226 Difference]: Without dead ends: 25422 [2021-11-22 22:48:57,345 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 22:48:57,347 INFO L933 BasicCegarLoop]: 6874 mSDtfsCounter, 8261 mSDsluCounter, 10908 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8265 SdHoareTripleChecker+Valid, 17782 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:48:57,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8265 Valid, 17782 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:48:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25422 states. [2021-11-22 22:48:57,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25422 to 10844. [2021-11-22 22:48:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10844 states, 10813 states have (on average 1.4195875335244612) internal successors, (15350), 10815 states have internal predecessors, (15350), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-22 22:48:57,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10844 states to 10844 states and 15405 transitions. [2021-11-22 22:48:57,819 INFO L78 Accepts]: Start accepts. Automaton has 10844 states and 15405 transitions. Word has length 189 [2021-11-22 22:48:57,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:48:57,820 INFO L470 AbstractCegarLoop]: Abstraction has 10844 states and 15405 transitions. [2021-11-22 22:48:57,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 22:48:57,820 INFO L276 IsEmpty]: Start isEmpty. Operand 10844 states and 15405 transitions. [2021-11-22 22:48:57,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-22 22:48:57,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:48:57,833 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:48:57,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 22:48:57,833 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 22:48:57,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:48:57,834 INFO L85 PathProgramCache]: Analyzing trace with hash -583270701, now seen corresponding path program 1 times [2021-11-22 22:48:57,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:48:57,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57785620] [2021-11-22 22:48:57,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:48:57,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:48:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:48:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 22:48:58,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:48:58,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57785620] [2021-11-22 22:48:58,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57785620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:48:58,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:48:58,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 22:48:58,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737464125] [2021-11-22 22:48:58,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:48:58,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 22:48:58,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:48:58,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 22:48:58,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:48:58,010 INFO L87 Difference]: Start difference. First operand 10844 states and 15405 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 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 22:48:58,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:48:58,863 INFO L93 Difference]: Finished difference Result 41864 states and 59743 transitions. [2021-11-22 22:48:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 22:48:58,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 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 211 [2021-11-22 22:48:58,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:48:58,938 INFO L225 Difference]: With dead ends: 41864 [2021-11-22 22:48:58,938 INFO L226 Difference]: Without dead ends: 32844 [2021-11-22 22:48:58,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 22:48:58,971 INFO L933 BasicCegarLoop]: 6895 mSDtfsCounter, 16743 mSDsluCounter, 20585 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16747 SdHoareTripleChecker+Valid, 27480 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:48:58,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16747 Valid, 27480 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:48:59,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32844 states. [2021-11-22 22:48:59,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32844 to 10850. [2021-11-22 22:48:59,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10850 states, 10819 states have (on average 1.4193548387096775) internal successors, (15356), 10821 states have internal predecessors, (15356), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-22 22:48:59,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10850 states to 10850 states and 15411 transitions. [2021-11-22 22:48:59,595 INFO L78 Accepts]: Start accepts. Automaton has 10850 states and 15411 transitions. Word has length 211 [2021-11-22 22:48:59,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:48:59,595 INFO L470 AbstractCegarLoop]: Abstraction has 10850 states and 15411 transitions. [2021-11-22 22:48:59,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 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 22:48:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 10850 states and 15411 transitions. [2021-11-22 22:48:59,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-22 22:48:59,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:48:59,610 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:48:59,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 22:48:59,611 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 22:48:59,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:48:59,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1901108838, now seen corresponding path program 1 times [2021-11-22 22:48:59,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:48:59,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789544728] [2021-11-22 22:48:59,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:48:59,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:48:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:48:59,778 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 22:48:59,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:48:59,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789544728] [2021-11-22 22:48:59,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789544728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:48:59,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:48:59,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 22:48:59,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740168766] [2021-11-22 22:48:59,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:48:59,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 22:48:59,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:48:59,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 22:48:59,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:48:59,781 INFO L87 Difference]: Start difference. First operand 10850 states and 15411 transitions. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 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 22:49:01,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:49:01,010 INFO L93 Difference]: Finished difference Result 41900 states and 59787 transitions. [2021-11-22 22:49:01,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 22:49:01,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 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 213 [2021-11-22 22:49:01,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:49:01,079 INFO L225 Difference]: With dead ends: 41900 [2021-11-22 22:49:01,080 INFO L226 Difference]: Without dead ends: 32874 [2021-11-22 22:49:01,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 22:49:01,106 INFO L933 BasicCegarLoop]: 6993 mSDtfsCounter, 16645 mSDsluCounter, 20610 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16649 SdHoareTripleChecker+Valid, 27603 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:49:01,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16649 Valid, 27603 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:49:01,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32874 states. [2021-11-22 22:49:01,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32874 to 10856. [2021-11-22 22:49:01,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10856 states, 10825 states have (on average 1.419122401847575) internal successors, (15362), 10827 states have internal predecessors, (15362), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-22 22:49:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10856 states to 10856 states and 15417 transitions. [2021-11-22 22:49:01,621 INFO L78 Accepts]: Start accepts. Automaton has 10856 states and 15417 transitions. Word has length 213 [2021-11-22 22:49:01,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:49:01,622 INFO L470 AbstractCegarLoop]: Abstraction has 10856 states and 15417 transitions. [2021-11-22 22:49:01,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 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 22:49:01,622 INFO L276 IsEmpty]: Start isEmpty. Operand 10856 states and 15417 transitions. [2021-11-22 22:49:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-22 22:49:01,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:49:01,634 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:49:01,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 22:49:01,635 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 22:49:01,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:49:01,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1546504365, now seen corresponding path program 1 times [2021-11-22 22:49:01,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:49:01,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584675621] [2021-11-22 22:49:01,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:49:01,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:49:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:49:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 22:49:01,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:49:01,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584675621] [2021-11-22 22:49:01,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584675621] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 22:49:01,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143568051] [2021-11-22 22:49:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:49:01,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:49:01,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:49:01,825 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 22:49:01,828 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 22:49:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:49:02,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 3726 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 22:49:02,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 22:49:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 22:49:03,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 22:49:03,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143568051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:49:03,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 22:49:03,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-22 22:49:03,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507762022] [2021-11-22 22:49:03,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:49:03,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 22:49:03,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:49:03,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 22:49:03,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 22:49:03,139 INFO L87 Difference]: Start difference. First operand 10856 states and 15417 transitions. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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 22:49:06,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:49:06,038 INFO L93 Difference]: Finished difference Result 73252 states and 104563 transitions. [2021-11-22 22:49:06,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 22:49:06,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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 215 [2021-11-22 22:49:06,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:49:06,176 INFO L225 Difference]: With dead ends: 73252 [2021-11-22 22:49:06,176 INFO L226 Difference]: Without dead ends: 64220 [2021-11-22 22:49:06,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-22 22:49:06,203 INFO L933 BasicCegarLoop]: 13678 mSDtfsCounter, 26520 mSDsluCounter, 53192 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26524 SdHoareTripleChecker+Valid, 66870 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:49:06,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26524 Valid, 66870 Invalid, 291 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:49:06,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64220 states. [2021-11-22 22:49:06,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64220 to 10888. [2021-11-22 22:49:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10888 states, 10857 states have (on average 1.4179791839366307) internal successors, (15395), 10859 states have internal predecessors, (15395), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-22 22:49:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10888 states to 10888 states and 15450 transitions. [2021-11-22 22:49:06,945 INFO L78 Accepts]: Start accepts. Automaton has 10888 states and 15450 transitions. Word has length 215 [2021-11-22 22:49:06,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:49:06,945 INFO L470 AbstractCegarLoop]: Abstraction has 10888 states and 15450 transitions. [2021-11-22 22:49:06,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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 22:49:06,946 INFO L276 IsEmpty]: Start isEmpty. Operand 10888 states and 15450 transitions. [2021-11-22 22:49:06,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-22 22:49:06,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:49:06,960 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:49:06,986 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 22:49:07,183 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,SelfDestructingSolverStorable11 [2021-11-22 22:49:07,184 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 22:49:07,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:49:07,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1123802539, now seen corresponding path program 1 times [2021-11-22 22:49:07,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:49:07,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873895567] [2021-11-22 22:49:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:49:07,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:49:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:49:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 22:49:07,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:49:07,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873895567] [2021-11-22 22:49:07,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873895567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:49:07,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:49:07,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:49:07,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436925073] [2021-11-22 22:49:07,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:49:07,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:49:07,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:49:07,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:49:07,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:49:07,381 INFO L87 Difference]: Start difference. First operand 10888 states and 15450 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 22:49:08,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:49:08,602 INFO L93 Difference]: Finished difference Result 28512 states and 40473 transitions. [2021-11-22 22:49:08,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:49:08,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 215 [2021-11-22 22:49:08,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:49:08,639 INFO L225 Difference]: With dead ends: 28512 [2021-11-22 22:49:08,639 INFO L226 Difference]: Without dead ends: 19444 [2021-11-22 22:49:08,656 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 22:49:08,657 INFO L933 BasicCegarLoop]: 6798 mSDtfsCounter, 3586 mSDsluCounter, 10838 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3592 SdHoareTripleChecker+Valid, 17636 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:49:08,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3592 Valid, 17636 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:49:08,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19444 states. [2021-11-22 22:49:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19444 to 10888. [2021-11-22 22:49:09,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10888 states, 10857 states have (on average 1.4177949709864603) internal successors, (15393), 10859 states have internal predecessors, (15393), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-22 22:49:09,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10888 states to 10888 states and 15448 transitions. [2021-11-22 22:49:09,287 INFO L78 Accepts]: Start accepts. Automaton has 10888 states and 15448 transitions. Word has length 215 [2021-11-22 22:49:09,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:49:09,287 INFO L470 AbstractCegarLoop]: Abstraction has 10888 states and 15448 transitions. [2021-11-22 22:49:09,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 22:49:09,287 INFO L276 IsEmpty]: Start isEmpty. Operand 10888 states and 15448 transitions. [2021-11-22 22:49:09,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-22 22:49:09,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:49:09,298 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:49:09,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 22:49:09,299 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 22:49:09,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:49:09,299 INFO L85 PathProgramCache]: Analyzing trace with hash 661828409, now seen corresponding path program 1 times [2021-11-22 22:49:09,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:49:09,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305877044] [2021-11-22 22:49:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:49:09,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:49:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:49:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 22:49:09,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:49:09,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305877044] [2021-11-22 22:49:09,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305877044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:49:09,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:49:09,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 22:49:09,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872555185] [2021-11-22 22:49:09,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:49:09,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 22:49:09,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:49:09,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 22:49:09,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 22:49:09,532 INFO L87 Difference]: Start difference. First operand 10888 states and 15448 transitions. Second operand has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 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 22:49:12,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:49:12,833 INFO L93 Difference]: Finished difference Result 59634 states and 85011 transitions. [2021-11-22 22:49:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 22:49:12,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 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 217 [2021-11-22 22:49:12,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:49:12,924 INFO L225 Difference]: With dead ends: 59634 [2021-11-22 22:49:12,925 INFO L226 Difference]: Without dead ends: 50570 [2021-11-22 22:49:12,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-22 22:49:12,947 INFO L933 BasicCegarLoop]: 6995 mSDtfsCounter, 34503 mSDsluCounter, 42375 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34509 SdHoareTripleChecker+Valid, 49370 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:49:12,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34509 Valid, 49370 Invalid, 285 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:49:12,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50570 states. [2021-11-22 22:49:13,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50570 to 10898. [2021-11-22 22:49:13,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10898 states, 10867 states have (on average 1.4174105088800957) internal successors, (15403), 10869 states have internal predecessors, (15403), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-22 22:49:13,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10898 states to 10898 states and 15458 transitions. [2021-11-22 22:49:13,805 INFO L78 Accepts]: Start accepts. Automaton has 10898 states and 15458 transitions. Word has length 217 [2021-11-22 22:49:13,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:49:13,806 INFO L470 AbstractCegarLoop]: Abstraction has 10898 states and 15458 transitions. [2021-11-22 22:49:13,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 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 22:49:13,806 INFO L276 IsEmpty]: Start isEmpty. Operand 10898 states and 15458 transitions. [2021-11-22 22:49:13,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-22 22:49:13,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:49:13,821 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:49:13,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 22:49:13,821 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 22:49:13,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:49:13,821 INFO L85 PathProgramCache]: Analyzing trace with hash 302522205, now seen corresponding path program 1 times [2021-11-22 22:49:13,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:49:13,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120850726] [2021-11-22 22:49:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:49:13,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:49:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:49:14,000 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 22:49:14,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:49:14,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120850726] [2021-11-22 22:49:14,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120850726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:49:14,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:49:14,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:49:14,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999492033] [2021-11-22 22:49:14,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:49:14,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:49:14,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:49:14,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:49:14,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:49:14,003 INFO L87 Difference]: Start difference. First operand 10898 states and 15458 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 22:49:15,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:49:15,309 INFO L93 Difference]: Finished difference Result 27306 states and 38815 transitions. [2021-11-22 22:49:15,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:49:15,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 219 [2021-11-22 22:49:15,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:49:15,347 INFO L225 Difference]: With dead ends: 27306 [2021-11-22 22:49:15,347 INFO L226 Difference]: Without dead ends: 18232 [2021-11-22 22:49:15,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 22:49:15,363 INFO L933 BasicCegarLoop]: 6868 mSDtfsCounter, 5559 mSDsluCounter, 8173 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5559 SdHoareTripleChecker+Valid, 15041 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:49:15,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5559 Valid, 15041 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:49:15,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18232 states. [2021-11-22 22:49:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18232 to 10902. [2021-11-22 22:49:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10902 states, 10871 states have (on average 1.4172569220862845) internal successors, (15407), 10873 states have internal predecessors, (15407), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-22 22:49:16,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10902 states to 10902 states and 15462 transitions. [2021-11-22 22:49:16,112 INFO L78 Accepts]: Start accepts. Automaton has 10902 states and 15462 transitions. Word has length 219 [2021-11-22 22:49:16,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:49:16,112 INFO L470 AbstractCegarLoop]: Abstraction has 10902 states and 15462 transitions. [2021-11-22 22:49:16,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 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 22:49:16,112 INFO L276 IsEmpty]: Start isEmpty. Operand 10902 states and 15462 transitions. [2021-11-22 22:49:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-22 22:49:16,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:49:16,122 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:49:16,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 22:49:16,123 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 22:49:16,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:49:16,123 INFO L85 PathProgramCache]: Analyzing trace with hash 953805688, now seen corresponding path program 1 times [2021-11-22 22:49:16,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:49:16,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562559306] [2021-11-22 22:49:16,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:49:16,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:49:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:49:16,291 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 22:49:16,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:49:16,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562559306] [2021-11-22 22:49:16,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562559306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:49:16,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:49:16,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:49:16,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347681716] [2021-11-22 22:49:16,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:49:16,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:49:16,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:49:16,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:49:16,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:49:16,293 INFO L87 Difference]: Start difference. First operand 10902 states and 15462 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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 22:49:19,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:49:19,126 INFO L93 Difference]: Finished difference Result 45536 states and 64689 transitions. [2021-11-22 22:49:19,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 22:49:19,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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 227 [2021-11-22 22:49:19,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:49:19,221 INFO L225 Difference]: With dead ends: 45536 [2021-11-22 22:49:19,221 INFO L226 Difference]: Without dead ends: 36458 [2021-11-22 22:49:19,237 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 22:49:19,240 INFO L933 BasicCegarLoop]: 11067 mSDtfsCounter, 10088 mSDsluCounter, 13824 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10100 SdHoareTripleChecker+Valid, 24891 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:49:19,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10100 Valid, 24891 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:49:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36458 states. [2021-11-22 22:49:20,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36458 to 10918. [2021-11-22 22:49:20,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10918 states, 10887 states have (on average 1.4170111141728667) internal successors, (15427), 10889 states have internal predecessors, (15427), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-22 22:49:20,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10918 states to 10918 states and 15482 transitions. [2021-11-22 22:49:20,165 INFO L78 Accepts]: Start accepts. Automaton has 10918 states and 15482 transitions. Word has length 227 [2021-11-22 22:49:20,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:49:20,165 INFO L470 AbstractCegarLoop]: Abstraction has 10918 states and 15482 transitions. [2021-11-22 22:49:20,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 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 22:49:20,165 INFO L276 IsEmpty]: Start isEmpty. Operand 10918 states and 15482 transitions. [2021-11-22 22:49:20,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-22 22:49:20,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:49:20,175 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:49:20,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 22:49:20,176 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 22:49:20,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:49:20,176 INFO L85 PathProgramCache]: Analyzing trace with hash -71817252, now seen corresponding path program 1 times [2021-11-22 22:49:20,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:49:20,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673685638] [2021-11-22 22:49:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:49:20,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:49:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:49:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 22:49:20,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:49:20,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673685638] [2021-11-22 22:49:20,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673685638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:49:20,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:49:20,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 22:49:20,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032095687] [2021-11-22 22:49:20,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:49:20,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 22:49:20,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:49:20,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 22:49:20,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:49:20,355 INFO L87 Difference]: Start difference. First operand 10918 states and 15482 transitions. Second operand has 5 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 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 22:49:23,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:49:23,607 INFO L93 Difference]: Finished difference Result 45532 states and 64681 transitions. [2021-11-22 22:49:23,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 22:49:23,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 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 229 [2021-11-22 22:49:23,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:49:23,667 INFO L225 Difference]: With dead ends: 45532 [2021-11-22 22:49:23,667 INFO L226 Difference]: Without dead ends: 36438 [2021-11-22 22:49:23,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 22:49:23,696 INFO L933 BasicCegarLoop]: 9696 mSDtfsCounter, 11439 mSDsluCounter, 23442 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11451 SdHoareTripleChecker+Valid, 33138 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:49:23,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11451 Valid, 33138 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:49:23,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36438 states. [2021-11-22 22:49:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36438 to 10924. [2021-11-22 22:49:24,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10924 states, 10893 states have (on average 1.4167814192600752) internal successors, (15433), 10895 states have internal predecessors, (15433), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-22 22:49:24,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10924 states to 10924 states and 15488 transitions. [2021-11-22 22:49:24,788 INFO L78 Accepts]: Start accepts. Automaton has 10924 states and 15488 transitions. Word has length 229 [2021-11-22 22:49:24,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:49:24,789 INFO L470 AbstractCegarLoop]: Abstraction has 10924 states and 15488 transitions. [2021-11-22 22:49:24,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.2) internal successors, (221), 5 states have internal predecessors, (221), 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 22:49:24,789 INFO L276 IsEmpty]: Start isEmpty. Operand 10924 states and 15488 transitions. [2021-11-22 22:49:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-22 22:49:24,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:49:24,798 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:49:24,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 22:49:24,798 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 22:49:24,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:49:24,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1779360800, now seen corresponding path program 1 times [2021-11-22 22:49:24,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:49:24,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506869376] [2021-11-22 22:49:24,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:49:24,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:49:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:49:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-22 22:49:25,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:49:25,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506869376] [2021-11-22 22:49:25,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506869376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:49:25,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:49:25,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:49:25,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573802096] [2021-11-22 22:49:25,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:49:25,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:49:25,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:49:25,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:49:25,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:49:25,029 INFO L87 Difference]: Start difference. First operand 10924 states and 15488 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 22:49:25,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:49:25,898 INFO L93 Difference]: Finished difference Result 21725 states and 30829 transitions. [2021-11-22 22:49:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:49:25,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 231 [2021-11-22 22:49:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:49:25,916 INFO L225 Difference]: With dead ends: 21725 [2021-11-22 22:49:25,917 INFO L226 Difference]: Without dead ends: 10925 [2021-11-22 22:49:25,931 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 22:49:25,932 INFO L933 BasicCegarLoop]: 4087 mSDtfsCounter, 0 mSDsluCounter, 4058 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8145 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:49:25,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8145 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:49:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10925 states. [2021-11-22 22:49:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10925 to 10925. [2021-11-22 22:49:26,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10925 states, 10894 states have (on average 1.4167431613732329) internal successors, (15434), 10896 states have internal predecessors, (15434), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-22 22:49:26,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10925 states to 10925 states and 15489 transitions. [2021-11-22 22:49:26,875 INFO L78 Accepts]: Start accepts. Automaton has 10925 states and 15489 transitions. Word has length 231 [2021-11-22 22:49:26,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:49:26,888 INFO L470 AbstractCegarLoop]: Abstraction has 10925 states and 15489 transitions. [2021-11-22 22:49:26,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 22:49:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 10925 states and 15489 transitions. [2021-11-22 22:49:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-22 22:49:26,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:49:26,901 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:49:26,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 22:49:26,902 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 22:49:26,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:49:26,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1875226117, now seen corresponding path program 1 times [2021-11-22 22:49:26,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:49:26,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053093663] [2021-11-22 22:49:26,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:49:26,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:49:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:49:27,160 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-22 22:49:27,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:49:27,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053093663] [2021-11-22 22:49:27,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053093663] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 22:49:27,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992509862] [2021-11-22 22:49:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:49:27,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:49:27,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:49:27,162 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 22:49:27,163 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 22:49:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:49:28,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 3906 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 22:49:28,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 22:49:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-22 22:49:29,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 22:49:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-22 22:49:29,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992509862] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 22:49:29,578 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 22:49:29,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 22:49:29,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494346864] [2021-11-22 22:49:29,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 22:49:29,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 22:49:29,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:49:29,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 22:49:29,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-22 22:49:29,579 INFO L87 Difference]: Start difference. First operand 10925 states and 15489 transitions. Second operand has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 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 22:49:30,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:49:30,663 INFO L93 Difference]: Finished difference Result 21740 states and 30858 transitions. [2021-11-22 22:49:30,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 22:49:30,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 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 232 [2021-11-22 22:49:30,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:49:30,680 INFO L225 Difference]: With dead ends: 21740 [2021-11-22 22:49:30,680 INFO L226 Difference]: Without dead ends: 10940 [2021-11-22 22:49:30,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-22 22:49:30,696 INFO L933 BasicCegarLoop]: 4084 mSDtfsCounter, 3622 mSDsluCounter, 8104 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3628 SdHoareTripleChecker+Valid, 12188 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:49:30,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3628 Valid, 12188 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:49:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10940 states. [2021-11-22 22:49:31,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10940 to 10940. [2021-11-22 22:49:31,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10940 states, 10909 states have (on average 1.4161701347511229) internal successors, (15449), 10911 states have internal predecessors, (15449), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-22 22:49:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10940 states to 10940 states and 15504 transitions. [2021-11-22 22:49:31,738 INFO L78 Accepts]: Start accepts. Automaton has 10940 states and 15504 transitions. Word has length 232 [2021-11-22 22:49:31,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:49:31,739 INFO L470 AbstractCegarLoop]: Abstraction has 10940 states and 15504 transitions. [2021-11-22 22:49:31,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 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 22:49:31,739 INFO L276 IsEmpty]: Start isEmpty. Operand 10940 states and 15504 transitions. [2021-11-22 22:49:31,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-22 22:49:31,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:49:31,748 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:49:31,774 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 22:49:31,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:49:31,972 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 22:49:31,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:49:31,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2040220320, now seen corresponding path program 2 times [2021-11-22 22:49:31,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:49:31,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473208447] [2021-11-22 22:49:31,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:49:31,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:49:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:49:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-22 22:49:32,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:49:32,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473208447] [2021-11-22 22:49:32,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473208447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:49:32,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:49:32,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 22:49:32,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196702985] [2021-11-22 22:49:32,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:49:32,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 22:49:32,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:49:32,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 22:49:32,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-22 22:49:32,467 INFO L87 Difference]: Start difference. First operand 10940 states and 15504 transitions. Second operand has 10 states, 10 states have (on average 22.4) internal successors, (224), 10 states have internal predecessors, (224), 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 22:49:40,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:49:40,574 INFO L93 Difference]: Finished difference Result 63150 states and 89935 transitions. [2021-11-22 22:49:40,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-22 22:49:40,574 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.4) internal successors, (224), 10 states have internal predecessors, (224), 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 235 [2021-11-22 22:49:40,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:49:40,782 INFO L225 Difference]: With dead ends: 63150 [2021-11-22 22:49:40,795 INFO L226 Difference]: Without dead ends: 54026 [2021-11-22 22:49:40,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=420, Invalid=1140, Unknown=0, NotChecked=0, Total=1560 [2021-11-22 22:49:40,847 INFO L933 BasicCegarLoop]: 16646 mSDtfsCounter, 69793 mSDsluCounter, 47028 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69793 SdHoareTripleChecker+Valid, 63674 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:49:40,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69793 Valid, 63674 Invalid, 1136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [472 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 22:49:40,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54026 states. [2021-11-22 22:49:42,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54026 to 15492. [2021-11-22 22:49:42,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15492 states, 15446 states have (on average 1.4150589149294315) internal successors, (21857), 15449 states have internal predecessors, (21857), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-22 22:49:42,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15492 states to 15492 states and 21934 transitions. [2021-11-22 22:49:42,743 INFO L78 Accepts]: Start accepts. Automaton has 15492 states and 21934 transitions. Word has length 235 [2021-11-22 22:49:42,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:49:42,743 INFO L470 AbstractCegarLoop]: Abstraction has 15492 states and 21934 transitions. [2021-11-22 22:49:42,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.4) internal successors, (224), 10 states have internal predecessors, (224), 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 22:49:42,744 INFO L276 IsEmpty]: Start isEmpty. Operand 15492 states and 21934 transitions. [2021-11-22 22:49:42,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-22 22:49:42,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:49:42,760 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:49:42,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 22:49:42,761 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 22:49:42,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:49:42,761 INFO L85 PathProgramCache]: Analyzing trace with hash 619610505, now seen corresponding path program 1 times [2021-11-22 22:49:42,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:49:42,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897983188] [2021-11-22 22:49:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:49:42,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:49:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:49:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-22 22:49:43,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:49:43,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897983188] [2021-11-22 22:49:43,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897983188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:49:43,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:49:43,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-22 22:49:43,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002925788] [2021-11-22 22:49:43,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:49:43,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 22:49:43,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:49:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 22:49:43,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-22 22:49:43,580 INFO L87 Difference]: Start difference. First operand 15492 states and 21934 transitions. Second operand has 18 states, 18 states have (on average 13.166666666666666) internal successors, (237), 18 states have internal predecessors, (237), 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 22:51:57,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:51:57,709 INFO L93 Difference]: Finished difference Result 121075 states and 173023 transitions. [2021-11-22 22:51:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2021-11-22 22:51:57,710 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.166666666666666) internal successors, (237), 18 states have internal predecessors, (237), 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 248 [2021-11-22 22:51:57,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:51:57,931 INFO L225 Difference]: With dead ends: 121075 [2021-11-22 22:51:57,932 INFO L226 Difference]: Without dead ends: 107411 [2021-11-22 22:51:57,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14786 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=6008, Invalid=30282, Unknown=0, NotChecked=0, Total=36290 [2021-11-22 22:51:57,980 INFO L933 BasicCegarLoop]: 29273 mSDtfsCounter, 71797 mSDsluCounter, 176593 mSDsCounter, 0 mSdLazyCounter, 16211 mSolverCounterSat, 1496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71797 SdHoareTripleChecker+Valid, 205866 SdHoareTripleChecker+Invalid, 17707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1496 IncrementalHoareTripleChecker+Valid, 16211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:51:57,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71797 Valid, 205866 Invalid, 17707 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1496 Valid, 16211 Invalid, 0 Unknown, 0 Unchecked, 112.1s Time] [2021-11-22 22:51:58,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107411 states. [2021-11-22 22:52:02,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107411 to 26800. [2021-11-22 22:52:02,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26800 states, 26754 states have (on average 1.4196381849443074) internal successors, (37981), 26757 states have internal predecessors, (37981), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-22 22:52:02,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26800 states to 26800 states and 38058 transitions. [2021-11-22 22:52:02,288 INFO L78 Accepts]: Start accepts. Automaton has 26800 states and 38058 transitions. Word has length 248 [2021-11-22 22:52:02,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:52:02,288 INFO L470 AbstractCegarLoop]: Abstraction has 26800 states and 38058 transitions. [2021-11-22 22:52:02,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.166666666666666) internal successors, (237), 18 states have internal predecessors, (237), 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 22:52:02,288 INFO L276 IsEmpty]: Start isEmpty. Operand 26800 states and 38058 transitions. [2021-11-22 22:52:02,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-22 22:52:02,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:52:02,299 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:52:02,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 22:52:02,300 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 22:52:02,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:52:02,300 INFO L85 PathProgramCache]: Analyzing trace with hash 371464011, now seen corresponding path program 1 times [2021-11-22 22:52:02,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:52:02,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282442110] [2021-11-22 22:52:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:52:02,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:52:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:52:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-22 22:52:02,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:52:02,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282442110] [2021-11-22 22:52:02,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282442110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:52:02,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:52:02,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 22:52:02,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702158766] [2021-11-22 22:52:02,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:52:02,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 22:52:02,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:52:02,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 22:52:02,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 22:52:02,715 INFO L87 Difference]: Start difference. First operand 26800 states and 38058 transitions. Second operand has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 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 22:52:55,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:52:55,548 INFO L93 Difference]: Finished difference Result 120442 states and 172755 transitions. [2021-11-22 22:52:55,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 22:52:55,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 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 248 [2021-11-22 22:52:55,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:52:55,729 INFO L225 Difference]: With dead ends: 120442 [2021-11-22 22:52:55,730 INFO L226 Difference]: Without dead ends: 95428 [2021-11-22 22:52:55,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-22 22:52:55,771 INFO L933 BasicCegarLoop]: 7531 mSDtfsCounter, 13699 mSDsluCounter, 22392 mSDsCounter, 0 mSdLazyCounter, 4156 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13699 SdHoareTripleChecker+Valid, 29923 SdHoareTripleChecker+Invalid, 4333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 4156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.3s IncrementalHoareTripleChecker+Time [2021-11-22 22:52:55,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13699 Valid, 29923 Invalid, 4333 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [177 Valid, 4156 Invalid, 0 Unknown, 0 Unchecked, 37.3s Time] [2021-11-22 22:52:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95428 states. [2021-11-22 22:53:00,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95428 to 26846. [2021-11-22 22:53:00,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26846 states, 26800 states have (on average 1.4194029850746268) internal successors, (38040), 26803 states have internal predecessors, (38040), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-22 22:53:00,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26846 states to 26846 states and 38117 transitions. [2021-11-22 22:53:00,732 INFO L78 Accepts]: Start accepts. Automaton has 26846 states and 38117 transitions. Word has length 248 [2021-11-22 22:53:00,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:53:00,733 INFO L470 AbstractCegarLoop]: Abstraction has 26846 states and 38117 transitions. [2021-11-22 22:53:00,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 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 22:53:00,733 INFO L276 IsEmpty]: Start isEmpty. Operand 26846 states and 38117 transitions. [2021-11-22 22:53:00,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-22 22:53:00,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:53:00,772 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:53:00,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 22:53:00,772 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 22:53:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:53:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1848747020, now seen corresponding path program 1 times [2021-11-22 22:53:00,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:53:00,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242296668] [2021-11-22 22:53:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:53:00,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:53:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-22 22:53:00,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:53:00,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242296668] [2021-11-22 22:53:00,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242296668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:53:00,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:53:00,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:53:00,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780289076] [2021-11-22 22:53:00,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:53:00,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:53:00,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:53:00,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:53:00,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:53:00,950 INFO L87 Difference]: Start difference. First operand 26846 states and 38117 transitions. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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 22:53:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:53:13,324 INFO L93 Difference]: Finished difference Result 97317 states and 138679 transitions. [2021-11-22 22:53:13,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 22:53:13,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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 258 [2021-11-22 22:53:13,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:53:13,451 INFO L225 Difference]: With dead ends: 97317 [2021-11-22 22:53:13,451 INFO L226 Difference]: Without dead ends: 72299 [2021-11-22 22:53:13,486 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 22:53:13,486 INFO L933 BasicCegarLoop]: 13074 mSDtfsCounter, 7191 mSDsluCounter, 13008 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7201 SdHoareTripleChecker+Valid, 26082 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:53:13,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7201 Valid, 26082 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:53:13,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72299 states. [2021-11-22 22:53:18,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72299 to 26836. [2021-11-22 22:53:18,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26836 states, 26790 states have (on average 1.4194102276969018) internal successors, (38026), 26793 states have internal predecessors, (38026), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-22 22:53:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26836 states to 26836 states and 38103 transitions. [2021-11-22 22:53:18,298 INFO L78 Accepts]: Start accepts. Automaton has 26836 states and 38103 transitions. Word has length 258 [2021-11-22 22:53:18,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:53:18,299 INFO L470 AbstractCegarLoop]: Abstraction has 26836 states and 38103 transitions. [2021-11-22 22:53:18,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 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 22:53:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 26836 states and 38103 transitions. [2021-11-22 22:53:18,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-11-22 22:53:18,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:53:18,312 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:53:18,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 22:53:18,314 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:53:18,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:53:18,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1847854004, now seen corresponding path program 1 times [2021-11-22 22:53:18,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:53:18,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4197302] [2021-11-22 22:53:18,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:53:18,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:53:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-22 22:53:18,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:53:18,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4197302] [2021-11-22 22:53:18,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4197302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:53:18,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:53:18,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 22:53:18,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049756751] [2021-11-22 22:53:18,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:53:18,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 22:53:18,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:53:18,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 22:53:18,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 22:53:18,609 INFO L87 Difference]: Start difference. First operand 26836 states and 38103 transitions. Second operand has 6 states, 6 states have (on average 42.166666666666664) internal successors, (253), 6 states have internal predecessors, (253), 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 22:53:31,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:53:31,850 INFO L93 Difference]: Finished difference Result 97546 states and 138873 transitions. [2021-11-22 22:53:31,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 22:53:31,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.166666666666664) internal successors, (253), 6 states have internal predecessors, (253), 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 264 [2021-11-22 22:53:31,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:53:31,986 INFO L225 Difference]: With dead ends: 97546 [2021-11-22 22:53:31,987 INFO L226 Difference]: Without dead ends: 72538 [2021-11-22 22:53:32,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-22 22:53:32,031 INFO L933 BasicCegarLoop]: 6888 mSDtfsCounter, 12025 mSDsluCounter, 24569 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12031 SdHoareTripleChecker+Valid, 31457 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:53:32,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12031 Valid, 31457 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:53:32,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72538 states. [2021-11-22 22:53:37,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72538 to 26864. [2021-11-22 22:53:37,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26864 states, 26818 states have (on average 1.4189723320158103) internal successors, (38054), 26821 states have internal predecessors, (38054), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-22 22:53:37,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26864 states to 26864 states and 38131 transitions. [2021-11-22 22:53:37,092 INFO L78 Accepts]: Start accepts. Automaton has 26864 states and 38131 transitions. Word has length 264 [2021-11-22 22:53:37,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:53:37,092 INFO L470 AbstractCegarLoop]: Abstraction has 26864 states and 38131 transitions. [2021-11-22 22:53:37,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.166666666666664) internal successors, (253), 6 states have internal predecessors, (253), 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 22:53:37,092 INFO L276 IsEmpty]: Start isEmpty. Operand 26864 states and 38131 transitions. [2021-11-22 22:53:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-11-22 22:53:37,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:53:37,107 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:53:37,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 22:53:37,107 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:53:37,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:53:37,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1077431056, now seen corresponding path program 1 times [2021-11-22 22:53:37,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:53:37,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415677259] [2021-11-22 22:53:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:53:37,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:53:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:53:37,320 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-22 22:53:37,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:53:37,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415677259] [2021-11-22 22:53:37,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415677259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:53:37,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:53:37,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 22:53:37,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037899514] [2021-11-22 22:53:37,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:53:37,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 22:53:37,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:53:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 22:53:37,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:53:37,323 INFO L87 Difference]: Start difference. First operand 26864 states and 38131 transitions. Second operand has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 22:53:55,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:53:55,132 INFO L93 Difference]: Finished difference Result 121748 states and 173332 transitions. [2021-11-22 22:53:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 22:53:55,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 266 [2021-11-22 22:53:55,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:53:55,309 INFO L225 Difference]: With dead ends: 121748 [2021-11-22 22:53:55,309 INFO L226 Difference]: Without dead ends: 96712 [2021-11-22 22:53:55,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 22:53:55,351 INFO L933 BasicCegarLoop]: 9703 mSDtfsCounter, 10736 mSDsluCounter, 24060 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10746 SdHoareTripleChecker+Valid, 33763 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:53:55,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10746 Valid, 33763 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:53:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96712 states. [2021-11-22 22:54:00,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96712 to 26885. [2021-11-22 22:54:00,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26885 states, 26839 states have (on average 1.4186445098550617) internal successors, (38075), 26842 states have internal predecessors, (38075), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-22 22:54:00,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26885 states to 26885 states and 38152 transitions. [2021-11-22 22:54:00,704 INFO L78 Accepts]: Start accepts. Automaton has 26885 states and 38152 transitions. Word has length 266 [2021-11-22 22:54:00,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:54:00,704 INFO L470 AbstractCegarLoop]: Abstraction has 26885 states and 38152 transitions. [2021-11-22 22:54:00,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 22:54:00,705 INFO L276 IsEmpty]: Start isEmpty. Operand 26885 states and 38152 transitions. [2021-11-22 22:54:00,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-22 22:54:00,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:54:00,719 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:54:00,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 22:54:00,720 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:54:00,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:54:00,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2129194860, now seen corresponding path program 1 times [2021-11-22 22:54:00,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:54:00,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406337215] [2021-11-22 22:54:00,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:54:00,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:54:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-22 22:54:01,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:54:01,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406337215] [2021-11-22 22:54:01,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406337215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:54:01,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:54:01,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 22:54:01,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75297726] [2021-11-22 22:54:01,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:54:01,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 22:54:01,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:54:01,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 22:54:01,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 22:54:01,052 INFO L87 Difference]: Start difference. First operand 26885 states and 38152 transitions. Second operand has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 5 states have internal predecessors, (257), 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 22:54:24,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:54:24,095 INFO L93 Difference]: Finished difference Result 59262 states and 84179 transitions. [2021-11-22 22:54:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 22:54:24,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 5 states have internal predecessors, (257), 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 268 [2021-11-22 22:54:24,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:54:24,149 INFO L225 Difference]: With dead ends: 59262 [2021-11-22 22:54:24,150 INFO L226 Difference]: Without dead ends: 34205 [2021-11-22 22:54:24,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 22:54:24,173 INFO L933 BasicCegarLoop]: 7640 mSDtfsCounter, 9568 mSDsluCounter, 19598 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9568 SdHoareTripleChecker+Valid, 27238 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2021-11-22 22:54:24,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9568 Valid, 27238 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2021-11-22 22:54:24,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34205 states. [2021-11-22 22:54:28,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34205 to 23051. [2021-11-22 22:54:28,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23051 states, 23005 states have (on average 1.4183003694848946) internal successors, (32628), 23008 states have internal predecessors, (32628), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-22 22:54:28,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23051 states to 23051 states and 32705 transitions. [2021-11-22 22:54:28,360 INFO L78 Accepts]: Start accepts. Automaton has 23051 states and 32705 transitions. Word has length 268 [2021-11-22 22:54:28,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:54:28,360 INFO L470 AbstractCegarLoop]: Abstraction has 23051 states and 32705 transitions. [2021-11-22 22:54:28,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 5 states have internal predecessors, (257), 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 22:54:28,360 INFO L276 IsEmpty]: Start isEmpty. Operand 23051 states and 32705 transitions. [2021-11-22 22:54:28,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-22 22:54:28,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:54:28,373 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:54:28,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 22:54:28,373 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:54:28,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:54:28,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1499535691, now seen corresponding path program 1 times [2021-11-22 22:54:28,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:54:28,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222680007] [2021-11-22 22:54:28,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:54:28,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:54:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-22 22:54:28,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:54:28,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222680007] [2021-11-22 22:54:28,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222680007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:54:28,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:54:28,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 22:54:28,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864926857] [2021-11-22 22:54:28,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:54:28,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 22:54:28,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:54:28,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 22:54:28,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 22:54:28,840 INFO L87 Difference]: Start difference. First operand 23051 states and 32705 transitions. Second operand has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 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 22:54:37,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:54:37,695 INFO L93 Difference]: Finished difference Result 60418 states and 85762 transitions. [2021-11-22 22:54:37,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 22:54:37,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 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 271 [2021-11-22 22:54:37,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:54:37,762 INFO L225 Difference]: With dead ends: 60418 [2021-11-22 22:54:37,762 INFO L226 Difference]: Without dead ends: 39195 [2021-11-22 22:54:37,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-22 22:54:37,784 INFO L933 BasicCegarLoop]: 13697 mSDtfsCounter, 18285 mSDsluCounter, 37810 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18295 SdHoareTripleChecker+Valid, 51507 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 22:54:37,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18295 Valid, 51507 Invalid, 225 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 22:54:37,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39195 states. [2021-11-22 22:54:41,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39195 to 19268. [2021-11-22 22:54:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19268 states, 19222 states have (on average 1.4165019248777442) internal successors, (27228), 19225 states have internal predecessors, (27228), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-22 22:54:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19268 states to 19268 states and 27305 transitions. [2021-11-22 22:54:41,584 INFO L78 Accepts]: Start accepts. Automaton has 19268 states and 27305 transitions. Word has length 271 [2021-11-22 22:54:41,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:54:41,585 INFO L470 AbstractCegarLoop]: Abstraction has 19268 states and 27305 transitions. [2021-11-22 22:54:41,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.333333333333336) internal successors, (260), 6 states have internal predecessors, (260), 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 22:54:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 19268 states and 27305 transitions. [2021-11-22 22:54:41,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-11-22 22:54:41,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:54:41,601 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:54:41,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 22:54:41,602 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:54:41,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:54:41,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1828182808, now seen corresponding path program 1 times [2021-11-22 22:54:41,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:54:41,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292485391] [2021-11-22 22:54:41,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:54:41,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:54:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:41,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-11-22 22:54:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-22 22:54:41,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:54:41,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292485391] [2021-11-22 22:54:41,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292485391] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 22:54:41,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723366691] [2021-11-22 22:54:41,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:54:41,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:54:41,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:54:41,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 22:54:41,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 22:54:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:54:43,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 4708 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 22:54:43,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 22:54:43,348 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-22 22:54:43,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 22:54:43,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723366691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:54:43,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 22:54:43,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2021-11-22 22:54:43,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987285063] [2021-11-22 22:54:43,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:54:43,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 22:54:43,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:54:43,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 22:54:43,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 22:54:43,350 INFO L87 Difference]: Start difference. First operand 19268 states and 27305 transitions. Second operand has 6 states, 6 states have (on average 45.833333333333336) internal successors, (275), 6 states have internal predecessors, (275), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 22:55:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:55:02,857 INFO L93 Difference]: Finished difference Result 106347 states and 151225 transitions. [2021-11-22 22:55:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 22:55:02,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 45.833333333333336) internal successors, (275), 6 states have internal predecessors, (275), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 288 [2021-11-22 22:55:02,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:55:03,019 INFO L225 Difference]: With dead ends: 106347 [2021-11-22 22:55:03,019 INFO L226 Difference]: Without dead ends: 88907 [2021-11-22 22:55:03,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-11-22 22:55:03,048 INFO L933 BasicCegarLoop]: 16453 mSDtfsCounter, 15244 mSDsluCounter, 39597 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15244 SdHoareTripleChecker+Valid, 56050 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:55:03,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15244 Valid, 56050 Invalid, 213 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:55:03,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88907 states. [2021-11-22 22:55:07,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88907 to 19313. [2021-11-22 22:55:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19313 states, 19267 states have (on average 1.4156329475268594) internal successors, (27275), 19270 states have internal predecessors, (27275), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (44), 33 states have call predecessors, (44), 33 states have call successors, (44) [2021-11-22 22:55:07,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19313 states to 19313 states and 27352 transitions. [2021-11-22 22:55:07,400 INFO L78 Accepts]: Start accepts. Automaton has 19313 states and 27352 transitions. Word has length 288 [2021-11-22 22:55:07,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:55:07,401 INFO L470 AbstractCegarLoop]: Abstraction has 19313 states and 27352 transitions. [2021-11-22 22:55:07,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.833333333333336) internal successors, (275), 6 states have internal predecessors, (275), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 22:55:07,401 INFO L276 IsEmpty]: Start isEmpty. Operand 19313 states and 27352 transitions. [2021-11-22 22:55:07,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-11-22 22:55:07,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:55:07,415 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:55:07,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 22:55:07,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:55:07,641 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-22 22:55:07,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:55:07,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2044082662, now seen corresponding path program 1 times [2021-11-22 22:55:07,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:55:07,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697751589] [2021-11-22 22:55:07,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:55:07,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:55:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:55:19,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-11-22 22:55:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:55:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-22 22:55:19,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:55:19,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697751589] [2021-11-22 22:55:19,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697751589] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 22:55:19,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156318802] [2021-11-22 22:55:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:55:19,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:55:19,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:55:19,294 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 22:55:19,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 22:56:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:56:18,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 4703 conjuncts, 173 conjunts are in the unsatisfiable core [2021-11-22 22:56:18,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 22:56:18,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 22:56:19,059 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 22:56:19,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-22 22:56:19,147 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 22:56:19,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-11-22 22:56:19,171 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 22:56:19,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-22 22:56:19,193 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 22:56:19,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-11-22 22:56:19,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 22:56:19,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-22 22:56:19,335 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 22:56:19,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 19 [2021-11-22 22:56:19,581 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 22:56:19,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-22 22:56:19,634 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 22:56:19,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 22:56:20,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 22:56:20,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 22:56:20,406 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-11-22 22:56:20,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 187 [2021-11-22 22:56:20,447 INFO L354 Elim1Store]: treesize reduction 86, result has 29.5 percent of original size [2021-11-22 22:56:20,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 218 [2021-11-22 22:56:20,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 224 treesize of output 223 [2021-11-22 22:56:20,477 INFO L354 Elim1Store]: treesize reduction 62, result has 33.3 percent of original size [2021-11-22 22:56:20,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 274 treesize of output 275 [2021-11-22 22:56:20,526 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 22:56:20,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2021-11-22 22:56:20,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-22 22:56:20,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 34 [2021-11-22 22:56:20,662 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 22:56:20,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 66 [2021-11-22 22:56:20,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 10 [2021-11-22 22:56:21,399 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-11-22 22:56:21,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 38 [2021-11-22 22:56:21,404 INFO L354 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2021-11-22 22:56:21,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 25 [2021-11-22 22:56:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-22 22:56:21,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 22:56:21,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156318802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:56:21,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 22:56:21,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [29] total 47 [2021-11-22 22:56:21,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397671664] [2021-11-22 22:56:21,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:56:21,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-22 22:56:21,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:56:21,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-22 22:56:21,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=2026, Unknown=0, NotChecked=0, Total=2162 [2021-11-22 22:56:21,647 INFO L87 Difference]: Start difference. First operand 19313 states and 27352 transitions. Second operand has 26 states, 26 states have (on average 10.576923076923077) internal successors, (275), 26 states have internal predecessors, (275), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)