./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6932181a2a9c8d4d7c700844e1db6a95829edf2ea099e17754a10b04a114b5cd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:20:49,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:20:49,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:20:49,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:20:49,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:20:49,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:20:49,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:20:49,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:20:49,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:20:49,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:20:49,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:20:49,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:20:49,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:20:49,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:20:49,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:20:49,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:20:49,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:20:49,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:20:49,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:20:49,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:20:49,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:20:49,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:20:49,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:20:49,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:20:49,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:20:49,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:20:49,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:20:49,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:20:49,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:20:49,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:20:49,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:20:49,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:20:49,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:20:49,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:20:49,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:20:49,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:20:49,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:20:49,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:20:49,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:20:49,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:20:49,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:20:49,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:20:49,992 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:20:49,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:20:49,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:20:49,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:20:49,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:20:49,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:20:49,997 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:20:49,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:20:49,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:20:49,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:20:49,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:20:49,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:20:49,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:20:49,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:20:49,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:20:49,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:20:49,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:20:49,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:20:50,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:20:50,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:20:50,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:20:50,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:20:50,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:20:50,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:20:50,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:20:50,001 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:20:50,001 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:20:50,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:20:50,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:20:50,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6932181a2a9c8d4d7c700844e1db6a95829edf2ea099e17754a10b04a114b5cd [2021-11-07 16:20:50,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:20:50,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:20:50,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:20:50,195 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:20:50,196 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:20:50,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2021-11-07 16:20:50,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6068ae87c/9ee8eaeb948f43a5a843f6c2f545670c/FLAGe01241979 [2021-11-07 16:20:50,834 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:20:50,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2021-11-07 16:20:50,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6068ae87c/9ee8eaeb948f43a5a843f6c2f545670c/FLAGe01241979 [2021-11-07 16:20:51,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6068ae87c/9ee8eaeb948f43a5a843f6c2f545670c [2021-11-07 16:20:51,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:20:51,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:20:51,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:20:51,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:20:51,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:20:51,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:20:51" (1/1) ... [2021-11-07 16:20:51,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e734f22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:20:51, skipping insertion in model container [2021-11-07 16:20:51,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:20:51" (1/1) ... [2021-11-07 16:20:51,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:20:51,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:20:52,200 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i[213066,213079] [2021-11-07 16:20:52,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:20:52,306 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:20:52,565 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i[213066,213079] [2021-11-07 16:20:52,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:20:52,631 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:20:52,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:20:52 WrapperNode [2021-11-07 16:20:52,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:20:52,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:20:52,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:20:52,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:20:52,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:20:52" (1/1) ... [2021-11-07 16:20:52,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:20:52" (1/1) ... [2021-11-07 16:20:53,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:20:53,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:20:53,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:20:53,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:20:53,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:20:52" (1/1) ... [2021-11-07 16:20:53,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:20:52" (1/1) ... [2021-11-07 16:20:53,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:20:52" (1/1) ... [2021-11-07 16:20:53,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:20:52" (1/1) ... [2021-11-07 16:20:54,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:20:52" (1/1) ... [2021-11-07 16:20:54,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:20:52" (1/1) ... [2021-11-07 16:20:54,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:20:52" (1/1) ... [2021-11-07 16:20:55,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:20:55,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:20:55,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:20:55,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:20:55,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:20:52" (1/1) ... [2021-11-07 16:20:55,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:20:55,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:20:55,044 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) [2021-11-07 16:20:55,055 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 [2021-11-07 16:20:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure gr_finish_request [2021-11-07 16:20:55,078 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_finish_request [2021-11-07 16:20:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:20:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:20:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:20:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dequeue [2021-11-07 16:20:55,079 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dequeue [2021-11-07 16:20:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:20:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep0_setup [2021-11-07 16:20:55,080 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep0_setup [2021-11-07 16:20:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:20:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:20:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:20:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:20:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:20:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:20:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:20:55,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:20:55,081 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dma_advance [2021-11-07 16:20:55,081 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dma_advance [2021-11-07 16:20:55,081 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 16:20:55,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 16:20:55,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:20:55,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:20:55,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:21:16,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:21:16,914 INFO L299 CfgBuilder]: Removed 6866 assume(true) statements. [2021-11-07 16:21:16,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:21:16 BoogieIcfgContainer [2021-11-07 16:21:16,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:21:16,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:21:16,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:21:16,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:21:16,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:20:51" (1/3) ... [2021-11-07 16:21:16,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3dc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:21:16, skipping insertion in model container [2021-11-07 16:21:16,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:20:52" (2/3) ... [2021-11-07 16:21:16,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3dc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:21:16, skipping insertion in model container [2021-11-07 16:21:16,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:21:16" (3/3) ... [2021-11-07 16:21:16,931 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2021-11-07 16:21:16,939 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:21:16,940 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2021-11-07 16:21:17,002 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:21:17,016 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 [2021-11-07 16:21:17,017 INFO L340 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2021-11-07 16:21:17,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 6972 states, 6832 states have (on average 1.4111533957845432) internal successors, (9641), 6954 states have internal predecessors, (9641), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-07 16:21:17,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 16:21:17,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:21:17,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:21:17,145 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-07 16:21:17,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:21:17,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2097595857, now seen corresponding path program 1 times [2021-11-07 16:21:17,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:21:17,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850112196] [2021-11-07 16:21:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:21:17,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:21:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:21:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:21:17,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:21:17,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850112196] [2021-11-07 16:21:17,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850112196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:21:17,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:21:17,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 16:21:17,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394996107] [2021-11-07 16:21:17,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:21:17,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 16:21:17,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:21:17,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 16:21:17,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 16:21:17,787 INFO L87 Difference]: Start difference. First operand has 6972 states, 6832 states have (on average 1.4111533957845432) internal successors, (9641), 6954 states have internal predecessors, (9641), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:18,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:21:18,011 INFO L93 Difference]: Finished difference Result 13940 states and 19527 transitions. [2021-11-07 16:21:18,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 16:21:18,013 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 16:21:18,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:21:18,061 INFO L225 Difference]: With dead ends: 13940 [2021-11-07 16:21:18,062 INFO L226 Difference]: Without dead ends: 6918 [2021-11-07 16:21:18,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 16:21:18,094 INFO L933 BasicCegarLoop]: 9423 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9423 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 16:21:18,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9423 Invalid, 0 Unknown, 0 Unchecked, 15.19ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 16:21:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6918 states. [2021-11-07 16:21:18,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6918 to 6918. [2021-11-07 16:21:18,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6918 states, 6779 states have (on average 1.3600826080542854) internal successors, (9220), 6900 states have internal predecessors, (9220), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-07 16:21:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6918 states to 6918 states and 9320 transitions. [2021-11-07 16:21:18,343 INFO L78 Accepts]: Start accepts. Automaton has 6918 states and 9320 transitions. Word has length 55 [2021-11-07 16:21:18,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:21:18,344 INFO L470 AbstractCegarLoop]: Abstraction has 6918 states and 9320 transitions. [2021-11-07 16:21:18,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:18,344 INFO L276 IsEmpty]: Start isEmpty. Operand 6918 states and 9320 transitions. [2021-11-07 16:21:18,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 16:21:18,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:21:18,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:21:18,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:21:18,349 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-07 16:21:18,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:21:18,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2141064503, now seen corresponding path program 1 times [2021-11-07 16:21:18,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:21:18,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163243954] [2021-11-07 16:21:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:21:18,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:21:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:21:18,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:21:18,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:21:18,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163243954] [2021-11-07 16:21:18,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163243954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:21:18,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:21:18,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:21:18,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956529096] [2021-11-07 16:21:18,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:21:18,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:21:18,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:21:18,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:21:18,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:21:18,704 INFO L87 Difference]: Start difference. First operand 6918 states and 9320 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:19,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:21:19,209 INFO L93 Difference]: Finished difference Result 20263 states and 27301 transitions. [2021-11-07 16:21:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:21:19,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 16:21:19,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:21:19,265 INFO L225 Difference]: With dead ends: 20263 [2021-11-07 16:21:19,265 INFO L226 Difference]: Without dead ends: 13385 [2021-11-07 16:21:19,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:21:19,289 INFO L933 BasicCegarLoop]: 9367 mSDtfsCounter, 8743 mSDsluCounter, 9240 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8743 SdHoareTripleChecker+Valid, 18607 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.99ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 170.32ms IncrementalHoareTripleChecker+Time [2021-11-07 16:21:19,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8743 Valid, 18607 Invalid, 35 Unknown, 0 Unchecked, 35.99ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 170.32ms Time] [2021-11-07 16:21:19,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13385 states. [2021-11-07 16:21:19,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13385 to 13225. [2021-11-07 16:21:19,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13225 states, 13033 states have (on average 1.362004143328474) internal successors, (17751), 13191 states have internal predecessors, (17751), 98 states have call successors, (98), 10 states have call predecessors, (98), 10 states have return successors, (98), 94 states have call predecessors, (98), 98 states have call successors, (98) [2021-11-07 16:21:19,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13225 states to 13225 states and 17947 transitions. [2021-11-07 16:21:19,605 INFO L78 Accepts]: Start accepts. Automaton has 13225 states and 17947 transitions. Word has length 55 [2021-11-07 16:21:19,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:21:19,606 INFO L470 AbstractCegarLoop]: Abstraction has 13225 states and 17947 transitions. [2021-11-07 16:21:19,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:19,607 INFO L276 IsEmpty]: Start isEmpty. Operand 13225 states and 17947 transitions. [2021-11-07 16:21:19,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 16:21:19,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:21:19,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:21:19,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:21:19,617 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-07 16:21:19,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:21:19,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1284708256, now seen corresponding path program 1 times [2021-11-07 16:21:19,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:21:19,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566403809] [2021-11-07 16:21:19,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:21:19,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:21:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:21:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:21:20,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:21:20,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566403809] [2021-11-07 16:21:20,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566403809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:21:20,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:21:20,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:21:20,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219489923] [2021-11-07 16:21:20,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:21:20,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:21:20,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:21:20,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:21:20,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:21:20,192 INFO L87 Difference]: Start difference. First operand 13225 states and 17947 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:20,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:21:20,929 INFO L93 Difference]: Finished difference Result 44086 states and 59777 transitions. [2021-11-07 16:21:20,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:21:20,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-07 16:21:20,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:21:21,019 INFO L225 Difference]: With dead ends: 44086 [2021-11-07 16:21:21,019 INFO L226 Difference]: Without dead ends: 30901 [2021-11-07 16:21:21,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.13ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:21:21,059 INFO L933 BasicCegarLoop]: 13341 mSDtfsCounter, 12528 mSDsluCounter, 18665 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12551 SdHoareTripleChecker+Valid, 32006 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.91ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.18ms IncrementalHoareTripleChecker+Time [2021-11-07 16:21:21,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12551 Valid, 32006 Invalid, 89 Unknown, 0 Unchecked, 37.91ms Time], IncrementalHoareTripleChecker [10 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 107.18ms Time] [2021-11-07 16:21:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30901 states. [2021-11-07 16:21:21,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30901 to 23882. [2021-11-07 16:21:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23882 states, 23592 states have (on average 1.3636402170227195) internal successors, (32171), 23817 states have internal predecessors, (32171), 186 states have call successors, (186), 20 states have call predecessors, (186), 20 states have return successors, (186), 178 states have call predecessors, (186), 186 states have call successors, (186) [2021-11-07 16:21:21,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23882 states to 23882 states and 32543 transitions. [2021-11-07 16:21:21,768 INFO L78 Accepts]: Start accepts. Automaton has 23882 states and 32543 transitions. Word has length 93 [2021-11-07 16:21:21,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:21:21,769 INFO L470 AbstractCegarLoop]: Abstraction has 23882 states and 32543 transitions. [2021-11-07 16:21:21,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:21,770 INFO L276 IsEmpty]: Start isEmpty. Operand 23882 states and 32543 transitions. [2021-11-07 16:21:21,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 16:21:21,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:21:21,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:21:21,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:21:21,784 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-07 16:21:21,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:21:21,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1095671254, now seen corresponding path program 1 times [2021-11-07 16:21:21,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:21:21,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831905711] [2021-11-07 16:21:21,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:21:21,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:21:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:21:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:21:22,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:21:22,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831905711] [2021-11-07 16:21:22,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831905711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:21:22,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:21:22,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:21:22,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791769383] [2021-11-07 16:21:22,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:21:22,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:21:22,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:21:22,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:21:22,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:21:22,144 INFO L87 Difference]: Start difference. First operand 23882 states and 32543 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:23,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:21:23,160 INFO L93 Difference]: Finished difference Result 63838 states and 86783 transitions. [2021-11-07 16:21:23,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:21:23,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-07 16:21:23,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:21:23,275 INFO L225 Difference]: With dead ends: 63838 [2021-11-07 16:21:23,275 INFO L226 Difference]: Without dead ends: 46491 [2021-11-07 16:21:23,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.62ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:21:23,325 INFO L933 BasicCegarLoop]: 13333 mSDtfsCounter, 16488 mSDsluCounter, 18648 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16511 SdHoareTripleChecker+Valid, 31981 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.19ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 151.94ms IncrementalHoareTripleChecker+Time [2021-11-07 16:21:23,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16511 Valid, 31981 Invalid, 136 Unknown, 0 Unchecked, 45.19ms Time], IncrementalHoareTripleChecker [37 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 151.94ms Time] [2021-11-07 16:21:23,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46491 states. [2021-11-07 16:21:24,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46491 to 35355. [2021-11-07 16:21:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35355 states, 34977 states have (on average 1.3638390942619436) internal successors, (47703), 35261 states have internal predecessors, (47703), 264 states have call successors, (264), 30 states have call predecessors, (264), 30 states have return successors, (264), 252 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-07 16:21:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35355 states to 35355 states and 48231 transitions. [2021-11-07 16:21:24,264 INFO L78 Accepts]: Start accepts. Automaton has 35355 states and 48231 transitions. Word has length 94 [2021-11-07 16:21:24,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:21:24,265 INFO L470 AbstractCegarLoop]: Abstraction has 35355 states and 48231 transitions. [2021-11-07 16:21:24,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:24,265 INFO L276 IsEmpty]: Start isEmpty. Operand 35355 states and 48231 transitions. [2021-11-07 16:21:24,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 16:21:24,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:21:24,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:21:24,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 16:21:24,279 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-07 16:21:24,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:21:24,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1774642052, now seen corresponding path program 1 times [2021-11-07 16:21:24,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:21:24,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643501635] [2021-11-07 16:21:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:21:24,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:21:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:21:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:21:24,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:21:24,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643501635] [2021-11-07 16:21:24,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643501635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:21:24,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:21:24,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:21:24,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572106583] [2021-11-07 16:21:24,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:21:24,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:21:24,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:21:24,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:21:24,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:21:24,529 INFO L87 Difference]: Start difference. First operand 35355 states and 48231 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:25,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:21:25,854 INFO L93 Difference]: Finished difference Result 91769 states and 124923 transitions. [2021-11-07 16:21:25,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:21:25,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-07 16:21:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:21:26,057 INFO L225 Difference]: With dead ends: 91769 [2021-11-07 16:21:26,057 INFO L226 Difference]: Without dead ends: 62405 [2021-11-07 16:21:26,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.81ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:21:26,135 INFO L933 BasicCegarLoop]: 13334 mSDtfsCounter, 16502 mSDsluCounter, 22547 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16525 SdHoareTripleChecker+Valid, 35881 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.50ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 169.63ms IncrementalHoareTripleChecker+Time [2021-11-07 16:21:26,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16525 Valid, 35881 Invalid, 137 Unknown, 0 Unchecked, 55.50ms Time], IncrementalHoareTripleChecker [38 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 169.63ms Time] [2021-11-07 16:21:26,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62405 states. [2021-11-07 16:21:27,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62405 to 45846. [2021-11-07 16:21:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45846 states, 45390 states have (on average 1.3641110376734964) internal successors, (61917), 45725 states have internal predecessors, (61917), 332 states have call successors, (332), 40 states have call predecessors, (332), 40 states have return successors, (332), 316 states have call predecessors, (332), 332 states have call successors, (332) [2021-11-07 16:21:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45846 states to 45846 states and 62581 transitions. [2021-11-07 16:21:27,347 INFO L78 Accepts]: Start accepts. Automaton has 45846 states and 62581 transitions. Word has length 95 [2021-11-07 16:21:27,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:21:27,348 INFO L470 AbstractCegarLoop]: Abstraction has 45846 states and 62581 transitions. [2021-11-07 16:21:27,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:27,348 INFO L276 IsEmpty]: Start isEmpty. Operand 45846 states and 62581 transitions. [2021-11-07 16:21:27,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 16:21:27,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:21:27,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:21:27,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 16:21:27,362 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-07 16:21:27,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:21:27,363 INFO L85 PathProgramCache]: Analyzing trace with hash -269795952, now seen corresponding path program 1 times [2021-11-07 16:21:27,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:21:27,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299345953] [2021-11-07 16:21:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:21:27,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:21:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:21:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:21:27,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:21:27,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299345953] [2021-11-07 16:21:27,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299345953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:21:27,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:21:27,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:21:27,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293666313] [2021-11-07 16:21:27,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:21:27,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:21:27,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:21:27,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:21:27,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:21:27,810 INFO L87 Difference]: Start difference. First operand 45846 states and 62581 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:29,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:21:29,661 INFO L93 Difference]: Finished difference Result 148920 states and 203027 transitions. [2021-11-07 16:21:29,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:21:29,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 16:21:29,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:21:30,174 INFO L225 Difference]: With dead ends: 148920 [2021-11-07 16:21:30,175 INFO L226 Difference]: Without dead ends: 103114 [2021-11-07 16:21:30,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.60ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:21:30,260 INFO L933 BasicCegarLoop]: 13351 mSDtfsCounter, 12549 mSDsluCounter, 18629 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12572 SdHoareTripleChecker+Valid, 31980 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.77ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87.00ms IncrementalHoareTripleChecker+Time [2021-11-07 16:21:30,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12572 Valid, 31980 Invalid, 69 Unknown, 0 Unchecked, 41.77ms Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 87.00ms Time] [2021-11-07 16:21:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103114 states. [2021-11-07 16:21:32,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103114 to 82116. [2021-11-07 16:21:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82116 states, 81328 states have (on average 1.3657166043674995) internal successors, (111071), 81883 states have internal predecessors, (111071), 624 states have call successors, (624), 80 states have call predecessors, (624), 80 states have return successors, (624), 592 states have call predecessors, (624), 624 states have call successors, (624) [2021-11-07 16:21:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82116 states to 82116 states and 112319 transitions. [2021-11-07 16:21:32,418 INFO L78 Accepts]: Start accepts. Automaton has 82116 states and 112319 transitions. Word has length 96 [2021-11-07 16:21:32,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:21:32,418 INFO L470 AbstractCegarLoop]: Abstraction has 82116 states and 112319 transitions. [2021-11-07 16:21:32,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:32,419 INFO L276 IsEmpty]: Start isEmpty. Operand 82116 states and 112319 transitions. [2021-11-07 16:21:32,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 16:21:32,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:21:32,433 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:21:32,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 16:21:32,434 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-07 16:21:32,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:21:32,434 INFO L85 PathProgramCache]: Analyzing trace with hash -431674325, now seen corresponding path program 1 times [2021-11-07 16:21:32,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:21:32,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297203445] [2021-11-07 16:21:32,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:21:32,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:21:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:21:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 16:21:32,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:21:32,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297203445] [2021-11-07 16:21:32,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297203445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:21:32,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:21:32,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 16:21:32,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547055997] [2021-11-07 16:21:32,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:21:32,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:21:32,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:21:32,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:21:32,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:21:32,694 INFO L87 Difference]: Start difference. First operand 82116 states and 112319 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:34,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:21:34,363 INFO L93 Difference]: Finished difference Result 82116 states and 112319 transitions. [2021-11-07 16:21:34,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:21:34,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 16:21:34,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:21:34,559 INFO L225 Difference]: With dead ends: 82116 [2021-11-07 16:21:34,559 INFO L226 Difference]: Without dead ends: 82114 [2021-11-07 16:21:34,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:21:34,597 INFO L933 BasicCegarLoop]: 9317 mSDtfsCounter, 1026 mSDsluCounter, 7890 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 522.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 17207 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.73ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 596.83ms IncrementalHoareTripleChecker+Time [2021-11-07 16:21:34,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 17207 Invalid, 313 Unknown, 0 Unchecked, 14.73ms Time], IncrementalHoareTripleChecker [74 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 596.83ms Time] [2021-11-07 16:21:34,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82114 states. [2021-11-07 16:21:36,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82114 to 82114. [2021-11-07 16:21:36,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82114 states, 81327 states have (on average 1.3656227329177273) internal successors, (111062), 81881 states have internal predecessors, (111062), 624 states have call successors, (624), 80 states have call predecessors, (624), 80 states have return successors, (624), 592 states have call predecessors, (624), 624 states have call successors, (624) [2021-11-07 16:21:36,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82114 states to 82114 states and 112310 transitions. [2021-11-07 16:21:36,481 INFO L78 Accepts]: Start accepts. Automaton has 82114 states and 112310 transitions. Word has length 96 [2021-11-07 16:21:36,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:21:36,483 INFO L470 AbstractCegarLoop]: Abstraction has 82114 states and 112310 transitions. [2021-11-07 16:21:36,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:36,483 INFO L276 IsEmpty]: Start isEmpty. Operand 82114 states and 112310 transitions. [2021-11-07 16:21:36,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 16:21:36,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:21:36,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:21:36,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 16:21:36,499 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-07 16:21:36,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:21:36,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1231550224, now seen corresponding path program 1 times [2021-11-07 16:21:36,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:21:36,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583320794] [2021-11-07 16:21:36,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:21:36,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:21:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:21:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:21:36,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:21:36,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583320794] [2021-11-07 16:21:36,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583320794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:21:36,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:21:36,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:21:36,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883597692] [2021-11-07 16:21:36,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:21:36,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:21:36,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:21:36,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:21:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:21:36,755 INFO L87 Difference]: Start difference. First operand 82114 states and 112310 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:39,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:21:39,720 INFO L93 Difference]: Finished difference Result 206710 states and 282272 transitions. [2021-11-07 16:21:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:21:39,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 16:21:39,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:21:40,114 INFO L225 Difference]: With dead ends: 206710 [2021-11-07 16:21:40,115 INFO L226 Difference]: Without dead ends: 133108 [2021-11-07 16:21:40,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.53ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:21:40,265 INFO L933 BasicCegarLoop]: 13330 mSDtfsCounter, 16511 mSDsluCounter, 18638 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16534 SdHoareTripleChecker+Valid, 31968 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.44ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 149.36ms IncrementalHoareTripleChecker+Time [2021-11-07 16:21:40,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16534 Valid, 31968 Invalid, 135 Unknown, 0 Unchecked, 36.44ms Time], IncrementalHoareTripleChecker [38 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 149.36ms Time] [2021-11-07 16:21:40,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133108 states. [2021-11-07 16:21:42,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133108 to 98790. [2021-11-07 16:21:42,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98790 states, 97877 states have (on average 1.365938882474943) internal successors, (133694), 98509 states have internal predecessors, (133694), 730 states have call successors, (730), 100 states have call predecessors, (730), 100 states have return successors, (730), 690 states have call predecessors, (730), 730 states have call successors, (730) [2021-11-07 16:21:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98790 states to 98790 states and 135154 transitions. [2021-11-07 16:21:43,009 INFO L78 Accepts]: Start accepts. Automaton has 98790 states and 135154 transitions. Word has length 96 [2021-11-07 16:21:43,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:21:43,010 INFO L470 AbstractCegarLoop]: Abstraction has 98790 states and 135154 transitions. [2021-11-07 16:21:43,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:43,010 INFO L276 IsEmpty]: Start isEmpty. Operand 98790 states and 135154 transitions. [2021-11-07 16:21:43,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 16:21:43,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:21:43,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:21:43,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 16:21:43,022 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-07 16:21:43,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:21:43,023 INFO L85 PathProgramCache]: Analyzing trace with hash 649051843, now seen corresponding path program 1 times [2021-11-07 16:21:43,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:21:43,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095077185] [2021-11-07 16:21:43,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:21:43,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:21:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:21:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:21:43,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:21:43,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095077185] [2021-11-07 16:21:43,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095077185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:21:43,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:21:43,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:21:43,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345493012] [2021-11-07 16:21:43,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:21:43,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:21:43,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:21:43,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:21:43,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:21:43,246 INFO L87 Difference]: Start difference. First operand 98790 states and 135154 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:21:45,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:21:45,910 INFO L93 Difference]: Finished difference Result 184536 states and 252374 transitions. [2021-11-07 16:21:45,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 16:21:45,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-07 16:21:45,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:21:46,199 INFO L225 Difference]: With dead ends: 184536 [2021-11-07 16:21:46,199 INFO L226 Difference]: Without dead ends: 108413 [2021-11-07 16:21:46,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:21:46,312 INFO L933 BasicCegarLoop]: 12597 mSDtfsCounter, 12566 mSDsluCounter, 8620 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12566 SdHoareTripleChecker+Valid, 21217 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.97ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.45ms IncrementalHoareTripleChecker+Time [2021-11-07 16:21:46,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12566 Valid, 21217 Invalid, 92 Unknown, 0 Unchecked, 23.97ms Time], IncrementalHoareTripleChecker [26 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 96.45ms Time] [2021-11-07 16:21:46,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108413 states.