./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.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-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.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 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 20:59:43,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 20:59:43,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 20:59:43,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 20:59:43,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 20:59:43,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 20:59:43,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 20:59:43,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 20:59:43,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 20:59:43,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 20:59:43,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 20:59:43,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 20:59:43,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 20:59:43,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 20:59:43,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 20:59:43,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 20:59:43,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 20:59:43,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 20:59:43,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 20:59:43,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 20:59:43,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 20:59:43,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 20:59:43,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 20:59:43,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 20:59:43,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 20:59:43,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 20:59:43,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 20:59:43,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 20:59:43,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 20:59:43,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 20:59:43,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 20:59:43,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 20:59:43,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 20:59:43,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 20:59:43,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 20:59:43,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 20:59:43,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 20:59:43,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 20:59:43,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 20:59:43,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 20:59:43,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 20:59:43,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 20:59:43,728 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 20:59:43,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 20:59:43,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 20:59:43,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 20:59:43,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 20:59:43,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 20:59:43,730 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 20:59:43,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 20:59:43,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 20:59:43,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 20:59:43,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 20:59:43,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 20:59:43,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 20:59:43,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 20:59:43,731 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 20:59:43,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 20:59:43,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 20:59:43,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 20:59:43,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 20:59:43,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:59:43,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 20:59:43,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 20:59:43,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 20:59:43,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 20:59:43,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 20:59:43,732 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 20:59:43,733 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 20:59:43,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 20:59:43,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 20:59:43,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2021-11-22 20:59:43,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 20:59:43,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 20:59:43,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 20:59:43,938 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 20:59:43,939 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 20:59:43,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-22 20:59:43,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3688f218/e0721879aa334d128f1d71373ce0dece/FLAGbbabc1be8 [2021-11-22 20:59:44,497 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 20:59:44,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-22 20:59:44,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3688f218/e0721879aa334d128f1d71373ce0dece/FLAGbbabc1be8 [2021-11-22 20:59:45,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3688f218/e0721879aa334d128f1d71373ce0dece [2021-11-22 20:59:45,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 20:59:45,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 20:59:45,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 20:59:45,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 20:59:45,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 20:59:45,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:59:45" (1/1) ... [2021-11-22 20:59:45,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ca395f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:59:45, skipping insertion in model container [2021-11-22 20:59:45,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:59:45" (1/1) ... [2021-11-22 20:59:45,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 20:59:45,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 20:59:45,877 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-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-22 20:59:45,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:59:45,929 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 20:59:46,132 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-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-22 20:59:46,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:59:46,273 INFO L208 MainTranslator]: Completed translation [2021-11-22 20:59:46,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:59:46 WrapperNode [2021-11-22 20:59:46,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 20:59:46,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 20:59:46,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 20:59:46,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 20:59:46,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:59:46" (1/1) ... [2021-11-22 20:59:46,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:59:46" (1/1) ... [2021-11-22 20:59:46,442 INFO L137 Inliner]: procedures = 133, calls = 733, calls flagged for inlining = 178, calls inlined = 204, statements flattened = 2742 [2021-11-22 20:59:46,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 20:59:46,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 20:59:46,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 20:59:46,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 20:59:46,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:59:46" (1/1) ... [2021-11-22 20:59:46,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:59:46" (1/1) ... [2021-11-22 20:59:46,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:59:46" (1/1) ... [2021-11-22 20:59:46,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:59:46" (1/1) ... [2021-11-22 20:59:46,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:59:46" (1/1) ... [2021-11-22 20:59:46,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:59:46" (1/1) ... [2021-11-22 20:59:46,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:59:46" (1/1) ... [2021-11-22 20:59:46,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 20:59:46,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 20:59:46,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 20:59:46,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 20:59:46,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:59:46" (1/1) ... [2021-11-22 20:59:46,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:59:46,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:59:46,612 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 20:59:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 20:59:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 20:59:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 20:59:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 20:59:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 20:59:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 20:59:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 20:59:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 20:59:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 20:59:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 20:59:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 20:59:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 20:59:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 20:59:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 20:59:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 20:59:46,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 20:59:46,630 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 20:59:46,958 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 20:59:46,959 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 20:59:46,966 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-22 20:59:49,186 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume !false; [2021-11-22 20:59:49,187 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume false; [2021-11-22 20:59:49,187 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 20:59:49,193 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 20:59:49,193 INFO L301 CfgBuilder]: Removed 27 assume(true) statements. [2021-11-22 20:59:49,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:59:49 BoogieIcfgContainer [2021-11-22 20:59:49,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 20:59:49,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 20:59:49,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 20:59:49,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 20:59:49,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:59:45" (1/3) ... [2021-11-22 20:59:49,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6638444e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:59:49, skipping insertion in model container [2021-11-22 20:59:49,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:59:46" (2/3) ... [2021-11-22 20:59:49,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6638444e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:59:49, skipping insertion in model container [2021-11-22 20:59:49,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:59:49" (3/3) ... [2021-11-22 20:59:49,201 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-22 20:59:49,205 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 20:59:49,205 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-22 20:59:49,237 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 20:59:49,241 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 20:59:49,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-22 20:59:49,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 450 states, 438 states have (on average 1.45662100456621) internal successors, (638), 449 states have internal predecessors, (638), 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 20:59:49,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 20:59:49,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:59:49,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:59:49,260 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 20:59:49,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:59:49,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1804077511, now seen corresponding path program 1 times [2021-11-22 20:59:49,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:59:49,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548266921] [2021-11-22 20:59:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:49,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:59:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:49,550 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 20:59:49,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:59:49,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548266921] [2021-11-22 20:59:49,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548266921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:59:49,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:59:49,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 20:59:49,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478508604] [2021-11-22 20:59:49,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:59:49,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 20:59:49,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:59:49,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 20:59:49,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:59:49,584 INFO L87 Difference]: Start difference. First operand has 450 states, 438 states have (on average 1.45662100456621) internal successors, (638), 449 states have internal predecessors, (638), 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) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 20:59:49,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:59:49,757 INFO L93 Difference]: Finished difference Result 1287 states and 1847 transitions. [2021-11-22 20:59:49,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 20:59:49,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-11-22 20:59:49,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:59:49,776 INFO L225 Difference]: With dead ends: 1287 [2021-11-22 20:59:49,776 INFO L226 Difference]: Without dead ends: 823 [2021-11-22 20:59:49,780 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 20:59:49,782 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 531 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:59:49,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1065 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:59:49,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-11-22 20:59:49,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 805. [2021-11-22 20:59:49,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 794 states have (on average 1.3035264483627205) internal successors, (1035), 804 states have internal predecessors, (1035), 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 20:59:49,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1035 transitions. [2021-11-22 20:59:49,860 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1035 transitions. Word has length 11 [2021-11-22 20:59:49,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:59:49,861 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1035 transitions. [2021-11-22 20:59:49,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 20:59:49,861 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1035 transitions. [2021-11-22 20:59:49,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 20:59:49,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:59:49,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:59:49,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 20:59:49,862 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 20:59:49,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:59:49,864 INFO L85 PathProgramCache]: Analyzing trace with hash 91827952, now seen corresponding path program 1 times [2021-11-22 20:59:49,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:59:49,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730208987] [2021-11-22 20:59:49,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:49,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:59:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:49,992 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 20:59:49,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:59:49,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730208987] [2021-11-22 20:59:49,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730208987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:59:49,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:59:49,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 20:59:49,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203595919] [2021-11-22 20:59:49,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:59:49,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 20:59:49,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:59:49,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 20:59:49,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:59:49,996 INFO L87 Difference]: Start difference. First operand 805 states and 1035 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 20:59:50,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:59:50,053 INFO L93 Difference]: Finished difference Result 2391 states and 3078 transitions. [2021-11-22 20:59:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 20:59:50,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-22 20:59:50,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:59:50,062 INFO L225 Difference]: With dead ends: 2391 [2021-11-22 20:59:50,063 INFO L226 Difference]: Without dead ends: 1588 [2021-11-22 20:59:50,070 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 20:59:50,073 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 515 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:59:50,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 1043 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:59:50,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2021-11-22 20:59:50,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1559. [2021-11-22 20:59:50,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1548 states have (on average 1.302325581395349) internal successors, (2016), 1558 states have internal predecessors, (2016), 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 20:59:50,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2016 transitions. [2021-11-22 20:59:50,133 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2016 transitions. Word has length 12 [2021-11-22 20:59:50,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:59:50,133 INFO L470 AbstractCegarLoop]: Abstraction has 1559 states and 2016 transitions. [2021-11-22 20:59:50,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 20:59:50,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2016 transitions. [2021-11-22 20:59:50,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-22 20:59:50,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:59:50,136 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] [2021-11-22 20:59:50,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 20:59:50,137 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 20:59:50,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:59:50,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1248681017, now seen corresponding path program 1 times [2021-11-22 20:59:50,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:59:50,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70869702] [2021-11-22 20:59:50,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:50,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:59:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:50,251 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 20:59:50,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:59:50,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70869702] [2021-11-22 20:59:50,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70869702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:59:50,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:59:50,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 20:59:50,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816502784] [2021-11-22 20:59:50,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:59:50,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 20:59:50,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:59:50,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 20:59:50,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:59:50,254 INFO L87 Difference]: Start difference. First operand 1559 states and 2016 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 20:59:50,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:59:50,357 INFO L93 Difference]: Finished difference Result 4231 states and 5515 transitions. [2021-11-22 20:59:50,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 20:59:50,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2021-11-22 20:59:50,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:59:50,365 INFO L225 Difference]: With dead ends: 4231 [2021-11-22 20:59:50,365 INFO L226 Difference]: Without dead ends: 2679 [2021-11-22 20:59:50,368 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 20:59:50,369 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 481 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:59:50,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 953 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:59:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2021-11-22 20:59:50,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2638. [2021-11-22 20:59:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2627 states have (on average 1.3178530643319375) internal successors, (3462), 2637 states have internal predecessors, (3462), 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 20:59:50,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 3462 transitions. [2021-11-22 20:59:50,421 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 3462 transitions. Word has length 39 [2021-11-22 20:59:50,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:59:50,421 INFO L470 AbstractCegarLoop]: Abstraction has 2638 states and 3462 transitions. [2021-11-22 20:59:50,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 20:59:50,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 3462 transitions. [2021-11-22 20:59:50,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-22 20:59:50,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:59:50,424 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] [2021-11-22 20:59:50,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 20:59:50,424 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 20:59:50,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:59:50,425 INFO L85 PathProgramCache]: Analyzing trace with hash -277555037, now seen corresponding path program 1 times [2021-11-22 20:59:50,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:59:50,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172152336] [2021-11-22 20:59:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:50,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:59:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:50,515 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 20:59:50,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:59:50,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172152336] [2021-11-22 20:59:50,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172152336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:59:50,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:59:50,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:59:50,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062316201] [2021-11-22 20:59:50,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:59:50,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:59:50,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:59:50,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:59:50,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:59:50,518 INFO L87 Difference]: Start difference. First operand 2638 states and 3462 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 20:59:50,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:59:50,652 INFO L93 Difference]: Finished difference Result 7882 states and 10336 transitions. [2021-11-22 20:59:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:59:50,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 43 [2021-11-22 20:59:50,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:59:50,669 INFO L225 Difference]: With dead ends: 7882 [2021-11-22 20:59:50,670 INFO L226 Difference]: Without dead ends: 5252 [2021-11-22 20:59:50,676 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 20:59:50,682 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 1037 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:59:50,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 1965 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:59:50,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5252 states. [2021-11-22 20:59:50,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5252 to 2654. [2021-11-22 20:59:50,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2654 states, 2643 states have (on average 1.3159288687097994) internal successors, (3478), 2653 states have internal predecessors, (3478), 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 20:59:50,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3478 transitions. [2021-11-22 20:59:50,787 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 3478 transitions. Word has length 43 [2021-11-22 20:59:50,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:59:50,788 INFO L470 AbstractCegarLoop]: Abstraction has 2654 states and 3478 transitions. [2021-11-22 20:59:50,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 20:59:50,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 3478 transitions. [2021-11-22 20:59:50,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 20:59:50,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:59:50,791 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] [2021-11-22 20:59:50,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 20:59:50,791 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 20:59:50,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:59:50,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1247633753, now seen corresponding path program 1 times [2021-11-22 20:59:50,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:59:50,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284056499] [2021-11-22 20:59:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:50,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:59:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:50,895 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 20:59:50,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:59:50,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284056499] [2021-11-22 20:59:50,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284056499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:59:50,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:59:50,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:59:50,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701809986] [2021-11-22 20:59:50,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:59:50,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:59:50,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:59:50,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:59:50,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:59:50,898 INFO L87 Difference]: Start difference. First operand 2654 states and 3478 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 20:59:51,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:59:51,170 INFO L93 Difference]: Finished difference Result 10906 states and 14306 transitions. [2021-11-22 20:59:51,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:59:51,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 44 [2021-11-22 20:59:51,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:59:51,195 INFO L225 Difference]: With dead ends: 10906 [2021-11-22 20:59:51,196 INFO L226 Difference]: Without dead ends: 8260 [2021-11-22 20:59:51,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:59:51,203 INFO L933 BasicCegarLoop]: 918 mSDtfsCounter, 2340 mSDsluCounter, 4053 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2340 SdHoareTripleChecker+Valid, 4971 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:59:51,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2340 Valid, 4971 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:59:51,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8260 states. [2021-11-22 20:59:51,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8260 to 2670. [2021-11-22 20:59:51,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2659 states have (on average 1.3140278300112824) internal successors, (3494), 2669 states have internal predecessors, (3494), 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 20:59:51,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 3494 transitions. [2021-11-22 20:59:51,329 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 3494 transitions. Word has length 44 [2021-11-22 20:59:51,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:59:51,329 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 3494 transitions. [2021-11-22 20:59:51,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 20:59:51,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 3494 transitions. [2021-11-22 20:59:51,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 20:59:51,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:59:51,331 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] [2021-11-22 20:59:51,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 20:59:51,331 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 20:59:51,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:59:51,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1878765402, now seen corresponding path program 1 times [2021-11-22 20:59:51,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:59:51,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603734636] [2021-11-22 20:59:51,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:51,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:59:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:51,413 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 20:59:51,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:59:51,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603734636] [2021-11-22 20:59:51,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603734636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:59:51,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:59:51,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:59:51,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067725237] [2021-11-22 20:59:51,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:59:51,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:59:51,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:59:51,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:59:51,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:59:51,415 INFO L87 Difference]: Start difference. First operand 2670 states and 3494 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 20:59:51,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:59:51,738 INFO L93 Difference]: Finished difference Result 9119 states and 11951 transitions. [2021-11-22 20:59:51,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:59:51,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-11-22 20:59:51,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:59:51,759 INFO L225 Difference]: With dead ends: 9119 [2021-11-22 20:59:51,759 INFO L226 Difference]: Without dead ends: 6457 [2021-11-22 20:59:51,765 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 20:59:51,766 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 1373 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:59:51,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1373 Valid, 2655 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:59:51,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2021-11-22 20:59:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 2372. [2021-11-22 20:59:51,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2361 states have (on average 1.3130029648454045) internal successors, (3100), 2371 states have internal predecessors, (3100), 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 20:59:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 3100 transitions. [2021-11-22 20:59:51,923 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 3100 transitions. Word has length 44 [2021-11-22 20:59:51,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:59:51,923 INFO L470 AbstractCegarLoop]: Abstraction has 2372 states and 3100 transitions. [2021-11-22 20:59:51,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 20:59:51,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 3100 transitions. [2021-11-22 20:59:51,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 20:59:51,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:59:51,924 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] [2021-11-22 20:59:51,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 20:59:51,925 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 20:59:51,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:59:51,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1395133540, now seen corresponding path program 1 times [2021-11-22 20:59:51,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:59:51,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470671222] [2021-11-22 20:59:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:51,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:59:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:52,024 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 20:59:52,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:59:52,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470671222] [2021-11-22 20:59:52,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470671222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:59:52,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:59:52,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:59:52,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187328861] [2021-11-22 20:59:52,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:59:52,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:59:52,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:59:52,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:59:52,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:59:52,026 INFO L87 Difference]: Start difference. First operand 2372 states and 3100 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 20:59:52,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:59:52,640 INFO L93 Difference]: Finished difference Result 13320 states and 17395 transitions. [2021-11-22 20:59:52,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:59:52,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 44 [2021-11-22 20:59:52,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:59:52,667 INFO L225 Difference]: With dead ends: 13320 [2021-11-22 20:59:52,667 INFO L226 Difference]: Without dead ends: 11948 [2021-11-22 20:59:52,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:59:52,691 INFO L933 BasicCegarLoop]: 1120 mSDtfsCounter, 2777 mSDsluCounter, 3352 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2777 SdHoareTripleChecker+Valid, 4472 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:59:52,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2777 Valid, 4472 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:59:52,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11948 states. [2021-11-22 20:59:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11948 to 2432. [2021-11-22 20:59:52,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2421 states have (on average 1.305245766212309) internal successors, (3160), 2431 states have internal predecessors, (3160), 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 20:59:52,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 3160 transitions. [2021-11-22 20:59:52,887 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 3160 transitions. Word has length 44 [2021-11-22 20:59:52,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:59:52,887 INFO L470 AbstractCegarLoop]: Abstraction has 2432 states and 3160 transitions. [2021-11-22 20:59:52,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 20:59:52,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 3160 transitions. [2021-11-22 20:59:52,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 20:59:52,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:59:52,889 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] [2021-11-22 20:59:52,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 20:59:52,889 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 20:59:52,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:59:52,889 INFO L85 PathProgramCache]: Analyzing trace with hash -293810202, now seen corresponding path program 1 times [2021-11-22 20:59:52,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:59:52,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767319656] [2021-11-22 20:59:52,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:52,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:59:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:52,969 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 20:59:52,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:59:52,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767319656] [2021-11-22 20:59:52,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767319656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:59:52,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:59:52,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 20:59:52,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149086784] [2021-11-22 20:59:52,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:59:52,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:59:52,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:59:52,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:59:52,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:59:52,971 INFO L87 Difference]: Start difference. First operand 2432 states and 3160 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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 20:59:53,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:59:53,211 INFO L93 Difference]: Finished difference Result 3825 states and 4968 transitions. [2021-11-22 20:59:53,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:59:53,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-11-22 20:59:53,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:59:53,218 INFO L225 Difference]: With dead ends: 3825 [2021-11-22 20:59:53,218 INFO L226 Difference]: Without dead ends: 3810 [2021-11-22 20:59:53,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:59:53,220 INFO L933 BasicCegarLoop]: 902 mSDtfsCounter, 867 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:59:53,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 1919 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:59:53,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2021-11-22 20:59:53,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3776. [2021-11-22 20:59:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3765 states have (on average 1.3051792828685258) internal successors, (4914), 3775 states have internal predecessors, (4914), 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 20:59:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 4914 transitions. [2021-11-22 20:59:53,382 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 4914 transitions. Word has length 44 [2021-11-22 20:59:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:59:53,383 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 4914 transitions. [2021-11-22 20:59:53,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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 20:59:53,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 4914 transitions. [2021-11-22 20:59:53,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 20:59:53,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:59:53,384 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 20:59:53,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 20:59:53,384 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 20:59:53,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:59:53,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1953730820, now seen corresponding path program 1 times [2021-11-22 20:59:53,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:59:53,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727369231] [2021-11-22 20:59:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:53,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:59:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:59:53,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:59:53,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727369231] [2021-11-22 20:59:53,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727369231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:59:53,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:59:53,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:59:53,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782255568] [2021-11-22 20:59:53,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:59:53,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:59:53,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:59:53,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:59:53,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:59:53,464 INFO L87 Difference]: Start difference. First operand 3776 states and 4914 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 20:59:54,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:59:54,256 INFO L93 Difference]: Finished difference Result 12586 states and 16455 transitions. [2021-11-22 20:59:54,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 20:59:54,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 45 [2021-11-22 20:59:54,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:59:54,276 INFO L225 Difference]: With dead ends: 12586 [2021-11-22 20:59:54,276 INFO L226 Difference]: Without dead ends: 9840 [2021-11-22 20:59:54,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2021-11-22 20:59:54,283 INFO L933 BasicCegarLoop]: 1775 mSDtfsCounter, 2856 mSDsluCounter, 3586 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2856 SdHoareTripleChecker+Valid, 5361 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:59:54,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2856 Valid, 5361 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:59:54,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9840 states. [2021-11-22 20:59:54,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9840 to 3776. [2021-11-22 20:59:54,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3765 states have (on average 1.303054448871182) internal successors, (4906), 3775 states have internal predecessors, (4906), 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 20:59:54,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 4906 transitions. [2021-11-22 20:59:54,594 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 4906 transitions. Word has length 45 [2021-11-22 20:59:54,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:59:54,594 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 4906 transitions. [2021-11-22 20:59:54,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 20:59:54,595 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 4906 transitions. [2021-11-22 20:59:54,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-22 20:59:54,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:59:54,596 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] [2021-11-22 20:59:54,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 20:59:54,596 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 20:59:54,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:59:54,597 INFO L85 PathProgramCache]: Analyzing trace with hash 523835089, now seen corresponding path program 1 times [2021-11-22 20:59:54,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:59:54,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147097425] [2021-11-22 20:59:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:54,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:59:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:54,696 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 20:59:54,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:59:54,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147097425] [2021-11-22 20:59:54,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147097425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:59:54,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:59:54,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:59:54,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644593323] [2021-11-22 20:59:54,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:59:54,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:59:54,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:59:54,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:59:54,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:59:54,698 INFO L87 Difference]: Start difference. First operand 3776 states and 4906 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 20:59:55,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:59:55,295 INFO L93 Difference]: Finished difference Result 12298 states and 15947 transitions. [2021-11-22 20:59:55,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:59:55,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2021-11-22 20:59:55,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:59:55,310 INFO L225 Difference]: With dead ends: 12298 [2021-11-22 20:59:55,310 INFO L226 Difference]: Without dead ends: 8530 [2021-11-22 20:59:55,316 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 20:59:55,317 INFO L933 BasicCegarLoop]: 1161 mSDtfsCounter, 992 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:59:55,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 2833 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:59:55,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8530 states. [2021-11-22 20:59:55,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8530 to 3218. [2021-11-22 20:59:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3207 states have (on average 1.3009042719052073) internal successors, (4172), 3217 states have internal predecessors, (4172), 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 20:59:55,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 4172 transitions. [2021-11-22 20:59:55,510 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 4172 transitions. Word has length 51 [2021-11-22 20:59:55,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:59:55,510 INFO L470 AbstractCegarLoop]: Abstraction has 3218 states and 4172 transitions. [2021-11-22 20:59:55,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 20:59:55,511 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 4172 transitions. [2021-11-22 20:59:55,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-22 20:59:55,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:59:55,512 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] [2021-11-22 20:59:55,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 20:59:55,512 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 20:59:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:59:55,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1518537029, now seen corresponding path program 1 times [2021-11-22 20:59:55,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:59:55,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381320298] [2021-11-22 20:59:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:55,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:59:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:55,598 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 20:59:55,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:59:55,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381320298] [2021-11-22 20:59:55,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381320298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:59:55,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:59:55,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:59:55,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700444672] [2021-11-22 20:59:55,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:59:55,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:59:55,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:59:55,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:59:55,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:59:55,600 INFO L87 Difference]: Start difference. First operand 3218 states and 4172 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 20:59:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:59:56,514 INFO L93 Difference]: Finished difference Result 11537 states and 15015 transitions. [2021-11-22 20:59:56,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 20:59:56,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 52 [2021-11-22 20:59:56,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:59:56,531 INFO L225 Difference]: With dead ends: 11537 [2021-11-22 20:59:56,531 INFO L226 Difference]: Without dead ends: 8775 [2021-11-22 20:59:56,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-11-22 20:59:56,538 INFO L933 BasicCegarLoop]: 1671 mSDtfsCounter, 2865 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2865 SdHoareTripleChecker+Valid, 5090 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:59:56,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2865 Valid, 5090 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:59:56,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8775 states. [2021-11-22 20:59:56,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8775 to 3218. [2021-11-22 20:59:56,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3207 states have (on average 1.2984097287184284) internal successors, (4164), 3217 states have internal predecessors, (4164), 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 20:59:56,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 4164 transitions. [2021-11-22 20:59:56,807 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 4164 transitions. Word has length 52 [2021-11-22 20:59:56,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:59:56,808 INFO L470 AbstractCegarLoop]: Abstraction has 3218 states and 4164 transitions. [2021-11-22 20:59:56,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 20:59:56,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 4164 transitions. [2021-11-22 20:59:56,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-22 20:59:56,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:59:56,809 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] [2021-11-22 20:59:56,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 20:59:56,810 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 20:59:56,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:59:56,810 INFO L85 PathProgramCache]: Analyzing trace with hash 335290497, now seen corresponding path program 1 times [2021-11-22 20:59:56,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:59:56,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545263347] [2021-11-22 20:59:56,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:56,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:59:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:56,879 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 20:59:56,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:59:56,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545263347] [2021-11-22 20:59:56,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545263347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:59:56,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:59:56,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:59:56,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93157816] [2021-11-22 20:59:56,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:59:56,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:59:56,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:59:56,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:59:56,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:59:56,881 INFO L87 Difference]: Start difference. First operand 3218 states and 4164 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 20:59:57,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:59:57,649 INFO L93 Difference]: Finished difference Result 10596 states and 13731 transitions. [2021-11-22 20:59:57,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:59:57,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2021-11-22 20:59:57,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:59:57,661 INFO L225 Difference]: With dead ends: 10596 [2021-11-22 20:59:57,661 INFO L226 Difference]: Without dead ends: 7834 [2021-11-22 20:59:57,667 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 20:59:57,667 INFO L933 BasicCegarLoop]: 1048 mSDtfsCounter, 1426 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:59:57,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1426 Valid, 2827 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:59:57,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7834 states. [2021-11-22 20:59:57,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7834 to 2970. [2021-11-22 20:59:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2959 states have (on average 1.2970598175059143) internal successors, (3838), 2969 states have internal predecessors, (3838), 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 20:59:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 3838 transitions. [2021-11-22 20:59:57,972 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 3838 transitions. Word has length 52 [2021-11-22 20:59:57,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:59:57,972 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 3838 transitions. [2021-11-22 20:59:57,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 20:59:57,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 3838 transitions. [2021-11-22 20:59:57,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-22 20:59:57,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:59:57,974 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] [2021-11-22 20:59:57,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 20:59:57,974 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 20:59:57,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:59:57,975 INFO L85 PathProgramCache]: Analyzing trace with hash -685777857, now seen corresponding path program 1 times [2021-11-22 20:59:57,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:59:57,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402011041] [2021-11-22 20:59:57,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:57,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:59:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:58,070 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 20:59:58,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:59:58,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402011041] [2021-11-22 20:59:58,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402011041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:59:58,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:59:58,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:59:58,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028955457] [2021-11-22 20:59:58,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:59:58,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:59:58,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:59:58,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:59:58,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:59:58,072 INFO L87 Difference]: Start difference. First operand 2970 states and 3838 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 20:59:59,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:59:59,526 INFO L93 Difference]: Finished difference Result 17688 states and 22986 transitions. [2021-11-22 20:59:59,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:59:59,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 52 [2021-11-22 20:59:59,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:59:59,548 INFO L225 Difference]: With dead ends: 17688 [2021-11-22 20:59:59,548 INFO L226 Difference]: Without dead ends: 16271 [2021-11-22 20:59:59,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:59:59,553 INFO L933 BasicCegarLoop]: 1507 mSDtfsCounter, 2056 mSDsluCounter, 3796 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2056 SdHoareTripleChecker+Valid, 5303 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:59:59,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2056 Valid, 5303 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:59:59,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16271 states. [2021-11-22 20:59:59,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16271 to 3018. [2021-11-22 20:59:59,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3018 states, 3007 states have (on average 1.2923179248420353) internal successors, (3886), 3017 states have internal predecessors, (3886), 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 20:59:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 3886 transitions. [2021-11-22 20:59:59,847 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 3886 transitions. Word has length 52 [2021-11-22 20:59:59,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:59:59,848 INFO L470 AbstractCegarLoop]: Abstraction has 3018 states and 3886 transitions. [2021-11-22 20:59:59,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 20:59:59,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 3886 transitions. [2021-11-22 20:59:59,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-22 20:59:59,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:59:59,849 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] [2021-11-22 20:59:59,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 20:59:59,850 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 20:59:59,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:59:59,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1920245697, now seen corresponding path program 1 times [2021-11-22 20:59:59,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:59:59,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303807835] [2021-11-22 20:59:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:59,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:59:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:59,911 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 20:59:59,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:59:59,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303807835] [2021-11-22 20:59:59,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303807835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:59:59,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:59:59,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 20:59:59,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857542498] [2021-11-22 20:59:59,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:59:59,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 20:59:59,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:59:59,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 20:59:59,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:59:59,913 INFO L87 Difference]: Start difference. First operand 3018 states and 3886 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 21:00:00,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:00:00,242 INFO L93 Difference]: Finished difference Result 5696 states and 7327 transitions. [2021-11-22 21:00:00,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 21:00:00,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2021-11-22 21:00:00,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:00:00,248 INFO L225 Difference]: With dead ends: 5696 [2021-11-22 21:00:00,248 INFO L226 Difference]: Without dead ends: 4255 [2021-11-22 21:00:00,250 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 21:00:00,251 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 466 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 21:00:00,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 1437 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 21:00:00,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4255 states. [2021-11-22 21:00:00,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4255 to 3026. [2021-11-22 21:00:00,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3026 states, 3015 states have (on average 1.2915422885572139) internal successors, (3894), 3025 states have internal predecessors, (3894), 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 21:00:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 3894 transitions. [2021-11-22 21:00:00,518 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 3894 transitions. Word has length 52 [2021-11-22 21:00:00,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:00:00,518 INFO L470 AbstractCegarLoop]: Abstraction has 3026 states and 3894 transitions. [2021-11-22 21:00:00,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 21:00:00,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 3894 transitions. [2021-11-22 21:00:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-22 21:00:00,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:00:00,519 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] [2021-11-22 21:00:00,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 21:00:00,520 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:00:00,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:00:00,520 INFO L85 PathProgramCache]: Analyzing trace with hash -273975552, now seen corresponding path program 1 times [2021-11-22 21:00:00,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:00:00,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028558167] [2021-11-22 21:00:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:00:00,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:00:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:00:00,595 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 21:00:00,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:00:00,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028558167] [2021-11-22 21:00:00,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028558167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:00:00,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:00:00,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 21:00:00,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833125515] [2021-11-22 21:00:00,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:00:00,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 21:00:00,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:00:00,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 21:00:00,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:00:00,597 INFO L87 Difference]: Start difference. First operand 3026 states and 3894 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 21:00:00,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:00:00,953 INFO L93 Difference]: Finished difference Result 4483 states and 5752 transitions. [2021-11-22 21:00:00,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 21:00:00,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2021-11-22 21:00:00,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:00:00,960 INFO L225 Difference]: With dead ends: 4483 [2021-11-22 21:00:00,960 INFO L226 Difference]: Without dead ends: 4477 [2021-11-22 21:00:00,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:00:00,962 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 897 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 21:00:00,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 1981 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 21:00:00,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4477 states. [2021-11-22 21:00:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4477 to 4428. [2021-11-22 21:00:01,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4417 states have (on average 1.290921439891329) internal successors, (5702), 4427 states have internal predecessors, (5702), 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 21:00:01,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 5702 transitions. [2021-11-22 21:00:01,296 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 5702 transitions. Word has length 54 [2021-11-22 21:00:01,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:00:01,297 INFO L470 AbstractCegarLoop]: Abstraction has 4428 states and 5702 transitions. [2021-11-22 21:00:01,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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 21:00:01,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 5702 transitions. [2021-11-22 21:00:01,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 21:00:01,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:00:01,300 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 21:00:01,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 21:00:01,300 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:00:01,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:00:01,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1450707508, now seen corresponding path program 1 times [2021-11-22 21:00:01,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:00:01,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713915720] [2021-11-22 21:00:01,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:00:01,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:00:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:00:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:00:01,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:00:01,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713915720] [2021-11-22 21:00:01,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713915720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:00:01,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:00:01,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 21:00:01,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030353320] [2021-11-22 21:00:01,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:00:01,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 21:00:01,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:00:01,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 21:00:01,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:00:01,361 INFO L87 Difference]: Start difference. First operand 4428 states and 5702 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:00:01,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:00:01,824 INFO L93 Difference]: Finished difference Result 8884 states and 11436 transitions. [2021-11-22 21:00:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 21:00:01,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-22 21:00:01,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:00:01,830 INFO L225 Difference]: With dead ends: 8884 [2021-11-22 21:00:01,830 INFO L226 Difference]: Without dead ends: 4461 [2021-11-22 21:00:01,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 21:00:01,835 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 22 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 21:00:01,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1600 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 21:00:01,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2021-11-22 21:00:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 4434. [2021-11-22 21:00:02,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4423 states have (on average 1.2903007008817544) internal successors, (5707), 4433 states have internal predecessors, (5707), 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 21:00:02,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 5707 transitions. [2021-11-22 21:00:02,242 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 5707 transitions. Word has length 55 [2021-11-22 21:00:02,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:00:02,242 INFO L470 AbstractCegarLoop]: Abstraction has 4434 states and 5707 transitions. [2021-11-22 21:00:02,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:00:02,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 5707 transitions. [2021-11-22 21:00:02,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 21:00:02,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:00:02,244 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 21:00:02,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 21:00:02,244 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:00:02,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:00:02,245 INFO L85 PathProgramCache]: Analyzing trace with hash -952683849, now seen corresponding path program 1 times [2021-11-22 21:00:02,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:00:02,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798886187] [2021-11-22 21:00:02,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:00:02,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:00:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:00:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:00:02,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:00:02,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798886187] [2021-11-22 21:00:02,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798886187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:00:02,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:00:02,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 21:00:02,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6361390] [2021-11-22 21:00:02,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:00:02,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 21:00:02,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:00:02,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 21:00:02,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 21:00:02,362 INFO L87 Difference]: Start difference. First operand 4434 states and 5707 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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 21:00:04,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:00:04,973 INFO L93 Difference]: Finished difference Result 22248 states and 28765 transitions. [2021-11-22 21:00:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-22 21:00:04,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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 57 [2021-11-22 21:00:04,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:00:05,001 INFO L225 Difference]: With dead ends: 22248 [2021-11-22 21:00:05,001 INFO L226 Difference]: Without dead ends: 18270 [2021-11-22 21:00:05,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=570, Invalid=2082, Unknown=0, NotChecked=0, Total=2652 [2021-11-22 21:00:05,014 INFO L933 BasicCegarLoop]: 1486 mSDtfsCounter, 5369 mSDsluCounter, 3832 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5369 SdHoareTripleChecker+Valid, 5318 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 21:00:05,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5369 Valid, 5318 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 21:00:05,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18270 states. [2021-11-22 21:00:05,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18270 to 4424. [2021-11-22 21:00:05,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4413 states have (on average 1.286426467255835) internal successors, (5677), 4423 states have internal predecessors, (5677), 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 21:00:05,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 5677 transitions. [2021-11-22 21:00:05,513 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 5677 transitions. Word has length 57 [2021-11-22 21:00:05,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:00:05,513 INFO L470 AbstractCegarLoop]: Abstraction has 4424 states and 5677 transitions. [2021-11-22 21:00:05,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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 21:00:05,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 5677 transitions. [2021-11-22 21:00:05,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 21:00:05,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:00:05,515 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] [2021-11-22 21:00:05,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 21:00:05,515 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:00:05,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:00:05,515 INFO L85 PathProgramCache]: Analyzing trace with hash -70925478, now seen corresponding path program 1 times [2021-11-22 21:00:05,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:00:05,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380756282] [2021-11-22 21:00:05,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:00:05,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:00:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:00:05,609 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 21:00:05,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:00:05,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380756282] [2021-11-22 21:00:05,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380756282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:00:05,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:00:05,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 21:00:05,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719645650] [2021-11-22 21:00:05,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:00:05,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 21:00:05,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:00:05,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 21:00:05,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:00:05,611 INFO L87 Difference]: Start difference. First operand 4424 states and 5677 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 21:00:06,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:00:06,957 INFO L93 Difference]: Finished difference Result 16110 states and 20621 transitions. [2021-11-22 21:00:06,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 21:00:06,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2021-11-22 21:00:06,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:00:06,972 INFO L225 Difference]: With dead ends: 16110 [2021-11-22 21:00:06,973 INFO L226 Difference]: Without dead ends: 12142 [2021-11-22 21:00:06,979 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 21:00:06,980 INFO L933 BasicCegarLoop]: 1498 mSDtfsCounter, 842 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 3234 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 21:00:06,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 3234 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 21:00:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12142 states. [2021-11-22 21:00:07,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12142 to 4365. [2021-11-22 21:00:07,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 4354 states have (on average 1.285254937988057) internal successors, (5596), 4364 states have internal predecessors, (5596), 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 21:00:07,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 5596 transitions. [2021-11-22 21:00:07,466 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 5596 transitions. Word has length 59 [2021-11-22 21:00:07,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:00:07,466 INFO L470 AbstractCegarLoop]: Abstraction has 4365 states and 5596 transitions. [2021-11-22 21:00:07,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 21:00:07,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 5596 transitions. [2021-11-22 21:00:07,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 21:00:07,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:00:07,468 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 21:00:07,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 21:00:07,469 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:00:07,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:00:07,469 INFO L85 PathProgramCache]: Analyzing trace with hash -557373540, now seen corresponding path program 1 times [2021-11-22 21:00:07,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:00:07,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835352382] [2021-11-22 21:00:07,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:00:07,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:00:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:00:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 21:00:07,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:00:07,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835352382] [2021-11-22 21:00:07,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835352382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:00:07,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:00:07,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 21:00:07,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236010293] [2021-11-22 21:00:07,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:00:07,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 21:00:07,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:00:07,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 21:00:07,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:00:07,565 INFO L87 Difference]: Start difference. First operand 4365 states and 5596 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 21:00:08,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:00:08,051 INFO L93 Difference]: Finished difference Result 8724 states and 11185 transitions. [2021-11-22 21:00:08,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 21:00:08,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 59 [2021-11-22 21:00:08,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:00:08,056 INFO L225 Difference]: With dead ends: 8724 [2021-11-22 21:00:08,056 INFO L226 Difference]: Without dead ends: 4365 [2021-11-22 21:00:08,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 21:00:08,061 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 1 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 21:00:08,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1588 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 21:00:08,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4365 states. [2021-11-22 21:00:08,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4365 to 4365. [2021-11-22 21:00:08,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 4354 states have (on average 1.2850252641249427) internal successors, (5595), 4364 states have internal predecessors, (5595), 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 21:00:08,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 5595 transitions. [2021-11-22 21:00:08,531 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 5595 transitions. Word has length 59 [2021-11-22 21:00:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:00:08,531 INFO L470 AbstractCegarLoop]: Abstraction has 4365 states and 5595 transitions. [2021-11-22 21:00:08,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 21:00:08,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 5595 transitions. [2021-11-22 21:00:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 21:00:08,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:00:08,532 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 21:00:08,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 21:00:08,532 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:00:08,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:00:08,533 INFO L85 PathProgramCache]: Analyzing trace with hash 318645466, now seen corresponding path program 1 times [2021-11-22 21:00:08,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:00:08,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772598748] [2021-11-22 21:00:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:00:08,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:00:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:00:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 21:00:08,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:00:08,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772598748] [2021-11-22 21:00:08,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772598748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:00:08,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:00:08,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 21:00:08,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503865605] [2021-11-22 21:00:08,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:00:08,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 21:00:08,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:00:08,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 21:00:08,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:00:08,657 INFO L87 Difference]: Start difference. First operand 4365 states and 5595 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 21:00:09,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:00:09,728 INFO L93 Difference]: Finished difference Result 11352 states and 14598 transitions. [2021-11-22 21:00:09,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 21:00:09,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 59 [2021-11-22 21:00:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:00:09,738 INFO L225 Difference]: With dead ends: 11352 [2021-11-22 21:00:09,738 INFO L226 Difference]: Without dead ends: 9350 [2021-11-22 21:00:09,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:00:09,742 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 809 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 21:00:09,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 1877 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 21:00:09,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9350 states. [2021-11-22 21:00:10,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9350 to 9170. [2021-11-22 21:00:10,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9170 states, 9159 states have (on average 1.2885686210284966) internal successors, (11802), 9169 states have internal predecessors, (11802), 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 21:00:10,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9170 states to 9170 states and 11802 transitions. [2021-11-22 21:00:10,708 INFO L78 Accepts]: Start accepts. Automaton has 9170 states and 11802 transitions. Word has length 59 [2021-11-22 21:00:10,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:00:10,708 INFO L470 AbstractCegarLoop]: Abstraction has 9170 states and 11802 transitions. [2021-11-22 21:00:10,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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 21:00:10,709 INFO L276 IsEmpty]: Start isEmpty. Operand 9170 states and 11802 transitions. [2021-11-22 21:00:10,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 21:00:10,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:00:10,710 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 21:00:10,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 21:00:10,710 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:00:10,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:00:10,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1217677955, now seen corresponding path program 1 times [2021-11-22 21:00:10,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:00:10,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695755996] [2021-11-22 21:00:10,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:00:10,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:00:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:00:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:00:10,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:00:10,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695755996] [2021-11-22 21:00:10,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695755996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:00:10,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:00:10,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 21:00:10,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148075303] [2021-11-22 21:00:10,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:00:10,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 21:00:10,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:00:10,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 21:00:10,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 21:00:10,776 INFO L87 Difference]: Start difference. First operand 9170 states and 11802 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 21:00:19,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:00:19,917 INFO L93 Difference]: Finished difference Result 77662 states and 101240 transitions. [2021-11-22 21:00:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 21:00:19,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 60 [2021-11-22 21:00:19,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:00:20,040 INFO L225 Difference]: With dead ends: 77662 [2021-11-22 21:00:20,040 INFO L226 Difference]: Without dead ends: 69984 [2021-11-22 21:00:20,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-22 21:00:20,068 INFO L933 BasicCegarLoop]: 1510 mSDtfsCounter, 5460 mSDsluCounter, 7145 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5460 SdHoareTripleChecker+Valid, 8655 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 21:00:20,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5460 Valid, 8655 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 21:00:20,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69984 states. [2021-11-22 21:00:21,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69984 to 9134. [2021-11-22 21:00:21,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9134 states, 9123 states have (on average 1.2837882275567247) internal successors, (11712), 9133 states have internal predecessors, (11712), 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 21:00:21,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9134 states to 9134 states and 11712 transitions. [2021-11-22 21:00:21,608 INFO L78 Accepts]: Start accepts. Automaton has 9134 states and 11712 transitions. Word has length 60 [2021-11-22 21:00:21,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:00:21,608 INFO L470 AbstractCegarLoop]: Abstraction has 9134 states and 11712 transitions. [2021-11-22 21:00:21,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 21:00:21,608 INFO L276 IsEmpty]: Start isEmpty. Operand 9134 states and 11712 transitions. [2021-11-22 21:00:21,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 21:00:21,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:00:21,610 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] [2021-11-22 21:00:21,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 21:00:21,610 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:00:21,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:00:21,611 INFO L85 PathProgramCache]: Analyzing trace with hash 994969336, now seen corresponding path program 1 times [2021-11-22 21:00:21,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:00:21,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011478380] [2021-11-22 21:00:21,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:00:21,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:00:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:00:21,720 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 21:00:21,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:00:21,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011478380] [2021-11-22 21:00:21,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011478380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:00:21,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:00:21,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 21:00:21,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388682506] [2021-11-22 21:00:21,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:00:21,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 21:00:21,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:00:21,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 21:00:21,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 21:00:21,722 INFO L87 Difference]: Start difference. First operand 9134 states and 11712 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 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 21:00:27,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:00:27,976 INFO L93 Difference]: Finished difference Result 48812 states and 62743 transitions. [2021-11-22 21:00:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-22 21:00:27,977 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 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 64 [2021-11-22 21:00:27,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:00:28,045 INFO L225 Difference]: With dead ends: 48812 [2021-11-22 21:00:28,045 INFO L226 Difference]: Without dead ends: 40730 [2021-11-22 21:00:28,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=570, Invalid=2082, Unknown=0, NotChecked=0, Total=2652 [2021-11-22 21:00:28,065 INFO L933 BasicCegarLoop]: 1628 mSDtfsCounter, 3975 mSDsluCounter, 5456 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3975 SdHoareTripleChecker+Valid, 7084 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 21:00:28,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3975 Valid, 7084 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 21:00:28,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40730 states. [2021-11-22 21:00:29,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40730 to 9080. [2021-11-22 21:00:29,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9080 states, 9069 states have (on average 1.2815084353291433) internal successors, (11622), 9079 states have internal predecessors, (11622), 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 21:00:29,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9080 states to 9080 states and 11622 transitions. [2021-11-22 21:00:29,633 INFO L78 Accepts]: Start accepts. Automaton has 9080 states and 11622 transitions. Word has length 64 [2021-11-22 21:00:29,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:00:29,633 INFO L470 AbstractCegarLoop]: Abstraction has 9080 states and 11622 transitions. [2021-11-22 21:00:29,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 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 21:00:29,633 INFO L276 IsEmpty]: Start isEmpty. Operand 9080 states and 11622 transitions. [2021-11-22 21:00:29,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 21:00:29,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:00:29,635 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 21:00:29,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 21:00:29,635 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:00:29,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:00:29,636 INFO L85 PathProgramCache]: Analyzing trace with hash 803277708, now seen corresponding path program 1 times [2021-11-22 21:00:29,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:00:29,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393661806] [2021-11-22 21:00:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:00:29,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:00:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:00:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:00:29,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:00:29,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393661806] [2021-11-22 21:00:29,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393661806] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:00:29,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:00:29,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 21:00:29,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101264132] [2021-11-22 21:00:29,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:00:29,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 21:00:29,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:00:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 21:00:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 21:00:29,763 INFO L87 Difference]: Start difference. First operand 9080 states and 11622 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 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 21:00:34,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:00:34,976 INFO L93 Difference]: Finished difference Result 33585 states and 43040 transitions. [2021-11-22 21:00:34,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-22 21:00:34,976 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 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 65 [2021-11-22 21:00:34,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:00:35,020 INFO L225 Difference]: With dead ends: 33585 [2021-11-22 21:00:35,021 INFO L226 Difference]: Without dead ends: 27951 [2021-11-22 21:00:35,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 882 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=570, Invalid=2082, Unknown=0, NotChecked=0, Total=2652 [2021-11-22 21:00:35,034 INFO L933 BasicCegarLoop]: 1680 mSDtfsCounter, 4986 mSDsluCounter, 5365 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4986 SdHoareTripleChecker+Valid, 7045 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 21:00:35,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4986 Valid, 7045 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 21:00:35,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27951 states. [2021-11-22 21:00:36,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27951 to 9042. [2021-11-22 21:00:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9042 states, 9031 states have (on average 1.2791495958365628) internal successors, (11552), 9041 states have internal predecessors, (11552), 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 21:00:36,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9042 states to 9042 states and 11552 transitions. [2021-11-22 21:00:36,445 INFO L78 Accepts]: Start accepts. Automaton has 9042 states and 11552 transitions. Word has length 65 [2021-11-22 21:00:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:00:36,445 INFO L470 AbstractCegarLoop]: Abstraction has 9042 states and 11552 transitions. [2021-11-22 21:00:36,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 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 21:00:36,446 INFO L276 IsEmpty]: Start isEmpty. Operand 9042 states and 11552 transitions. [2021-11-22 21:00:36,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 21:00:36,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:00:36,447 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] [2021-11-22 21:00:36,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 21:00:36,447 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:00:36,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:00:36,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2136194778, now seen corresponding path program 1 times [2021-11-22 21:00:36,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:00:36,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78885121] [2021-11-22 21:00:36,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:00:36,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:00:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:00:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:00:36,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:00:36,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78885121] [2021-11-22 21:00:36,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78885121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:00:36,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:00:36,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 21:00:36,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096104737] [2021-11-22 21:00:36,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:00:36,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 21:00:36,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:00:36,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 21:00:36,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 21:00:36,534 INFO L87 Difference]: Start difference. First operand 9042 states and 11552 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 21:00:46,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:00:46,934 INFO L93 Difference]: Finished difference Result 61984 states and 80047 transitions. [2021-11-22 21:00:46,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 21:00:46,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 67 [2021-11-22 21:00:46,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:00:47,042 INFO L225 Difference]: With dead ends: 61984 [2021-11-22 21:00:47,042 INFO L226 Difference]: Without dead ends: 58196 [2021-11-22 21:00:47,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-22 21:00:47,066 INFO L933 BasicCegarLoop]: 1747 mSDtfsCounter, 4695 mSDsluCounter, 7116 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4695 SdHoareTripleChecker+Valid, 8863 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 21:00:47,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4695 Valid, 8863 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 21:00:47,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58196 states. [2021-11-22 21:00:48,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58196 to 9042. [2021-11-22 21:00:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9042 states, 9031 states have (on average 1.277599379913631) internal successors, (11538), 9041 states have internal predecessors, (11538), 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 21:00:48,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9042 states to 9042 states and 11538 transitions. [2021-11-22 21:00:48,763 INFO L78 Accepts]: Start accepts. Automaton has 9042 states and 11538 transitions. Word has length 67 [2021-11-22 21:00:48,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:00:48,763 INFO L470 AbstractCegarLoop]: Abstraction has 9042 states and 11538 transitions. [2021-11-22 21:00:48,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 21:00:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 9042 states and 11538 transitions. [2021-11-22 21:00:48,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 21:00:48,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:00:48,765 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 21:00:48,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 21:00:48,765 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:00:48,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:00:48,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1174594129, now seen corresponding path program 1 times [2021-11-22 21:00:48,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:00:48,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374036847] [2021-11-22 21:00:48,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:00:48,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:00:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 21:00:48,865 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 21:00:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 21:00:48,996 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 21:00:48,997 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 21:00:48,997 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (10 of 11 remaining) [2021-11-22 21:00:48,999 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (9 of 11 remaining) [2021-11-22 21:00:48,999 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2021-11-22 21:00:49,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (7 of 11 remaining) [2021-11-22 21:00:49,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (6 of 11 remaining) [2021-11-22 21:00:49,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 11 remaining) [2021-11-22 21:00:49,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 11 remaining) [2021-11-22 21:00:49,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2021-11-22 21:00:49,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2021-11-22 21:00:49,001 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2021-11-22 21:00:49,001 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2021-11-22 21:00:49,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 21:00:49,003 INFO L732 BasicCegarLoop]: Path program 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] [2021-11-22 21:00:49,006 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 21:00:49,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 09:00:49 BoogieIcfgContainer [2021-11-22 21:00:49,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 21:00:49,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 21:00:49,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 21:00:49,098 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 21:00:49,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:59:49" (3/4) ... [2021-11-22 21:00:49,100 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 21:00:49,100 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 21:00:49,101 INFO L158 Benchmark]: Toolchain (without parser) took 64078.76ms. Allocated memory was 104.9MB in the beginning and 3.9GB in the end (delta: 3.8GB). Free memory was 62.0MB in the beginning and 1.7GB in the end (delta: -1.7GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2021-11-22 21:00:49,101 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 75.5MB. Free memory is still 33.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 21:00:49,101 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1251.83ms. Allocated memory was 104.9MB in the beginning and 167.8MB in the end (delta: 62.9MB). Free memory was 61.8MB in the beginning and 76.8MB in the end (delta: -15.0MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. [2021-11-22 21:00:49,101 INFO L158 Benchmark]: Boogie Procedure Inliner took 166.74ms. Allocated memory is still 167.8MB. Free memory was 76.8MB in the beginning and 112.1MB in the end (delta: -35.3MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2021-11-22 21:00:49,102 INFO L158 Benchmark]: Boogie Preprocessor took 125.81ms. Allocated memory is still 167.8MB. Free memory was 112.1MB in the beginning and 98.5MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-22 21:00:49,102 INFO L158 Benchmark]: RCFGBuilder took 2625.77ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 98.5MB in the beginning and 135.1MB in the end (delta: -36.6MB). Peak memory consumption was 77.7MB. Max. memory is 16.1GB. [2021-11-22 21:00:49,102 INFO L158 Benchmark]: TraceAbstraction took 59900.67ms. Allocated memory was 218.1MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 135.1MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. [2021-11-22 21:00:49,102 INFO L158 Benchmark]: Witness Printer took 2.93ms. Allocated memory is still 3.9GB. Free memory is still 1.7GB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 21:00:49,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 75.5MB. Free memory is still 33.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1251.83ms. Allocated memory was 104.9MB in the beginning and 167.8MB in the end (delta: 62.9MB). Free memory was 61.8MB in the beginning and 76.8MB in the end (delta: -15.0MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 166.74ms. Allocated memory is still 167.8MB. Free memory was 76.8MB in the beginning and 112.1MB in the end (delta: -35.3MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 125.81ms. Allocated memory is still 167.8MB. Free memory was 112.1MB in the beginning and 98.5MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * RCFGBuilder took 2625.77ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 98.5MB in the beginning and 135.1MB in the end (delta: -36.6MB). Peak memory consumption was 77.7MB. Max. memory is 16.1GB. * TraceAbstraction took 59900.67ms. Allocated memory was 218.1MB in the beginning and 3.9GB in the end (delta: 3.7GB). Free memory was 135.1MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 2.1GB. Max. memory is 16.1GB. * Witness Printer took 2.93ms. Allocated memory is still 3.9GB. Free memory is still 1.7GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 5143, overapproximation of bitwiseAnd at line 6104. Possible FailurePath: [L5149] static struct lock_class_key __key___7 ; [L5150] static struct lock_class_key __key___8 ; [L5290-L5303] static char const __mod_author31[46] __attribute__((__used__, __unused__, __section__(".modinfo"), __aligned__(1))) = { (char const )'a', (char const )'u', (char const )'t', (char const )'h', (char const )'o', (char const )'r', (char const )'=', (char const )'S', (char const )'e', (char const )'b', (char const )'a', (char const )'s', (char const )'t', (char const )'i', (char const )'a', (char const )'n', (char const )' ', (char const )'H', (char const )'a', (char const )'a', (char const )'s', (char const )' ', (char const )'<', (char const )'h', (char const )'a', (char const )'a', (char const )'s', (char const )'@', (char const )'e', (char const )'m', (char const )'s', (char const )'-', (char const )'w', (char const )'u', (char const )'e', (char const )'n', (char const )'s', (char const )'c', (char const )'h', (char const )'e', (char const )'.', (char const )'c', (char const )'o', (char const )'m', (char const )'>', (char const )'\000'}; [L5304-L5323] static char const __mod_description32[70] __attribute__((__used__, __unused__, __section__(".modinfo"), __aligned__(1))) = { (char const )'d', (char const )'e', (char const )'s', (char const )'c', (char const )'r', (char const )'i', (char const )'p', (char const )'t', (char const )'i', (char const )'o', (char const )'n', (char const )'=', (char const )'C', (char const )'A', (char const )'N', (char const )' ', (char const )'d', (char const )'r', (char const )'i', (char const )'v', (char const )'e', (char const )'r', (char const )' ', (char const )'f', (char const )'o', (char const )'r', (char const )' ', (char const )'E', (char const )'M', (char const )'S', (char const )' ', (char const )'D', (char const )'r', (char const )'.', (char const )' ', (char const )'T', (char const )'h', (char const )'o', (char const )'m', (char const )'a', (char const )'s', (char const )' ', (char const )'W', (char const )'u', (char const )'e', (char const )'n', (char const )'s', (char const )'c', (char const )'h', (char const )'e', (char const )' ', (char const )'C', (char const )'A', (char const )'N', (char const )'/', (char const )'U', (char const )'S', (char const )'B', (char const )' ', (char const )'i', (char const )'n', (char const )'t', (char const )'e', (char const )'r', (char const )'f', (char const )'a', (char const )'c', (char const )'e', (char const )'s', (char const )'\000'}; [L5324-L5329] static char const __mod_license33[15] __attribute__((__used__, __unused__, __section__(".modinfo"), __aligned__(1))) = { (char const )'l', (char const )'i', (char const )'c', (char const )'e', (char const )'n', (char const )'s', (char const )'e', (char const )'=', (char const )'G', (char const )'P', (char const )'L', (char const )' ', (char const )'v', (char const )'2', (char const )'\000'}; [L5330-L5332] static struct usb_device_id ems_usb_table[1] = { {(__u16 )3, (__u16 )4822, (__u16 )1092, (unsigned short)0, (unsigned short)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, 0UL}}; [L6247-L6287] static struct net_device_ops const ems_usb_netdev_ops = {(int (*)(struct net_device *dev ))0, (void (*)(struct net_device *dev ))0, & ems_usb_open, & ems_usb_close, & ems_usb_start_xmit, (u16 (*)(struct net_device *dev , struct sk_buff *skb ))0, (void (*)(struct net_device *dev , int flags ))0, (void (*)(struct net_device *dev ))0, (void (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , void *addr ))0, (int (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , struct ifreq *ifr , int cmd ))0, (int (*)(struct net_device *dev , struct ifmap *map ))0, (int (*)(struct net_device *dev , int new_mtu ))0, (int (*)(struct net_device *dev , struct neigh_parms * ))0, (void (*)(struct net_device *dev ))0, (struct rtnl_link_stats64 *(*)(struct net_device *dev , struct rtnl_link_stats64 *storage ))0, (struct net_device_stats *(*)(struct net_device *dev ))0, (void (*)(struct net_device *dev , struct vlan_group *grp ))0, (void (*)(struct net_device *dev , unsigned short vid ))0, (void (*)(struct net_device *dev , unsigned short vid ))0, (void (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , struct netpoll_info *info ))0, (void (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , int queue , u8 *mac ))0, (int (*)(struct net_device *dev , int queue , u16 vlan , u8 qos ))0, (int (*)(struct net_device *dev , int vf , int rate ))0, (int (*)(struct net_device *dev , int vf , struct ifla_vf_info *ivf ))0, (int (*)(struct net_device *dev , int vf , struct nlattr **port ))0, (int (*)(struct net_device *dev , int vf , struct sk_buff *skb ))0, (int (*)(struct net_device *dev , u8 tc ))0, (int (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , u16 xid , struct scatterlist *sgl , unsigned int sgc ))0, (int (*)(struct net_device *dev , u16 xid ))0, (int (*)(struct net_device *dev , u16 xid , struct scatterlist *sgl , unsigned int sgc ))0, (int (*)(struct net_device *dev , u64 *wwn , int type ))0, (int (*)(struct net_device *dev , struct sk_buff const *skb , u16 rxq_index , u32 flow_id ))0, (int (*)(struct net_device *dev , struct net_device *slave_dev ))0, (int (*)(struct net_device *dev , struct net_device *slave_dev ))0, (u32 (*)(struct net_device *dev , u32 features ))0, (int (*)(struct net_device *dev , u32 features ))0}; [L6288-L6292] static struct can_bittiming_const ems_usb_bittiming_const = {{(char )'e', (char )'m', (char )'s', (char )'_', (char )'u', (char )'s', (char )'b', (char )'\000', (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0}, (__u32 )1, (__u32 )16, (__u32 )1, (__u32 )8, (__u32 )4, (__u32 )1, (__u32 )64, (__u32 )1}; [L6543-L6561] static struct usb_driver ems_usb_driver = {"ems_usb", & ems_usb_probe, & ems_usb_disconnect, (int (*)(struct usb_interface *intf , unsigned int code , void *buf ))0, (int (*)(struct usb_interface *intf , pm_message_t message ))0, (int (*)(struct usb_interface *intf ))0, (int (*)(struct usb_interface *intf ))0, (int (*)(struct usb_interface *intf ))0, (int (*)(struct usb_interface *intf ))0, (struct usb_device_id const *)(ems_usb_table), {{{{{0U}, 0U, 0U, (void *)0, {(struct lock_class_key *)0, {(struct lock_class *)0, (struct lock_class *)0}, (char const *)0, 0, 0UL}}}}, {(struct list_head *)0, (struct list_head *)0}}, {{(char const *)0, (struct bus_type *)0, (struct module *)0, (char const *)0, (_Bool)0, (struct of_device_id const *)0, (int (*)(struct device *dev ))0, (int (*)(struct device *dev ))0, (void (*)(struct device *dev ))0, (int (*)(struct device *dev , pm_message_t state ))0, (int (*)(struct device *dev ))0, (struct attribute_group const **)0, (struct dev_pm_ops const *)0, (struct driver_private *)0}, 0}, 0U, 0U, 0U}; [L6614] int LDV_IN_INTERRUPT ; [L6615] static int res_ems_usb_open_10 ; [L6616] static int res_ems_usb_close_12 ; [L6617] static int res_ems_usb_probe_16 ; [L6767] int ldv_urb_state = 0; [L6768] int ldv_coherent_state = 0; VAL [__key___7={36:0}, __key___8={37:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6619] struct net_device *var_group1 ; [L6620] struct sk_buff *var_group2 ; [L6621] struct usb_interface *var_group3 ; [L6622] struct usb_device_id const *var_ems_usb_probe_16_p1 ; [L6623] int tmp___7 ; [L6624] int ldv_s_ems_usb_netdev_ops_net_device_ops ; [L6625] int ldv_s_ems_usb_driver_usb_driver ; [L6626] int tmp___8 ; [L6627] int tmp___9 ; [L6630] LDV_IN_INTERRUPT = 1 [L6631] FCALL ldv_initialize() [L6632] CALL, EXPR ems_usb_init() [L6565] int err ; [L6569] CALL, EXPR usb_register(& ems_usb_driver) [L5140] int tmp___7 ; [L5143] CALL, EXPR usb_register_driver(driver, & __this_module, "ems_usb") [L7025] return __VERIFIER_nondet_int(); [L5143] RET, EXPR usb_register_driver(driver, & __this_module, "ems_usb") [L5143] tmp___7 = usb_register_driver(driver, & __this_module, "ems_usb") [L5145] return (tmp___7); VAL [\result=0, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, driver={41:0}, driver={41:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0] [L6569] RET, EXPR usb_register(& ems_usb_driver) [L6569] err = usb_register(& ems_usb_driver) [L6571] COND FALSE !(\read(err)) [L6578] return (0); VAL [\result=0, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, err=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6632] RET, EXPR ems_usb_init() [L6632] tmp___7 = ems_usb_init() [L6634] COND FALSE !(\read(tmp___7)) [L6638] ldv_s_ems_usb_netdev_ops_net_device_ops = 0 [L6639] ldv_s_ems_usb_driver_usb_driver = 0 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0] [L6641] COND TRUE 1 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0] [L6644] tmp___9 = __VERIFIER_nondet_int() [L6646] COND TRUE \read(tmp___9) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___9=1] [L6655] tmp___8 = __VERIFIER_nondet_int() [L6657] COND FALSE !(tmp___8 == 0) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=1] [L6660] COND FALSE !(tmp___8 == 1) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=1] [L6663] COND TRUE tmp___8 == 2 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=1] [L6704] CALL ems_usb_start_xmit(var_group2, var_group1) [L6048] struct ems_usb *dev ; [L6049] void *tmp___7 ; [L6050] struct ems_tx_urb_context *context ; [L6051] struct net_device_stats *stats ; [L6052] struct can_frame *cf ; [L6053] struct ems_cpc_msg *msg ; [L6054] struct urb *urb ; [L6055] u8 *buf ; [L6056] int i ; [L6057] int err ; [L6058] size_t size ; [L6059] int tmp___8 ; [L6060] void *tmp___9 ; [L6061] unsigned int tmp___10 ; [L6062] int tmp___11 ; [L6063] long tmp___12 ; [L6066] CALL, EXPR netdev_priv((struct net_device const *)netdev) [L4976] return ((void *)((char *)dev + ((sizeof(struct net_device ) + 31UL) & 0x0fffffffffffffe0UL))); VAL [\result={0:-520}, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, dev={0:-519}, dev={0:-519}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6066] RET, EXPR netdev_priv((struct net_device const *)netdev) [L6066] tmp___7 = netdev_priv((struct net_device const *)netdev) [L6067] dev = (struct ems_usb *)tmp___7 [L6068] context = (struct ems_tx_urb_context *)((void *)0) [L6069] stats = & netdev->stats [L6070] EXPR skb->data [L6070] cf = (struct can_frame *)skb->data [L6071] size = 15UL + sizeof(struct cpc_can_msg ) [L6072] CALL, EXPR can_dropped_invalid_skb(netdev, skb) [L5252] struct can_frame const *cf ; [L5253] int tmp___7 ; [L5254] long tmp___8 ; [L5256] EXPR skb->data [L5256] cf = (struct can_frame const *)((struct can_frame *)skb->data) [L5257] EXPR skb->len VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, cf={-18446744073709551617:-8}, dev={0:-519}, dev={0:-519}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={18446744073709551623:0}, skb={18446744073709551623:0}, skb->len=4294967309] [L5257] COND FALSE !((unsigned long )skb->len != sizeof(*cf)) [L5260] EXPR cf->can_dlc VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, cf={-18446744073709551617:-8}, cf->can_dlc=0, dev={0:-519}, dev={0:-519}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={18446744073709551623:0}, skb={18446744073709551623:0}] [L5260] COND FALSE !((int const )cf->can_dlc > 8) [L5263] tmp___7 = 0 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, cf={-18446744073709551617:-8}, dev={0:-519}, dev={0:-519}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={18446744073709551623:0}, skb={18446744073709551623:0}, tmp___7=0] [L5266] tmp___8 = __builtin_expect((long )tmp___7, 0L) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, cf={-18446744073709551617:-8}, dev={0:-519}, dev={0:-519}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={18446744073709551623:0}, skb={18446744073709551623:0}, tmp___7=0, tmp___8=0] [L5268] COND FALSE !(\read(tmp___8)) [L5276] return (0); VAL [\result=0, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, cf={-18446744073709551617:-8}, dev={0:-519}, dev={0:-519}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, skb={18446744073709551623:0}, skb={18446744073709551623:0}, tmp___7=0, tmp___8=0] [L6072] RET, EXPR can_dropped_invalid_skb(netdev, skb) [L6072] tmp___8 = can_dropped_invalid_skb(netdev, skb) [L6074] COND FALSE !(\read(tmp___8)) [L6079] CALL, EXPR usb_alloc_urb(0, 32U) [L6830] void *arbitrary_memory ; [L6831] void *tmp___7 ; VAL [\old(iso_packets)=0, \old(mem_flags)=32, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6834] COND TRUE 1 VAL [\old(iso_packets)=0, \old(mem_flags)=32, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6837] CALL, EXPR ldv_undefined_pointer() [L6982] CALL, EXPR ldv_malloc(0UL) [L6911] COND FALSE !(__VERIFIER_nondet_bool()) [L6912] return malloc(size); [L6982] RET, EXPR ldv_malloc(0UL) [L6982] return ldv_malloc(0UL); [L6837] RET, EXPR ldv_undefined_pointer() [L6837] tmp___7 = ldv_undefined_pointer() [L6838] arbitrary_memory = tmp___7 VAL [\old(iso_packets)=0, \old(mem_flags)=32, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, arbitrary_memory={-3:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7={-3:0}] [L6840] COND FALSE !(! arbitrary_memory) [L6844] ldv_urb_state = ldv_urb_state + 1 [L6845] return ((struct urb *)arbitrary_memory); VAL [\old(iso_packets)=0, \old(mem_flags)=32, \result={-3:0}, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, arbitrary_memory={-3:0}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, iso_packets=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7={-3:0}] [L6079] RET, EXPR usb_alloc_urb(0, 32U) [L6079] urb = usb_alloc_urb(0, 32U) [L6081] COND FALSE !(! urb) [L6089] EXPR dev->udev [L6089] CALL, EXPR usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma) [L6773] void *arbitrary_memory ; [L6774] void *tmp___7 ; VAL [\old(mem_flags)=32, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, dev={18446744073709551622:18446744073709551621}, dev={18446744073709551622:18446744073709551621}, dma={-3:104}, dma={-3:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6777] COND TRUE 1 VAL [\old(mem_flags)=32, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, dev={18446744073709551622:18446744073709551621}, dev={18446744073709551622:18446744073709551621}, dma={-3:104}, dma={-3:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6780] CALL, EXPR ldv_undefined_pointer() [L6982] CALL, EXPR ldv_malloc(0UL) [L6911] COND FALSE !(__VERIFIER_nondet_bool()) [L6912] return malloc(size); [L6982] RET, EXPR ldv_malloc(0UL) [L6982] return ldv_malloc(0UL); [L6780] RET, EXPR ldv_undefined_pointer() [L6780] tmp___7 = ldv_undefined_pointer() [L6781] arbitrary_memory = tmp___7 VAL [\old(mem_flags)=32, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, arbitrary_memory={-18446744073709551617:0}, dev={18446744073709551622:18446744073709551621}, dev={18446744073709551622:18446744073709551621}, dma={-3:104}, dma={-3:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, tmp___7={-18446744073709551617:0}] [L6783] COND FALSE !(! arbitrary_memory) [L6787] ldv_coherent_state = ldv_coherent_state + 1 [L6788] return (arbitrary_memory); VAL [\old(mem_flags)=32, \old(size)=28, \result={-18446744073709551617:0}, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, arbitrary_memory={-18446744073709551617:0}, dev={18446744073709551622:18446744073709551621}, dev={18446744073709551622:18446744073709551621}, dma={-3:104}, dma={-3:104}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, mem_flags=32, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, tmp___7={-18446744073709551617:0}] [L6089] RET, EXPR usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma) [L6089] tmp___9 = usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma) [L6090] buf = (u8 *)tmp___9 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, buf={-18446744073709551617:0}, cf={-18446744073709551617:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551623:0}, skb={18446744073709551623:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6092] COND FALSE !(! buf) [L6100] msg = (struct ems_cpc_msg *)(buf + 4) [L6101] EXPR cf->can_id [L6101] msg->msg.can_msg.id = cf->can_id & 536870911U [L6102] EXPR cf->can_dlc [L6102] msg->msg.can_msg.length = cf->can_dlc [L6103] EXPR cf->can_id VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, buf={-18446744073709551617:0}, cf={-18446744073709551617:-8}, cf->can_id=18446744073709551625, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551623:0}, skb={18446744073709551623:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6103] COND TRUE cf->can_id & 1073741824U [L6104] EXPR cf->can_id VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, buf={-18446744073709551617:0}, cf={-18446744073709551617:-8}, cf->can_id=18446744073709551625, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551623:0}, skb={18446744073709551623:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6104] COND FALSE !(cf->can_id & 2147483648U) [L6107] msg->type = (u8 )13 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, buf={-18446744073709551617:0}, cf={-18446744073709551617:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551623:0}, skb={18446744073709551623:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6109] msg->length = (u8 )5 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, buf={-18446744073709551617:0}, cf={-18446744073709551617:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551623:0}, skb={18446744073709551623:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6132] EXPR msg->msg.can_msg.id [L6132] msg->msg.can_msg.id = msg->msg.can_msg.id [L6133] i = 0 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, buf={-18446744073709551617:0}, cf={-18446744073709551617:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551623:0}, skb={18446744073709551623:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6135] COND TRUE 1 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, buf={-18446744073709551617:0}, cf={-18446744073709551617:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551623:0}, skb={18446744073709551623:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6137] COND TRUE i < 10 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, buf={-18446744073709551617:0}, cf={-18446744073709551617:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551623:0}, skb={18446744073709551623:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6141] EXPR dev->tx_contexts[i].echo_index VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, buf={-18446744073709551617:0}, cf={-18446744073709551617:-8}, context={0:0}, dev={0:-520}, dev->tx_contexts[i].echo_index=4294967306, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551623:0}, skb={18446744073709551623:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6141] COND TRUE dev->tx_contexts[i].echo_index == 10U [L6142] context = & dev->tx_contexts[i] VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, buf={-18446744073709551617:0}, cf={-18446744073709551617:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551623:0}, skb={18446744073709551623:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6151] COND TRUE ! context [L6153] FCALL usb_unanchor_urb(urb) [L6154] EXPR dev->udev [L6154] EXPR urb->transfer_dma [L6154] CALL usb_free_coherent(dev->udev, size, (void *)buf, urb->transfer_dma) [L6802] COND TRUE 1 VAL [\old(dma)=13, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, addr={-18446744073709551617:0}, addr={-18446744073709551617:0}, dev={18446744073709551622:18446744073709551621}, dev={18446744073709551622:18446744073709551621}, dma=13, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6804] COND FALSE !(! ((unsigned long )addr != (unsigned long )((void *)0))) VAL [\old(dma)=13, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, addr={-18446744073709551617:0}, addr={-18446744073709551617:0}, dev={18446744073709551622:18446744073709551621}, dev={18446744073709551622:18446744073709551621}, dma=13, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6810] COND TRUE \read(*addr) VAL [\old(dma)=13, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, addr={-18446744073709551617:0}, addr={-18446744073709551617:0}, dev={18446744073709551622:18446744073709551621}, dev={18446744073709551622:18446744073709551621}, dma=13, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6811] COND TRUE ldv_coherent_state >= 1 VAL [\old(dma)=13, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, addr={-18446744073709551617:0}, addr={-18446744073709551617:0}, dev={18446744073709551622:18446744073709551621}, dev={18446744073709551622:18446744073709551621}, dma=13, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6817] ldv_coherent_state = ldv_coherent_state - 1 VAL [\old(dma)=13, \old(size)=28, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, addr={-18446744073709551617:0}, addr={-18446744073709551617:0}, dev={18446744073709551622:18446744073709551621}, dev={18446744073709551622:18446744073709551621}, dma=13, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28] [L6154] RET usb_free_coherent(dev->udev, size, (void *)buf, urb->transfer_dma) [L6155] netdev->dev.parent [L6157] return ((netdev_tx_t )16); VAL [\result=16, __key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, buf={-18446744073709551617:0}, cf={-18446744073709551617:-8}, context={0:0}, dev={0:-520}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, i=0, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, msg={-18446744073709551617:4}, netdev={0:-519}, netdev={0:-519}, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, size=28, skb={18446744073709551623:0}, skb={18446744073709551623:0}, stats={0:-331}, tmp___7={0:-520}, tmp___8=0, tmp___9={-18446744073709551617:0}, urb={-3:0}] [L6704] RET ems_usb_start_xmit(var_group2, var_group1) [L6641] COND TRUE 1 VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=1, var_group1={0:-519}, var_group2={18446744073709551623:0}] [L6644] tmp___9 = __VERIFIER_nondet_int() [L6646] COND FALSE !(\read(tmp___9)) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=0, var_group1={0:-519}, var_group2={18446744073709551623:0}] [L6648] COND FALSE !(! (ldv_s_ems_usb_netdev_ops_net_device_ops == 0)) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=0, var_group1={0:-519}, var_group2={18446744073709551623:0}] [L6650] COND FALSE !(! (ldv_s_ems_usb_driver_usb_driver == 0)) VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_s_ems_usb_driver_usb_driver=0, ldv_s_ems_usb_netdev_ops_net_device_ops=0, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0, tmp___7=0, tmp___8=2, tmp___9=0, var_group1={0:-519}, var_group2={18446744073709551623:0}] [L6742] CALL ems_usb_exit() [L6587] FCALL usb_deregister(& ems_usb_driver) [L6742] RET ems_usb_exit() [L6746] CALL ldv_check_final_state() [L6889] COND FALSE !(ldv_urb_state == 0) [L6892] CALL ldv_blast_assert() [L6754] reach_error() VAL [__key___7={36:0}, __key___8={37:0}, __this_module={18446744073709551618:18446744073709551630}, ems_usb_bittiming_const={40:0}, ems_usb_driver={41:0}, ems_usb_netdev_ops={39:0}, ems_usb_table={38:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 450 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 59.8s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 45.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47638 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47638 mSDsluCounter, 89139 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62213 mSDsCounter, 305 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2834 IncrementalHoareTripleChecker+Invalid, 3139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 305 mSolverCounterUnsat, 26926 mSDtfsCounter, 2834 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 415 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2936 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9170occurred in iteration=20, InterpolantAutomatonStates: 311, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.9s AutomataMinimizationTime, 24 MinimizatonAttempts, 240632 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1251 NumberOfCodeBlocks, 1251 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1160 ConstructedInterpolants, 0 QuantifiedInterpolants, 1930 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 26/26 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-22 21:00:49,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 21:00:51,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 21:00:51,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 21:00:51,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 21:00:51,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 21:00:51,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 21:00:51,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 21:00:51,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 21:00:51,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 21:00:51,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 21:00:51,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 21:00:51,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 21:00:51,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 21:00:51,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 21:00:51,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 21:00:51,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 21:00:51,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 21:00:51,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 21:00:51,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 21:00:51,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 21:00:51,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 21:00:51,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 21:00:51,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 21:00:51,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 21:00:51,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 21:00:51,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 21:00:51,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 21:00:51,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 21:00:51,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 21:00:51,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 21:00:51,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 21:00:51,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 21:00:51,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 21:00:51,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 21:00:51,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 21:00:51,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 21:00:51,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 21:00:51,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 21:00:51,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 21:00:51,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 21:00:51,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 21:00:51,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-22 21:00:51,260 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 21:00:51,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 21:00:51,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 21:00:51,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 21:00:51,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 21:00:51,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 21:00:51,263 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 21:00:51,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 21:00:51,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 21:00:51,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 21:00:51,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 21:00:51,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 21:00:51,265 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 21:00:51,265 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 21:00:51,265 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 21:00:51,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 21:00:51,265 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 21:00:51,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 21:00:51,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 21:00:51,266 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 21:00:51,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 21:00:51,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 21:00:51,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 21:00:51,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 21:00:51,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 21:00:51,266 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 21:00:51,267 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 21:00:51,267 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 21:00:51,267 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 21:00:51,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 21:00:51,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 21:00:51,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 21:00:51,267 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2021-11-22 21:00:51,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 21:00:51,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 21:00:51,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 21:00:51,561 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 21:00:51,562 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 21:00:51,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-22 21:00:51,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d873fbb7b/26f4b421e0674d5abee37d2219f77097/FLAG82aefbef8 [2021-11-22 21:00:52,138 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 21:00:52,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-22 21:00:52,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d873fbb7b/26f4b421e0674d5abee37d2219f77097/FLAG82aefbef8 [2021-11-22 21:00:52,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d873fbb7b/26f4b421e0674d5abee37d2219f77097 [2021-11-22 21:00:52,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 21:00:52,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 21:00:52,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 21:00:52,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 21:00:52,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 21:00:52,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:00:52" (1/1) ... [2021-11-22 21:00:52,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef737a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:00:52, skipping insertion in model container [2021-11-22 21:00:52,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:00:52" (1/1) ... [2021-11-22 21:00:52,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 21:00:52,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 21:00:53,234 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-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-22 21:00:53,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 21:00:53,303 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-22 21:00:53,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 21:00:53,498 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-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-22 21:00:53,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 21:00:53,532 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 21:00:53,734 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-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-22 21:00:53,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 21:00:53,919 INFO L208 MainTranslator]: Completed translation [2021-11-22 21:00:53,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:00:53 WrapperNode [2021-11-22 21:00:53,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 21:00:53,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 21:00:53,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 21:00:53,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 21:00:53,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:00:53" (1/1) ... [2021-11-22 21:00:53,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:00:53" (1/1) ... [2021-11-22 21:00:54,056 INFO L137 Inliner]: procedures = 148, calls = 733, calls flagged for inlining = 178, calls inlined = 204, statements flattened = 2684 [2021-11-22 21:00:54,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 21:00:54,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 21:00:54,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 21:00:54,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 21:00:54,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:00:53" (1/1) ... [2021-11-22 21:00:54,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:00:53" (1/1) ... [2021-11-22 21:00:54,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:00:53" (1/1) ... [2021-11-22 21:00:54,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:00:53" (1/1) ... [2021-11-22 21:00:54,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:00:53" (1/1) ... [2021-11-22 21:00:54,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:00:53" (1/1) ... [2021-11-22 21:00:54,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:00:53" (1/1) ... [2021-11-22 21:00:54,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 21:00:54,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 21:00:54,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 21:00:54,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 21:00:54,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:00:53" (1/1) ... [2021-11-22 21:00:54,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 21:00:54,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 21:00:54,227 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 21:00:54,245 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 21:00:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-22 21:00:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-22 21:00:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-22 21:00:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 21:00:54,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 21:00:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-22 21:00:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-22 21:00:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-22 21:00:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-22 21:00:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 21:00:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 21:00:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 21:00:54,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 21:00:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-22 21:00:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-22 21:00:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-22 21:00:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 21:00:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-22 21:00:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-22 21:00:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 21:00:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-22 21:00:54,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 21:00:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-22 21:00:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-22 21:00:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-22 21:00:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-22 21:00:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-22 21:00:54,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 21:00:54,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 21:00:54,566 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 21:00:54,568 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 21:00:54,577 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-22 21:01:22,976 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume !false; [2021-11-22 21:01:22,976 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume false; [2021-11-22 21:01:22,976 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 21:01:22,983 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 21:01:22,983 INFO L301 CfgBuilder]: Removed 27 assume(true) statements. [2021-11-22 21:01:22,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:01:22 BoogieIcfgContainer [2021-11-22 21:01:22,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 21:01:22,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 21:01:23,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 21:01:23,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 21:01:23,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:00:52" (1/3) ... [2021-11-22 21:01:23,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1d3f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:01:23, skipping insertion in model container [2021-11-22 21:01:23,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:00:53" (2/3) ... [2021-11-22 21:01:23,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1d3f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:01:23, skipping insertion in model container [2021-11-22 21:01:23,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:01:22" (3/3) ... [2021-11-22 21:01:23,010 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-22 21:01:23,014 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 21:01:23,014 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-22 21:01:23,055 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 21:01:23,061 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 21:01:23,061 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-22 21:01:23,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 450 states, 438 states have (on average 1.45662100456621) internal successors, (638), 449 states have internal predecessors, (638), 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 21:01:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 21:01:23,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:01:23,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:01:23,085 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:01:23,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:01:23,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1804077511, now seen corresponding path program 1 times [2021-11-22 21:01:23,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:01:23,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477113200] [2021-11-22 21:01:23,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:01:23,099 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:01:23,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:01:23,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:01:23,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 21:01:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:01:23,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 21:01:23,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:01:23,729 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 21:01:23,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:01:23,851 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 21:01:23,852 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:01:23,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477113200] [2021-11-22 21:01:23,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477113200] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:01:23,852 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:01:23,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 21:01:23,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38091497] [2021-11-22 21:01:23,854 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:01:23,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 21:01:23,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:01:23,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 21:01:23,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 21:01:23,878 INFO L87 Difference]: Start difference. First operand has 450 states, 438 states have (on average 1.45662100456621) internal successors, (638), 449 states have internal predecessors, (638), 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) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 21:01:24,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:01:24,157 INFO L93 Difference]: Finished difference Result 1287 states and 1847 transitions. [2021-11-22 21:01:24,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 21:01:24,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-11-22 21:01:24,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:01:24,177 INFO L225 Difference]: With dead ends: 1287 [2021-11-22 21:01:24,178 INFO L226 Difference]: Without dead ends: 823 [2021-11-22 21:01:24,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 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 21:01:24,190 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 531 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 21:01:24,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1065 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 21:01:24,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-11-22 21:01:24,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 805. [2021-11-22 21:01:24,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 794 states have (on average 1.3035264483627205) internal successors, (1035), 804 states have internal predecessors, (1035), 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 21:01:24,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1035 transitions. [2021-11-22 21:01:24,262 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1035 transitions. Word has length 11 [2021-11-22 21:01:24,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:01:24,263 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1035 transitions. [2021-11-22 21:01:24,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 21:01:24,263 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1035 transitions. [2021-11-22 21:01:24,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 21:01:24,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:01:24,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:01:24,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 21:01:24,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:01:24,476 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:01:24,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:01:24,477 INFO L85 PathProgramCache]: Analyzing trace with hash 91827952, now seen corresponding path program 1 times [2021-11-22 21:01:24,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:01:24,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028210439] [2021-11-22 21:01:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:01:24,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:01:24,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:01:24,488 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:01:24,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 21:01:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:01:24,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 21:01:24,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:01:25,023 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 21:01:25,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:01:25,157 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 21:01:25,158 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:01:25,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028210439] [2021-11-22 21:01:25,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028210439] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:01:25,158 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:01:25,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 21:01:25,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896237415] [2021-11-22 21:01:25,158 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:01:25,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 21:01:25,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:01:25,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 21:01:25,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 21:01:25,160 INFO L87 Difference]: Start difference. First operand 805 states and 1035 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 21:01:25,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:01:25,339 INFO L93 Difference]: Finished difference Result 2391 states and 3078 transitions. [2021-11-22 21:01:25,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 21:01:25,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-22 21:01:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:01:25,346 INFO L225 Difference]: With dead ends: 2391 [2021-11-22 21:01:25,346 INFO L226 Difference]: Without dead ends: 1588 [2021-11-22 21:01:25,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 21:01:25,349 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 515 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 21:01:25,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 1043 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 21:01:25,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2021-11-22 21:01:25,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1559. [2021-11-22 21:01:25,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1548 states have (on average 1.302325581395349) internal successors, (2016), 1558 states have internal predecessors, (2016), 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 21:01:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2016 transitions. [2021-11-22 21:01:25,405 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2016 transitions. Word has length 12 [2021-11-22 21:01:25,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:01:25,405 INFO L470 AbstractCegarLoop]: Abstraction has 1559 states and 2016 transitions. [2021-11-22 21:01:25,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 21:01:25,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2016 transitions. [2021-11-22 21:01:25,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-22 21:01:25,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:01:25,411 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] [2021-11-22 21:01:25,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 21:01:25,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:01:25,626 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:01:25,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:01:25,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1248681017, now seen corresponding path program 1 times [2021-11-22 21:01:25,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:01:25,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635556212] [2021-11-22 21:01:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:01:25,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:01:25,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:01:25,631 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:01:25,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 21:01:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:01:26,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 21:01:26,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:01:26,435 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 21:01:26,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:01:26,699 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 21:01:26,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:01:26,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635556212] [2021-11-22 21:01:26,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635556212] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:01:26,700 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:01:26,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 21:01:26,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28857977] [2021-11-22 21:01:26,701 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:01:26,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 21:01:26,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:01:26,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 21:01:26,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:01:26,702 INFO L87 Difference]: Start difference. First operand 1559 states and 2016 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 21:01:26,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:01:26,829 INFO L93 Difference]: Finished difference Result 3112 states and 4025 transitions. [2021-11-22 21:01:26,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 21:01:26,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 39 [2021-11-22 21:01:26,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:01:26,834 INFO L225 Difference]: With dead ends: 3112 [2021-11-22 21:01:26,835 INFO L226 Difference]: Without dead ends: 1559 [2021-11-22 21:01:26,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 21:01:26,837 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 1 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 21:01:26,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1594 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 21:01:26,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2021-11-22 21:01:26,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1559. [2021-11-22 21:01:26,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1548 states have (on average 1.3016795865633075) internal successors, (2015), 1558 states have internal predecessors, (2015), 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 21:01:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2015 transitions. [2021-11-22 21:01:26,889 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2015 transitions. Word has length 39 [2021-11-22 21:01:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:01:26,889 INFO L470 AbstractCegarLoop]: Abstraction has 1559 states and 2015 transitions. [2021-11-22 21:01:26,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 21:01:26,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2015 transitions. [2021-11-22 21:01:26,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-22 21:01:26,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:01:26,891 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] [2021-11-22 21:01:26,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-22 21:01:27,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:01:27,104 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:01:27,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:01:27,105 INFO L85 PathProgramCache]: Analyzing trace with hash 802302981, now seen corresponding path program 1 times [2021-11-22 21:01:27,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:01:27,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266803970] [2021-11-22 21:01:27,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:01:27,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:01:27,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:01:27,107 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:01:27,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-22 21:01:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:01:27,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 21:01:27,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:01:27,819 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 21:01:27,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:01:28,135 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 21:01:28,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:01:28,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266803970] [2021-11-22 21:01:28,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266803970] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:01:28,135 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:01:28,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-22 21:01:28,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211393058] [2021-11-22 21:01:28,136 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:01:28,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 21:01:28,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:01:28,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 21:01:28,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:01:28,137 INFO L87 Difference]: Start difference. First operand 1559 states and 2015 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 21:01:28,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:01:28,382 INFO L93 Difference]: Finished difference Result 5352 states and 7006 transitions. [2021-11-22 21:01:28,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 21:01:28,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 39 [2021-11-22 21:01:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:01:28,398 INFO L225 Difference]: With dead ends: 5352 [2021-11-22 21:01:28,399 INFO L226 Difference]: Without dead ends: 3800 [2021-11-22 21:01:28,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:01:28,404 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 860 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 21:01:28,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 1759 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 21:01:28,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2021-11-22 21:01:28,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3718. [2021-11-22 21:01:28,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3718 states, 3707 states have (on average 1.3261397356352846) internal successors, (4916), 3717 states have internal predecessors, (4916), 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 21:01:28,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3718 states to 3718 states and 4916 transitions. [2021-11-22 21:01:28,543 INFO L78 Accepts]: Start accepts. Automaton has 3718 states and 4916 transitions. Word has length 39 [2021-11-22 21:01:28,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:01:28,543 INFO L470 AbstractCegarLoop]: Abstraction has 3718 states and 4916 transitions. [2021-11-22 21:01:28,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 21:01:28,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3718 states and 4916 transitions. [2021-11-22 21:01:28,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-22 21:01:28,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:01:28,547 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] [2021-11-22 21:01:28,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-22 21:01:28,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:01:28,759 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:01:28,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:01:28,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1306914335, now seen corresponding path program 1 times [2021-11-22 21:01:28,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:01:28,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340130146] [2021-11-22 21:01:28,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:01:28,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:01:28,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:01:28,762 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:01:28,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-22 21:01:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:01:29,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 21:01:29,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:01:29,442 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 21:01:29,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:01:29,740 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 21:01:29,740 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:01:29,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340130146] [2021-11-22 21:01:29,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340130146] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:01:29,741 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:01:29,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 21:01:29,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998530611] [2021-11-22 21:01:29,741 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:01:29,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 21:01:29,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:01:29,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 21:01:29,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 21:01:29,742 INFO L87 Difference]: Start difference. First operand 3718 states and 4916 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 21:01:30,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:01:30,211 INFO L93 Difference]: Finished difference Result 14764 states and 19496 transitions. [2021-11-22 21:01:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 21:01:30,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 43 [2021-11-22 21:01:30,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:01:30,253 INFO L225 Difference]: With dead ends: 14764 [2021-11-22 21:01:30,253 INFO L226 Difference]: Without dead ends: 11054 [2021-11-22 21:01:30,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 21:01:30,264 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 2072 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 21:01:30,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2072 Valid, 4038 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 21:01:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11054 states. [2021-11-22 21:01:30,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11054 to 3742. [2021-11-22 21:01:30,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3731 states have (on average 1.32404181184669) internal successors, (4940), 3741 states have internal predecessors, (4940), 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 21:01:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 4940 transitions. [2021-11-22 21:01:30,516 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 4940 transitions. Word has length 43 [2021-11-22 21:01:30,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:01:30,516 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 4940 transitions. [2021-11-22 21:01:30,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 21:01:30,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 4940 transitions. [2021-11-22 21:01:30,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 21:01:30,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:01:30,518 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] [2021-11-22 21:01:30,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-22 21:01:30,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:01:30,751 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:01:30,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:01:30,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1201966377, now seen corresponding path program 1 times [2021-11-22 21:01:30,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:01:30,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886674337] [2021-11-22 21:01:30,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:01:30,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:01:30,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:01:30,753 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:01:30,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-22 21:01:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:01:31,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 21:01:31,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:01:31,446 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 21:01:31,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:01:31,727 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 21:01:31,727 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:01:31,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886674337] [2021-11-22 21:01:31,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886674337] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:01:31,727 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:01:31,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 21:01:31,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815116758] [2021-11-22 21:01:31,728 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:01:31,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 21:01:31,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:01:31,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 21:01:31,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 21:01:31,729 INFO L87 Difference]: Start difference. First operand 3742 states and 4940 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 21:01:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:01:32,386 INFO L93 Difference]: Finished difference Result 12604 states and 16672 transitions. [2021-11-22 21:01:32,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 21:01:32,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 44 [2021-11-22 21:01:32,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:01:32,435 INFO L225 Difference]: With dead ends: 12604 [2021-11-22 21:01:32,436 INFO L226 Difference]: Without dead ends: 8870 [2021-11-22 21:01:32,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 21:01:32,445 INFO L933 BasicCegarLoop]: 919 mSDtfsCounter, 1553 mSDsluCounter, 2749 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 3668 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 21:01:32,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1553 Valid, 3668 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 21:01:32,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8870 states. [2021-11-22 21:01:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8870 to 3766. [2021-11-22 21:01:32,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3766 states, 3755 states have (on average 1.321970705725699) internal successors, (4964), 3765 states have internal predecessors, (4964), 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 21:01:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 4964 transitions. [2021-11-22 21:01:32,705 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 4964 transitions. Word has length 44 [2021-11-22 21:01:32,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:01:32,707 INFO L470 AbstractCegarLoop]: Abstraction has 3766 states and 4964 transitions. [2021-11-22 21:01:32,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 21:01:32,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 4964 transitions. [2021-11-22 21:01:32,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 21:01:32,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:01:32,708 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] [2021-11-22 21:01:32,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-22 21:01:32,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:01:32,926 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:01:32,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:01:32,927 INFO L85 PathProgramCache]: Analyzing trace with hash 570834728, now seen corresponding path program 1 times [2021-11-22 21:01:32,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:01:32,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784339152] [2021-11-22 21:01:32,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:01:32,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:01:32,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:01:32,929 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:01:32,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-22 21:01:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:01:33,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 21:01:33,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:01:33,678 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 21:01:33,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:01:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:01:33,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:01:33,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784339152] [2021-11-22 21:01:33,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784339152] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:01:33,836 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:01:33,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 21:01:33,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193400246] [2021-11-22 21:01:33,837 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:01:33,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 21:01:33,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:01:33,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 21:01:33,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:01:33,838 INFO L87 Difference]: Start difference. First operand 3766 states and 4964 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 21:01:35,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:01:36,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:01:36,073 INFO L93 Difference]: Finished difference Result 12717 states and 16815 transitions. [2021-11-22 21:01:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 21:01:36,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-11-22 21:01:36,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:01:36,093 INFO L225 Difference]: With dead ends: 12717 [2021-11-22 21:01:36,094 INFO L226 Difference]: Without dead ends: 8959 [2021-11-22 21:01:36,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 21:01:36,101 INFO L933 BasicCegarLoop]: 961 mSDtfsCounter, 1373 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-22 21:01:36,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1373 Valid, 2652 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-22 21:01:36,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8959 states. [2021-11-22 21:01:36,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8959 to 3320. [2021-11-22 21:01:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 3309 states have (on average 1.3218495013599274) internal successors, (4374), 3319 states have internal predecessors, (4374), 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 21:01:36,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 4374 transitions. [2021-11-22 21:01:36,323 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 4374 transitions. Word has length 44 [2021-11-22 21:01:36,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:01:36,323 INFO L470 AbstractCegarLoop]: Abstraction has 3320 states and 4374 transitions. [2021-11-22 21:01:36,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 21:01:36,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 4374 transitions. [2021-11-22 21:01:36,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 21:01:36,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:01:36,325 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] [2021-11-22 21:01:36,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-22 21:01:36,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:01:36,545 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:01:36,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:01:36,546 INFO L85 PathProgramCache]: Analyzing trace with hash -450233626, now seen corresponding path program 1 times [2021-11-22 21:01:36,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:01:36,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141971979] [2021-11-22 21:01:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:01:36,547 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:01:36,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:01:36,548 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:01:36,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-22 21:01:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:01:36,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 21:01:36,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:01:37,395 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 21:01:37,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:01:37,595 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 21:01:37,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:01:37,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141971979] [2021-11-22 21:01:37,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141971979] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:01:37,596 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:01:37,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-22 21:01:37,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605694233] [2021-11-22 21:01:37,596 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:01:37,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 21:01:37,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:01:37,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 21:01:37,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 21:01:37,597 INFO L87 Difference]: Start difference. First operand 3320 states and 4374 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 21:01:39,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:01:39,672 INFO L93 Difference]: Finished difference Result 18556 states and 24481 transitions. [2021-11-22 21:01:39,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 21:01:39,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 44 [2021-11-22 21:01:39,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:01:39,706 INFO L225 Difference]: With dead ends: 18556 [2021-11-22 21:01:39,707 INFO L226 Difference]: Without dead ends: 16624 [2021-11-22 21:01:39,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 21:01:39,715 INFO L933 BasicCegarLoop]: 1119 mSDtfsCounter, 2777 mSDsluCounter, 3349 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2777 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 21:01:39,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2777 Valid, 4468 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-22 21:01:39,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16624 states. [2021-11-22 21:01:40,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16624 to 3404. [2021-11-22 21:01:40,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3404 states, 3393 states have (on average 1.3138815207780725) internal successors, (4458), 3403 states have internal predecessors, (4458), 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 21:01:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 4458 transitions. [2021-11-22 21:01:40,023 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 4458 transitions. Word has length 44 [2021-11-22 21:01:40,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:01:40,023 INFO L470 AbstractCegarLoop]: Abstraction has 3404 states and 4458 transitions. [2021-11-22 21:01:40,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 21:01:40,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 4458 transitions. [2021-11-22 21:01:40,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 21:01:40,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:01:40,024 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] [2021-11-22 21:01:40,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-22 21:01:40,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:01:40,248 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:01:40,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:01:40,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2139177368, now seen corresponding path program 1 times [2021-11-22 21:01:40,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:01:40,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189262272] [2021-11-22 21:01:40,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:01:40,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:01:40,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:01:40,250 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:01:40,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-22 21:01:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:01:40,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 21:01:40,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:01:41,334 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 21:01:41,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:01:41,975 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 21:01:41,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:01:41,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189262272] [2021-11-22 21:01:41,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189262272] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:01:41,975 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:01:41,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-22 21:01:41,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938854130] [2021-11-22 21:01:41,977 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:01:41,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 21:01:41,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:01:41,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 21:01:41,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-22 21:01:41,978 INFO L87 Difference]: Start difference. First operand 3404 states and 4458 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 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 21:01:43,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:01:43,716 INFO L93 Difference]: Finished difference Result 14145 states and 18602 transitions. [2021-11-22 21:01:43,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 21:01:43,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 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 44 [2021-11-22 21:01:43,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:01:43,737 INFO L225 Difference]: With dead ends: 14145 [2021-11-22 21:01:43,737 INFO L226 Difference]: Without dead ends: 12165 [2021-11-22 21:01:43,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 21:01:43,747 INFO L933 BasicCegarLoop]: 902 mSDtfsCounter, 2714 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2714 SdHoareTripleChecker+Valid, 3310 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 21:01:43,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2714 Valid, 3310 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 21:01:43,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12165 states. [2021-11-22 21:01:44,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12165 to 10564. [2021-11-22 21:01:44,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10564 states, 10553 states have (on average 1.3128020468113333) internal successors, (13854), 10563 states have internal predecessors, (13854), 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 21:01:44,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10564 states to 10564 states and 13854 transitions. [2021-11-22 21:01:44,438 INFO L78 Accepts]: Start accepts. Automaton has 10564 states and 13854 transitions. Word has length 44 [2021-11-22 21:01:44,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:01:44,439 INFO L470 AbstractCegarLoop]: Abstraction has 10564 states and 13854 transitions. [2021-11-22 21:01:44,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 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 21:01:44,439 INFO L276 IsEmpty]: Start isEmpty. Operand 10564 states and 13854 transitions. [2021-11-22 21:01:44,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 21:01:44,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:01:44,440 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 21:01:44,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-22 21:01:44,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:01:44,649 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:01:44,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:01:44,649 INFO L85 PathProgramCache]: Analyzing trace with hash 969429178, now seen corresponding path program 1 times [2021-11-22 21:01:44,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:01:44,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506789684] [2021-11-22 21:01:44,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:01:44,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:01:44,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:01:44,651 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:01:44,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-22 21:01:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:01:45,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 21:01:45,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:01:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:01:45,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:01:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:01:45,622 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:01:45,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506789684] [2021-11-22 21:01:45,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506789684] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:01:45,622 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:01:45,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-22 21:01:45,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523190831] [2021-11-22 21:01:45,622 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:01:45,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 21:01:45,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:01:45,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 21:01:45,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 21:01:45,623 INFO L87 Difference]: Start difference. First operand 10564 states and 13854 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 21:01:49,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:01:50,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:02:02,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:02:02,662 INFO L93 Difference]: Finished difference Result 119416 states and 158490 transitions. [2021-11-22 21:02:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 21:02:02,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 45 [2021-11-22 21:02:02,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:02:02,943 INFO L225 Difference]: With dead ends: 119416 [2021-11-22 21:02:02,943 INFO L226 Difference]: Without dead ends: 108860 [2021-11-22 21:02:02,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-22 21:02:02,989 INFO L933 BasicCegarLoop]: 2407 mSDtfsCounter, 4536 mSDsluCounter, 8213 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4536 SdHoareTripleChecker+Valid, 10620 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-22 21:02:02,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4536 Valid, 10620 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-11-22 21:02:03,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108860 states. [2021-11-22 21:02:04,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108860 to 10480. [2021-11-22 21:02:04,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10480 states, 10469 states have (on average 1.3049957015951859) internal successors, (13662), 10479 states have internal predecessors, (13662), 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 21:02:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10480 states to 10480 states and 13662 transitions. [2021-11-22 21:02:04,588 INFO L78 Accepts]: Start accepts. Automaton has 10480 states and 13662 transitions. Word has length 45 [2021-11-22 21:02:04,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:02:04,588 INFO L470 AbstractCegarLoop]: Abstraction has 10480 states and 13662 transitions. [2021-11-22 21:02:04,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 21:02:04,589 INFO L276 IsEmpty]: Start isEmpty. Operand 10480 states and 13662 transitions. [2021-11-22 21:02:04,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-22 21:02:04,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:02:04,590 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] [2021-11-22 21:02:04,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-22 21:02:04,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:02:04,792 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:02:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:02:04,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1842859505, now seen corresponding path program 1 times [2021-11-22 21:02:04,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:02:04,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768890322] [2021-11-22 21:02:04,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:02:04,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:02:04,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:02:04,794 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:02:04,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-22 21:02:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:02:05,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 21:02:05,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:02:05,546 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 21:02:05,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:02:05,806 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 21:02:05,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:02:05,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768890322] [2021-11-22 21:02:05,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768890322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:02:05,807 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:02:05,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-22 21:02:05,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263429209] [2021-11-22 21:02:05,807 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:02:05,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 21:02:05,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:02:05,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 21:02:05,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:02:05,808 INFO L87 Difference]: Start difference. First operand 10480 states and 13662 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 21:02:07,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:02:07,609 INFO L93 Difference]: Finished difference Result 21408 states and 28228 transitions. [2021-11-22 21:02:07,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 21:02:07,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 51 [2021-11-22 21:02:07,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:02:07,628 INFO L225 Difference]: With dead ends: 21408 [2021-11-22 21:02:07,628 INFO L226 Difference]: Without dead ends: 10936 [2021-11-22 21:02:07,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:02:07,645 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 0 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 21:02:07,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1550 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 21:02:07,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10936 states. [2021-11-22 21:02:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10936 to 10936. [2021-11-22 21:02:08,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10936 states, 10925 states have (on average 1.2922654462242562) internal successors, (14118), 10935 states have internal predecessors, (14118), 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 21:02:08,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10936 states to 10936 states and 14118 transitions. [2021-11-22 21:02:08,967 INFO L78 Accepts]: Start accepts. Automaton has 10936 states and 14118 transitions. Word has length 51 [2021-11-22 21:02:08,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:02:08,967 INFO L470 AbstractCegarLoop]: Abstraction has 10936 states and 14118 transitions. [2021-11-22 21:02:08,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 21:02:08,967 INFO L276 IsEmpty]: Start isEmpty. Operand 10936 states and 14118 transitions. [2021-11-22 21:02:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-22 21:02:08,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:02:08,969 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] [2021-11-22 21:02:08,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-22 21:02:09,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:02:09,185 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:02:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:02:09,186 INFO L85 PathProgramCache]: Analyzing trace with hash -17797885, now seen corresponding path program 1 times [2021-11-22 21:02:09,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:02:09,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110912003] [2021-11-22 21:02:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:02:09,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:02:09,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:02:09,188 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:02:09,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-22 21:02:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:02:09,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 21:02:09,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:02:09,996 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 21:02:09,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:02:10,161 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 21:02:10,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:02:10,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110912003] [2021-11-22 21:02:10,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110912003] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:02:10,162 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:02:10,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 21:02:10,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109984385] [2021-11-22 21:02:10,162 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:02:10,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 21:02:10,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:02:10,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 21:02:10,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:02:10,163 INFO L87 Difference]: Start difference. First operand 10936 states and 14118 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 21:02:11,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:02:15,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:02:15,837 INFO L93 Difference]: Finished difference Result 41724 states and 53969 transitions. [2021-11-22 21:02:15,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 21:02:15,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2021-11-22 21:02:15,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:02:15,886 INFO L225 Difference]: With dead ends: 41724 [2021-11-22 21:02:15,886 INFO L226 Difference]: Without dead ends: 30796 [2021-11-22 21:02:15,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 21:02:15,905 INFO L933 BasicCegarLoop]: 1054 mSDtfsCounter, 1426 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-22 21:02:15,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1426 Valid, 2838 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-22 21:02:15,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30796 states. [2021-11-22 21:02:17,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30796 to 10193. [2021-11-22 21:02:17,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10193 states, 10182 states have (on average 1.2909055195442938) internal successors, (13144), 10192 states have internal predecessors, (13144), 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 21:02:17,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10193 states to 10193 states and 13144 transitions. [2021-11-22 21:02:17,282 INFO L78 Accepts]: Start accepts. Automaton has 10193 states and 13144 transitions. Word has length 52 [2021-11-22 21:02:17,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:02:17,282 INFO L470 AbstractCegarLoop]: Abstraction has 10193 states and 13144 transitions. [2021-11-22 21:02:17,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 21:02:17,283 INFO L276 IsEmpty]: Start isEmpty. Operand 10193 states and 13144 transitions. [2021-11-22 21:02:17,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-22 21:02:17,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:02:17,284 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] [2021-11-22 21:02:17,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-22 21:02:17,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:02:17,498 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:02:17,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:02:17,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1038866239, now seen corresponding path program 1 times [2021-11-22 21:02:17,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:02:17,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579409286] [2021-11-22 21:02:17,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:02:17,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:02:17,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:02:17,501 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:02:17,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-22 21:02:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:02:17,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 21:02:18,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:02:18,344 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 21:02:18,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:02:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:02:18,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:02:18,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579409286] [2021-11-22 21:02:18,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579409286] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:02:18,531 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:02:18,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-22 21:02:18,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036483739] [2021-11-22 21:02:18,531 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:02:18,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 21:02:18,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:02:18,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 21:02:18,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 21:02:18,532 INFO L87 Difference]: Start difference. First operand 10193 states and 13144 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 21:02:28,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:02:28,098 INFO L93 Difference]: Finished difference Result 67407 states and 87530 transitions. [2021-11-22 21:02:28,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 21:02:28,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 52 [2021-11-22 21:02:28,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:02:28,206 INFO L225 Difference]: With dead ends: 67407 [2021-11-22 21:02:28,206 INFO L226 Difference]: Without dead ends: 61856 [2021-11-22 21:02:28,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 21:02:28,227 INFO L933 BasicCegarLoop]: 1507 mSDtfsCounter, 2065 mSDsluCounter, 3778 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 5285 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 21:02:28,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2065 Valid, 5285 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 21:02:28,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61856 states. [2021-11-22 21:02:29,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61856 to 10373. [2021-11-22 21:02:29,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10373 states, 10362 states have (on average 1.2858521520941903) internal successors, (13324), 10372 states have internal predecessors, (13324), 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 21:02:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10373 states to 10373 states and 13324 transitions. [2021-11-22 21:02:29,876 INFO L78 Accepts]: Start accepts. Automaton has 10373 states and 13324 transitions. Word has length 52 [2021-11-22 21:02:29,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:02:29,877 INFO L470 AbstractCegarLoop]: Abstraction has 10373 states and 13324 transitions. [2021-11-22 21:02:29,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 21:02:29,877 INFO L276 IsEmpty]: Start isEmpty. Operand 10373 states and 13324 transitions. [2021-11-22 21:02:29,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-22 21:02:29,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:02:29,878 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] [2021-11-22 21:02:29,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-22 21:02:30,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:02:30,092 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:02:30,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:02:30,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1567157315, now seen corresponding path program 1 times [2021-11-22 21:02:30,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:02:30,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986589779] [2021-11-22 21:02:30,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:02:30,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:02:30,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:02:30,094 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:02:30,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-22 21:02:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:02:30,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 21:02:30,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:02:30,753 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 21:02:30,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:02:30,871 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 21:02:30,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:02:30,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986589779] [2021-11-22 21:02:30,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986589779] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:02:30,871 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:02:30,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-22 21:02:30,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426410720] [2021-11-22 21:02:30,872 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:02:30,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 21:02:30,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:02:30,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 21:02:30,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:02:30,873 INFO L87 Difference]: Start difference. First operand 10373 states and 13324 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:02:33,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:02:33,676 INFO L93 Difference]: Finished difference Result 25786 states and 33209 transitions. [2021-11-22 21:02:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 21:02:33,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-22 21:02:33,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:02:33,706 INFO L225 Difference]: With dead ends: 25786 [2021-11-22 21:02:33,706 INFO L226 Difference]: Without dead ends: 20145 [2021-11-22 21:02:33,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:02:33,721 INFO L933 BasicCegarLoop]: 914 mSDtfsCounter, 932 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 2343 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 21:02:33,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 2343 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 21:02:33,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20145 states. [2021-11-22 21:02:35,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20145 to 10445. [2021-11-22 21:02:35,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10445 states, 10434 states have (on average 1.2850297105616255) internal successors, (13408), 10444 states have internal predecessors, (13408), 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 21:02:35,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10445 states to 10445 states and 13408 transitions. [2021-11-22 21:02:35,113 INFO L78 Accepts]: Start accepts. Automaton has 10445 states and 13408 transitions. Word has length 52 [2021-11-22 21:02:35,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:02:35,113 INFO L470 AbstractCegarLoop]: Abstraction has 10445 states and 13408 transitions. [2021-11-22 21:02:35,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:02:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 10445 states and 13408 transitions. [2021-11-22 21:02:35,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 21:02:35,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:02:35,114 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 21:02:35,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-22 21:02:35,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:02:35,317 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:02:35,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:02:35,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1636815281, now seen corresponding path program 1 times [2021-11-22 21:02:35,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:02:35,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973690613] [2021-11-22 21:02:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:02:35,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:02:35,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:02:35,319 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:02:35,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-22 21:02:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:02:35,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 21:02:35,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:02:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:02:36,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:02:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:02:36,874 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:02:36,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973690613] [2021-11-22 21:02:36,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973690613] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 21:02:36,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 21:02:36,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-22 21:02:36,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700610164] [2021-11-22 21:02:36,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 21:02:36,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 21:02:36,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:02:36,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 21:02:36,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-22 21:02:36,875 INFO L87 Difference]: Start difference. First operand 10445 states and 13408 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 21:02:39,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:02:39,530 INFO L93 Difference]: Finished difference Result 21338 states and 27720 transitions. [2021-11-22 21:02:39,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 21:02:39,532 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 53 [2021-11-22 21:02:39,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:02:39,548 INFO L225 Difference]: With dead ends: 21338 [2021-11-22 21:02:39,548 INFO L226 Difference]: Without dead ends: 10901 [2021-11-22 21:02:39,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-22 21:02:39,560 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 0 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 21:02:39,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2574 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 21:02:39,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10901 states. [2021-11-22 21:02:40,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10901 to 10901. [2021-11-22 21:02:40,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10901 states, 10890 states have (on average 1.2730945821854913) internal successors, (13864), 10900 states have internal predecessors, (13864), 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 21:02:41,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10901 states to 10901 states and 13864 transitions. [2021-11-22 21:02:41,008 INFO L78 Accepts]: Start accepts. Automaton has 10901 states and 13864 transitions. Word has length 53 [2021-11-22 21:02:41,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:02:41,008 INFO L470 AbstractCegarLoop]: Abstraction has 10901 states and 13864 transitions. [2021-11-22 21:02:41,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 21:02:41,008 INFO L276 IsEmpty]: Start isEmpty. Operand 10901 states and 13864 transitions. [2021-11-22 21:02:41,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-22 21:02:41,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:02:41,009 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] [2021-11-22 21:02:41,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-22 21:02:41,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:02:41,214 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:02:41,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:02:41,214 INFO L85 PathProgramCache]: Analyzing trace with hash -289494270, now seen corresponding path program 1 times [2021-11-22 21:02:41,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:02:41,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641002381] [2021-11-22 21:02:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:02:41,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:02:41,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:02:41,216 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:02:41,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-22 21:02:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:02:41,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 21:02:41,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:02:42,445 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 21:02:42,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:02:43,155 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 21:02:43,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:02:43,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641002381] [2021-11-22 21:02:43,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641002381] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:02:43,156 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:02:43,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-22 21:02:43,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312197450] [2021-11-22 21:02:43,156 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:02:43,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 21:02:43,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:02:43,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 21:02:43,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-22 21:02:43,159 INFO L87 Difference]: Start difference. First operand 10901 states and 13864 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 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 21:02:49,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:02:49,136 INFO L93 Difference]: Finished difference Result 44925 states and 57168 transitions. [2021-11-22 21:02:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 21:02:49,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 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 54 [2021-11-22 21:02:49,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:02:49,199 INFO L225 Difference]: With dead ends: 44925 [2021-11-22 21:02:49,199 INFO L226 Difference]: Without dead ends: 38977 [2021-11-22 21:02:49,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 21:02:49,217 INFO L933 BasicCegarLoop]: 964 mSDtfsCounter, 2828 mSDsluCounter, 2507 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2828 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 21:02:49,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2828 Valid, 3471 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 21:02:49,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38977 states. [2021-11-22 21:02:54,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38977 to 33720. [2021-11-22 21:02:54,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33720 states, 33709 states have (on average 1.271529858494764) internal successors, (42862), 33719 states have internal predecessors, (42862), 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 21:02:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33720 states to 33720 states and 42862 transitions. [2021-11-22 21:02:54,095 INFO L78 Accepts]: Start accepts. Automaton has 33720 states and 42862 transitions. Word has length 54 [2021-11-22 21:02:54,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:02:54,095 INFO L470 AbstractCegarLoop]: Abstraction has 33720 states and 42862 transitions. [2021-11-22 21:02:54,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 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 21:02:54,095 INFO L276 IsEmpty]: Start isEmpty. Operand 33720 states and 42862 transitions. [2021-11-22 21:02:54,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 21:02:54,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:02:54,097 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:54,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-22 21:02:54,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:02:54,301 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:02:54,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:02:54,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1196811633, now seen corresponding path program 2 times [2021-11-22 21:02:54,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:02:54,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215169675] [2021-11-22 21:02:54,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 21:02:54,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:02:54,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:02:54,304 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:02:54,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-22 21:02:54,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-22 21:02:54,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 21:02:54,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 21:02:54,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:02:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-22 21:02:55,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:02:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-22 21:02:55,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:02:55,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215169675] [2021-11-22 21:02:55,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215169675] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:02:55,308 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:02:55,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 21:02:55,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303307649] [2021-11-22 21:02:55,308 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:02:55,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 21:02:55,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:02:55,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 21:02:55,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 21:02:55,309 INFO L87 Difference]: Start difference. First operand 33720 states and 42862 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 21:02:57,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:03:12,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:03:12,655 INFO L93 Difference]: Finished difference Result 122441 states and 156168 transitions. [2021-11-22 21:03:12,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 21:03:12,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-22 21:03:12,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:03:12,834 INFO L225 Difference]: With dead ends: 122441 [2021-11-22 21:03:12,834 INFO L226 Difference]: Without dead ends: 88729 [2021-11-22 21:03:12,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 21:03:12,878 INFO L933 BasicCegarLoop]: 1277 mSDtfsCounter, 926 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 2996 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-22 21:03:12,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [926 Valid, 2996 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2021-11-22 21:03:12,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88729 states. [2021-11-22 21:03:18,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88729 to 32752. [2021-11-22 21:03:18,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32752 states, 32741 states have (on average 1.2694786353501726) internal successors, (41564), 32751 states have internal predecessors, (41564), 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 21:03:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32752 states to 32752 states and 41564 transitions. [2021-11-22 21:03:19,010 INFO L78 Accepts]: Start accepts. Automaton has 32752 states and 41564 transitions. Word has length 55 [2021-11-22 21:03:19,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:03:19,010 INFO L470 AbstractCegarLoop]: Abstraction has 32752 states and 41564 transitions. [2021-11-22 21:03:19,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 21:03:19,011 INFO L276 IsEmpty]: Start isEmpty. Operand 32752 states and 41564 transitions. [2021-11-22 21:03:19,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 21:03:19,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:03:19,012 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-22 21:03:19,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-22 21:03:19,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:03:19,213 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:03:19,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:03:19,213 INFO L85 PathProgramCache]: Analyzing trace with hash 969627250, now seen corresponding path program 1 times [2021-11-22 21:03:19,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:03:19,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027310355] [2021-11-22 21:03:19,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:03:19,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:03:19,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:03:19,215 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:03:19,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-22 21:03:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:03:19,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 21:03:19,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:03:20,049 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:03:20,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:03:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:03:20,372 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:03:20,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027310355] [2021-11-22 21:03:20,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027310355] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:03:20,373 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:03:20,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 21:03:20,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081525492] [2021-11-22 21:03:20,373 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:03:20,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 21:03:20,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:03:20,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 21:03:20,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 21:03:20,374 INFO L87 Difference]: Start difference. First operand 32752 states and 41564 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 21:03:26,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:03:26,387 INFO L93 Difference]: Finished difference Result 65644 states and 83301 transitions. [2021-11-22 21:03:26,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 21:03:26,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-22 21:03:26,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:03:26,447 INFO L225 Difference]: With dead ends: 65644 [2021-11-22 21:03:26,447 INFO L226 Difference]: Without dead ends: 32897 [2021-11-22 21:03:26,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 21:03:26,479 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 31 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 21:03:26,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 2681 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 21:03:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32897 states. [2021-11-22 21:03:31,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32897 to 32761. [2021-11-22 21:03:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32761 states, 32750 states have (on average 1.2693740458015268) internal successors, (41572), 32760 states have internal predecessors, (41572), 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 21:03:31,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32761 states to 32761 states and 41572 transitions. [2021-11-22 21:03:31,932 INFO L78 Accepts]: Start accepts. Automaton has 32761 states and 41572 transitions. Word has length 55 [2021-11-22 21:03:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:03:31,932 INFO L470 AbstractCegarLoop]: Abstraction has 32761 states and 41572 transitions. [2021-11-22 21:03:31,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 21:03:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 32761 states and 41572 transitions. [2021-11-22 21:03:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-22 21:03:31,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:03:31,933 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:31,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-22 21:03:32,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-22 21:03:32,134 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 21:03:32,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:03:32,135 INFO L85 PathProgramCache]: Analyzing trace with hash 975989437, now seen corresponding path program 1 times [2021-11-22 21:03:32,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 21:03:32,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627860830] [2021-11-22 21:03:32,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:03:32,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 21:03:32,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-22 21:03:32,136 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 21:03:32,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-22 21:03:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:03:32,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 21:03:32,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 21:03:33,071 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-22 21:03:33,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 21:03:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-22 21:03:33,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 21:03:33,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627860830] [2021-11-22 21:03:33,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627860830] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 21:03:33,236 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:03:33,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-22 21:03:33,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943232017] [2021-11-22 21:03:33,236 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 21:03:33,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 21:03:33,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 21:03:33,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 21:03:33,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 21:03:33,237 INFO L87 Difference]: Start difference. First operand 32761 states and 41572 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 21:03:36,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:03:37,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:03:39,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:03:41,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []