./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-32_7a-drivers--scsi--3w-9xxx.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-32_7a-drivers--scsi--3w-9xxx.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 c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 15:20:19,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 15:20:19,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 15:20:19,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 15:20:19,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 15:20:19,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 15:20:19,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 15:20:19,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 15:20:19,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 15:20:19,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 15:20:19,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 15:20:19,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 15:20:19,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 15:20:19,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 15:20:19,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 15:20:19,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 15:20:20,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 15:20:20,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 15:20:20,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 15:20:20,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 15:20:20,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 15:20:20,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 15:20:20,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 15:20:20,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 15:20:20,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 15:20:20,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 15:20:20,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 15:20:20,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 15:20:20,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 15:20:20,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 15:20:20,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 15:20:20,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 15:20:20,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 15:20:20,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 15:20:20,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 15:20:20,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 15:20:20,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 15:20:20,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 15:20:20,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 15:20:20,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 15:20:20,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 15:20:20,025 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 15:20:20,049 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 15:20:20,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 15:20:20,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 15:20:20,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 15:20:20,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 15:20:20,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 15:20:20,051 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 15:20:20,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 15:20:20,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 15:20:20,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 15:20:20,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 15:20:20,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 15:20:20,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 15:20:20,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 15:20:20,053 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 15:20:20,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 15:20:20,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 15:20:20,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 15:20:20,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 15:20:20,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:20:20,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 15:20:20,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 15:20:20,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 15:20:20,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 15:20:20,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 15:20:20,055 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 15:20:20,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 15:20:20,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 15:20:20,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 15:20:20,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 [2021-11-07 15:20:20,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 15:20:20,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 15:20:20,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 15:20:20,285 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 15:20:20,287 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 15:20:20,288 INFO L432 ainManager$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-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2021-11-07 15:20:20,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a03e38b5e/4541d3a8789f40ae9680e08831e5599c/FLAG1ad21be8e [2021-11-07 15:20:20,990 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 15:20:20,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2021-11-07 15:20:21,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a03e38b5e/4541d3a8789f40ae9680e08831e5599c/FLAG1ad21be8e [2021-11-07 15:20:21,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a03e38b5e/4541d3a8789f40ae9680e08831e5599c [2021-11-07 15:20:21,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 15:20:21,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 15:20:21,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 15:20:21,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 15:20:21,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 15:20:21,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:20:21" (1/1) ... [2021-11-07 15:20:21,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58689dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:21, skipping insertion in model container [2021-11-07 15:20:21,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:20:21" (1/1) ... [2021-11-07 15:20:21,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 15:20:21,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 15:20:22,697 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-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2021-11-07 15:20:22,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:20:22,868 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 15:20:23,109 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-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2021-11-07 15:20:23,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:20:23,200 INFO L208 MainTranslator]: Completed translation [2021-11-07 15:20:23,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:23 WrapperNode [2021-11-07 15:20:23,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 15:20:23,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 15:20:23,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 15:20:23,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 15:20:23,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:23" (1/1) ... [2021-11-07 15:20:23,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:23" (1/1) ... [2021-11-07 15:20:25,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 15:20:25,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 15:20:25,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 15:20:25,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 15:20:25,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:23" (1/1) ... [2021-11-07 15:20:25,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:23" (1/1) ... [2021-11-07 15:20:26,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:23" (1/1) ... [2021-11-07 15:20:26,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:23" (1/1) ... [2021-11-07 15:20:28,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:23" (1/1) ... [2021-11-07 15:20:28,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:23" (1/1) ... [2021-11-07 15:20:28,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:23" (1/1) ... [2021-11-07 15:20:29,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 15:20:29,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 15:20:29,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 15:20:29,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 15:20:29,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:23" (1/1) ... [2021-11-07 15:20:29,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:20:29,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:20:29,336 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 15:20:29,367 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 15:20:29,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 15:20:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 15:20:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 15:20:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 15:20:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 15:20:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 15:20:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 15:20:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 15:20:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 15:20:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 15:20:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 15:20:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 15:20:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 15:20:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 15:20:29,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 15:23:14,169 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 15:23:14,169 INFO L299 CfgBuilder]: Removed 12232 assume(true) statements. [2021-11-07 15:23:14,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:23:14 BoogieIcfgContainer [2021-11-07 15:23:14,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 15:23:14,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 15:23:14,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 15:23:14,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 15:23:14,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:20:21" (1/3) ... [2021-11-07 15:23:14,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589dd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:23:14, skipping insertion in model container [2021-11-07 15:23:14,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:23" (2/3) ... [2021-11-07 15:23:14,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589dd5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:23:14, skipping insertion in model container [2021-11-07 15:23:14,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:23:14" (3/3) ... [2021-11-07 15:23:14,194 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2021-11-07 15:23:14,198 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 15:23:14,199 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-07 15:23:14,289 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 15:23:14,295 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 15:23:14,297 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 15:23:14,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 20667 states, 20655 states have (on average 1.4811425804889857) internal successors, (30593), 20666 states have internal predecessors, (30593), 0 states have call successors, (0), 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 15:23:14,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 15:23:14,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:23:14,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:23:14,520 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 15:23:14,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:23:14,524 INFO L85 PathProgramCache]: Analyzing trace with hash -190751689, now seen corresponding path program 1 times [2021-11-07 15:23:14,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:23:14,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901098115] [2021-11-07 15:23:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:23:14,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:23:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:23:15,226 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 15:23:15,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:23:15,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901098115] [2021-11-07 15:23:15,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901098115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:23:15,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:23:15,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:23:15,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136303593] [2021-11-07 15:23:15,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:23:15,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 15:23:15,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:23:15,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 15:23:15,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:23:15,291 INFO L87 Difference]: Start difference. First operand has 20667 states, 20655 states have (on average 1.4811425804889857) internal successors, (30593), 20666 states have internal predecessors, (30593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:23:15,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:23:15,988 INFO L93 Difference]: Finished difference Result 41330 states and 61181 transitions. [2021-11-07 15:23:15,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 15:23:16,001 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 15:23:16,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:23:16,085 INFO L225 Difference]: With dead ends: 41330 [2021-11-07 15:23:16,085 INFO L226 Difference]: Without dead ends: 20647 [2021-11-07 15:23:16,121 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 15:23:16,124 INFO L933 BasicCegarLoop]: 30531 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, 30531 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 15:23:16,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30531 Invalid, 0 Unknown, 0 Unchecked, 58.65ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 15:23:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20647 states. [2021-11-07 15:23:16,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20647 to 20647. [2021-11-07 15:23:16,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20647 states, 20636 states have (on average 1.4777573173095562) internal successors, (30495), 20646 states have internal predecessors, (30495), 0 states have call successors, (0), 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 15:23:16,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20647 states to 20647 states and 30495 transitions. [2021-11-07 15:23:16,638 INFO L78 Accepts]: Start accepts. Automaton has 20647 states and 30495 transitions. Word has length 64 [2021-11-07 15:23:16,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:23:16,638 INFO L470 AbstractCegarLoop]: Abstraction has 20647 states and 30495 transitions. [2021-11-07 15:23:16,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:23:16,639 INFO L276 IsEmpty]: Start isEmpty. Operand 20647 states and 30495 transitions. [2021-11-07 15:23:16,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 15:23:16,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:23:16,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:23:16,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 15:23:16,641 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 15:23:16,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:23:16,642 INFO L85 PathProgramCache]: Analyzing trace with hash 718172739, now seen corresponding path program 1 times [2021-11-07 15:23:16,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:23:16,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283153624] [2021-11-07 15:23:16,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:23:16,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:23:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:23:17,222 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 15:23:17,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:23:17,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283153624] [2021-11-07 15:23:17,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283153624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:23:17,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:23:17,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:23:17,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441723833] [2021-11-07 15:23:17,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:23:17,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:23:17,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:23:17,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:23:17,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:23:17,229 INFO L87 Difference]: Start difference. First operand 20647 states and 30495 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:23:18,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:23:18,211 INFO L93 Difference]: Finished difference Result 57628 states and 85213 transitions. [2021-11-07 15:23:18,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:23:18,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 15:23:18,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:23:18,306 INFO L225 Difference]: With dead ends: 57628 [2021-11-07 15:23:18,306 INFO L226 Difference]: Without dead ends: 37033 [2021-11-07 15:23:18,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:23:18,340 INFO L933 BasicCegarLoop]: 32086 mSDtfsCounter, 29539 mSDsluCounter, 25171 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 214.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29539 SdHoareTripleChecker+Valid, 57257 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.71ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 252.02ms IncrementalHoareTripleChecker+Time [2021-11-07 15:23:18,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29539 Valid, 57257 Invalid, 60 Unknown, 0 Unchecked, 64.71ms Time], IncrementalHoareTripleChecker [39 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 252.02ms Time] [2021-11-07 15:23:18,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37033 states. [2021-11-07 15:23:19,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37033 to 35875. [2021-11-07 15:23:19,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35875 states, 35864 states have (on average 1.4803981708677225) internal successors, (53093), 35874 states have internal predecessors, (53093), 0 states have call successors, (0), 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 15:23:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35875 states to 35875 states and 53093 transitions. [2021-11-07 15:23:19,118 INFO L78 Accepts]: Start accepts. Automaton has 35875 states and 53093 transitions. Word has length 64 [2021-11-07 15:23:19,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:23:19,119 INFO L470 AbstractCegarLoop]: Abstraction has 35875 states and 53093 transitions. [2021-11-07 15:23:19,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:23:19,120 INFO L276 IsEmpty]: Start isEmpty. Operand 35875 states and 53093 transitions. [2021-11-07 15:23:19,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 15:23:19,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:23:19,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:23:19,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 15:23:19,129 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 15:23:19,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:23:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1705378750, now seen corresponding path program 1 times [2021-11-07 15:23:19,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:23:19,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392203923] [2021-11-07 15:23:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:23:19,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:23:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:23:19,491 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 15:23:19,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:23:19,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392203923] [2021-11-07 15:23:19,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392203923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:23:19,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:23:19,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:23:19,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156939207] [2021-11-07 15:23:19,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:23:19,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:23:19,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:23:19,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:23:19,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:23:19,494 INFO L87 Difference]: Start difference. First operand 35875 states and 53093 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:23:21,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:23:22,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:23:22,783 INFO L93 Difference]: Finished difference Result 107486 states and 159125 transitions. [2021-11-07 15:23:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:23:22,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 15:23:22,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:23:22,960 INFO L225 Difference]: With dead ends: 107486 [2021-11-07 15:23:22,961 INFO L226 Difference]: Without dead ends: 71663 [2021-11-07 15:23:23,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:23:23,026 INFO L933 BasicCegarLoop]: 30492 mSDtfsCounter, 30408 mSDsluCounter, 30475 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2282.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30408 SdHoareTripleChecker+Valid, 60967 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.24ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2358.30ms IncrementalHoareTripleChecker+Time [2021-11-07 15:23:23,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30408 Valid, 60967 Invalid, 15 Unknown, 0 Unchecked, 45.24ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2358.30ms Time] [2021-11-07 15:23:23,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71663 states. [2021-11-07 15:23:24,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71663 to 71651. [2021-11-07 15:23:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71651 states, 71640 states have (on average 1.4807230597431602) internal successors, (106079), 71650 states have internal predecessors, (106079), 0 states have call successors, (0), 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 15:23:24,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71651 states to 71651 states and 106079 transitions. [2021-11-07 15:23:24,563 INFO L78 Accepts]: Start accepts. Automaton has 71651 states and 106079 transitions. Word has length 64 [2021-11-07 15:23:24,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:23:24,565 INFO L470 AbstractCegarLoop]: Abstraction has 71651 states and 106079 transitions. [2021-11-07 15:23:24,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:23:24,565 INFO L276 IsEmpty]: Start isEmpty. Operand 71651 states and 106079 transitions. [2021-11-07 15:23:24,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 15:23:24,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:23:24,567 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] [2021-11-07 15:23:24,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 15:23:24,568 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 15:23:24,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:23:24,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1882764130, now seen corresponding path program 1 times [2021-11-07 15:23:24,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:23:24,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759820013] [2021-11-07 15:23:24,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:23:24,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:23:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:23:24,933 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 15:23:24,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:23:24,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759820013] [2021-11-07 15:23:24,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759820013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:23:24,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:23:24,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:23:24,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062672165] [2021-11-07 15:23:24,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:23:24,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:23:24,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:23:24,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:23:24,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:23:24,936 INFO L87 Difference]: Start difference. First operand 71651 states and 106079 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 15:23:27,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:23:27,089 INFO L93 Difference]: Finished difference Result 211799 states and 313615 transitions. [2021-11-07 15:23:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:23:27,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-07 15:23:27,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:23:27,421 INFO L225 Difference]: With dead ends: 211799 [2021-11-07 15:23:27,422 INFO L226 Difference]: Without dead ends: 140200 [2021-11-07 15:23:27,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:23:27,512 INFO L933 BasicCegarLoop]: 32407 mSDtfsCounter, 30138 mSDsluCounter, 30389 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 172.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30138 SdHoareTripleChecker+Valid, 62796 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.25ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 218.90ms IncrementalHoareTripleChecker+Time [2021-11-07 15:23:27,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30138 Valid, 62796 Invalid, 49 Unknown, 0 Unchecked, 42.25ms Time], IncrementalHoareTripleChecker [33 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 218.90ms Time] [2021-11-07 15:23:27,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140200 states. [2021-11-07 15:23:29,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140200 to 137565. [2021-11-07 15:23:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137565 states, 137554 states have (on average 1.4809529348474053) internal successors, (203711), 137564 states have internal predecessors, (203711), 0 states have call successors, (0), 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 15:23:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137565 states to 137565 states and 203711 transitions. [2021-11-07 15:23:30,355 INFO L78 Accepts]: Start accepts. Automaton has 137565 states and 203711 transitions. Word has length 69 [2021-11-07 15:23:30,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:23:30,355 INFO L470 AbstractCegarLoop]: Abstraction has 137565 states and 203711 transitions. [2021-11-07 15:23:30,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 15:23:30,356 INFO L276 IsEmpty]: Start isEmpty. Operand 137565 states and 203711 transitions. [2021-11-07 15:23:30,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 15:23:30,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:23:30,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:23:30,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 15:23:30,357 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 15:23:30,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:23:30,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1473040866, now seen corresponding path program 1 times [2021-11-07 15:23:30,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:23:30,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835036660] [2021-11-07 15:23:30,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:23:30,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:23:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:23:30,724 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 15:23:30,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:23:30,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835036660] [2021-11-07 15:23:30,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835036660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:23:30,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:23:30,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:23:30,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936661095] [2021-11-07 15:23:30,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:23:30,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:23:30,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:23:30,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:23:30,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:23:30,726 INFO L87 Difference]: Start difference. First operand 137565 states and 203711 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:23:32,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:23:32,349 INFO L93 Difference]: Finished difference Result 137565 states and 203711 transitions. [2021-11-07 15:23:32,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:23:32,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 15:23:32,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:23:32,595 INFO L225 Difference]: With dead ends: 137565 [2021-11-07 15:23:32,595 INFO L226 Difference]: Without dead ends: 137563 [2021-11-07 15:23:32,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:23:32,632 INFO L933 BasicCegarLoop]: 30492 mSDtfsCounter, 30422 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30422 SdHoareTripleChecker+Valid, 30492 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.60ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.03ms IncrementalHoareTripleChecker+Time [2021-11-07 15:23:32,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30422 Valid, 30492 Invalid, 1 Unknown, 0 Unchecked, 28.60ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 3.03ms Time] [2021-11-07 15:23:32,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137563 states.