./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--tty--synclink_gt.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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--tty--synclink_gt.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 a4081061f41c6e64548335d73988449c6ad951b3e3b096581982a43a396014f3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:54:17,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:54:17,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:54:17,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:54:17,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:54:17,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:54:17,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:54:17,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:54:17,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:54:17,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:54:17,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:54:17,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:54:17,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:54:17,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:54:17,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:54:17,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:54:17,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:54:17,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:54:17,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:54:17,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:54:17,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:54:17,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:54:17,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:54:17,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:54:17,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:54:17,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:54:17,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:54:17,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:54:17,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:54:17,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:54:17,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:54:17,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:54:17,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:54:17,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:54:17,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:54:17,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:54:17,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:54:17,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:54:17,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:54:17,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:54:17,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:54:17,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:54:17,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:54:17,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:54:17,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:54:17,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:54:17,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:54:17,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:54:17,246 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:54:17,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:54:17,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:54:17,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:54:17,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:54:17,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:54:17,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:54:17,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:54:17,253 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:54:17,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:54:17,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:54:17,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:54:17,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:54:17,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:54:17,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:54:17,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:54:17,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:54:17,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:54:17,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:54:17,254 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:54:17,254 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:54:17,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:54:17,256 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:54:17,256 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4081061f41c6e64548335d73988449c6ad951b3e3b096581982a43a396014f3 [2021-11-06 17:54:17,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:54:17,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:54:17,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:54:17,494 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:54:17,495 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:54:17,495 INFO L432 ainManager$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--tty--synclink_gt.ko-entry_point.cil.out.i [2021-11-06 17:54:17,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4fba8289/20e9bef651994c8eaade837149775fcf/FLAGcd12b4aa8 [2021-11-06 17:54:18,221 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:54:18,222 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--tty--synclink_gt.ko-entry_point.cil.out.i [2021-11-06 17:54:18,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4fba8289/20e9bef651994c8eaade837149775fcf/FLAGcd12b4aa8 [2021-11-06 17:54:18,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4fba8289/20e9bef651994c8eaade837149775fcf [2021-11-06 17:54:18,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:54:18,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:54:18,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:54:18,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:54:18,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:54:18,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:54:18" (1/1) ... [2021-11-06 17:54:18,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d11b6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:18, skipping insertion in model container [2021-11-06 17:54:18,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:54:18" (1/1) ... [2021-11-06 17:54:18,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:54:18,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:54:21,185 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--tty--synclink_gt.ko-entry_point.cil.out.i[412025,412038] [2021-11-06 17:54:21,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:54:21,266 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:54:21,752 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--tty--synclink_gt.ko-entry_point.cil.out.i[412025,412038] [2021-11-06 17:54:21,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:54:21,871 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:54:21,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:21 WrapperNode [2021-11-06 17:54:21,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:54:21,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:54:21,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:54:21,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:54:21,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:21" (1/1) ... [2021-11-06 17:54:21,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:21" (1/1) ... [2021-11-06 17:54:26,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:54:26,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:54:26,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:54:26,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:54:26,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:21" (1/1) ... [2021-11-06 17:54:26,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:21" (1/1) ... [2021-11-06 17:54:27,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:21" (1/1) ... [2021-11-06 17:54:27,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:21" (1/1) ... [2021-11-06 17:54:29,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:21" (1/1) ... [2021-11-06 17:54:30,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:21" (1/1) ... [2021-11-06 17:54:30,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:21" (1/1) ... [2021-11-06 17:54:31,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:54:31,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:54:31,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:54:31,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:54:31,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:21" (1/1) ... [2021-11-06 17:54:31,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:54:31,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:54:31,712 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) [2021-11-06 17:54:31,716 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 [2021-11-06 17:54:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 17:54:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 17:54:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:54:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:54:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:54:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:54:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:54:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:54:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 17:54:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:54:31,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:54:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:54:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:54:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:54:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:54:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:54:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:54:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:03:20,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:03:20,237 INFO L299 CfgBuilder]: Removed 36799 assume(true) statements. [2021-11-06 18:03:20,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:03:20 BoogieIcfgContainer [2021-11-06 18:03:20,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:03:20,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:03:20,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:03:20,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:03:20,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:54:18" (1/3) ... [2021-11-06 18:03:20,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a92d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:03:20, skipping insertion in model container [2021-11-06 18:03:20,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:21" (2/3) ... [2021-11-06 18:03:20,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a92d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:03:20, skipping insertion in model container [2021-11-06 18:03:20,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:03:20" (3/3) ... [2021-11-06 18:03:20,280 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--tty--synclink_gt.ko-entry_point.cil.out.i [2021-11-06 18:03:20,283 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:03:20,283 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-06 18:03:20,408 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:03:20,411 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 [2021-11-06 18:03:20,412 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-06 18:03:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 50621 states, 50603 states have (on average 1.5063731399324152) internal successors, (76227), 50620 states have internal predecessors, (76227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:21,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 18:03:21,137 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:03:21,137 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:03:21,138 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 18:03:21,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:03:21,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2133878674, now seen corresponding path program 1 times [2021-11-06 18:03:21,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:03:21,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438139376] [2021-11-06 18:03:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:03:21,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:03:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:03:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:03:21,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:03:21,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438139376] [2021-11-06 18:03:21,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438139376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:03:21,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:03:21,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:03:21,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506239604] [2021-11-06 18:03:21,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 18:03:21,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:03:21,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 18:03:21,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 18:03:21,814 INFO L87 Difference]: Start difference. First operand has 50621 states, 50603 states have (on average 1.5063731399324152) internal successors, (76227), 50620 states have internal predecessors, (76227), 0 states have call successors, (0), 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 57.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:22,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:03:22,713 INFO L93 Difference]: Finished difference Result 101238 states and 152449 transitions. [2021-11-06 18:03:22,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 18:03:22,715 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-11-06 18:03:22,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:03:22,904 INFO L225 Difference]: With dead ends: 101238 [2021-11-06 18:03:22,904 INFO L226 Difference]: Without dead ends: 50425 [2021-11-06 18:03:23,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 18:03:23,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50425 states. [2021-11-06 18:03:24,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50425 to 50425. [2021-11-06 18:03:24,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50425 states, 50408 states have (on average 1.504166005395969) internal successors, (75822), 50424 states have internal predecessors, (75822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50425 states to 50425 states and 75822 transitions. [2021-11-06 18:03:24,632 INFO L78 Accepts]: Start accepts. Automaton has 50425 states and 75822 transitions. Word has length 114 [2021-11-06 18:03:24,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:03:24,632 INFO L470 AbstractCegarLoop]: Abstraction has 50425 states and 75822 transitions. [2021-11-06 18:03:24,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 57.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:24,633 INFO L276 IsEmpty]: Start isEmpty. Operand 50425 states and 75822 transitions. [2021-11-06 18:03:24,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 18:03:24,636 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:03:24,637 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:03:24,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:03:24,637 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 18:03:24,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:03:24,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1193581694, now seen corresponding path program 1 times [2021-11-06 18:03:24,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:03:24,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118033571] [2021-11-06 18:03:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:03:24,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:03:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:03:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:03:24,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:03:24,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118033571] [2021-11-06 18:03:24,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118033571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:03:24,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:03:24,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:03:24,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121608744] [2021-11-06 18:03:24,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:03:24,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:03:24,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:03:24,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:03:24,947 INFO L87 Difference]: Start difference. First operand 50425 states and 75822 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:27,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:03:27,438 INFO L93 Difference]: Finished difference Result 149605 states and 225115 transitions. [2021-11-06 18:03:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:03:27,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-11-06 18:03:27,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:03:27,713 INFO L225 Difference]: With dead ends: 149605 [2021-11-06 18:03:27,713 INFO L226 Difference]: Without dead ends: 99277 [2021-11-06 18:03:27,799 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:03:27,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99277 states. [2021-11-06 18:03:29,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99277 to 99255. [2021-11-06 18:03:29,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99255 states, 99238 states have (on average 1.5054112336000323) internal successors, (149394), 99254 states have internal predecessors, (149394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:29,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99255 states to 99255 states and 149394 transitions. [2021-11-06 18:03:29,830 INFO L78 Accepts]: Start accepts. Automaton has 99255 states and 149394 transitions. Word has length 114 [2021-11-06 18:03:29,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:03:29,831 INFO L470 AbstractCegarLoop]: Abstraction has 99255 states and 149394 transitions. [2021-11-06 18:03:29,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:29,831 INFO L276 IsEmpty]: Start isEmpty. Operand 99255 states and 149394 transitions. [2021-11-06 18:03:29,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-06 18:03:29,837 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:03:29,838 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:03:29,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:03:29,838 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 18:03:29,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:03:29,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1654350429, now seen corresponding path program 1 times [2021-11-06 18:03:29,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:03:29,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145792196] [2021-11-06 18:03:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:03:29,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:03:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:03:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:03:30,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:03:30,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145792196] [2021-11-06 18:03:30,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145792196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:03:30,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:03:30,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:03:30,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059491952] [2021-11-06 18:03:30,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:03:30,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:03:30,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:03:30,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:03:30,457 INFO L87 Difference]: Start difference. First operand 99255 states and 149394 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:03:33,063 INFO L93 Difference]: Finished difference Result 288680 states and 434621 transitions. [2021-11-06 18:03:33,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:03:33,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-06 18:03:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:03:33,586 INFO L225 Difference]: With dead ends: 288680 [2021-11-06 18:03:33,587 INFO L226 Difference]: Without dead ends: 189522 [2021-11-06 18:03:33,786 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:03:34,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189522 states. [2021-11-06 18:03:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189522 to 189481. [2021-11-06 18:03:36,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189481 states, 189464 states have (on average 1.5059008571549213) internal successors, (285314), 189480 states have internal predecessors, (285314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:37,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189481 states to 189481 states and 285314 transitions. [2021-11-06 18:03:37,426 INFO L78 Accepts]: Start accepts. Automaton has 189481 states and 285314 transitions. Word has length 127 [2021-11-06 18:03:37,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:03:37,426 INFO L470 AbstractCegarLoop]: Abstraction has 189481 states and 285314 transitions. [2021-11-06 18:03:37,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:37,427 INFO L276 IsEmpty]: Start isEmpty. Operand 189481 states and 285314 transitions. [2021-11-06 18:03:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-06 18:03:37,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:03:37,440 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:03:37,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:03:37,441 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 18:03:37,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:03:37,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1448201028, now seen corresponding path program 1 times [2021-11-06 18:03:37,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:03:37,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999163886] [2021-11-06 18:03:37,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:03:37,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:03:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:03:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:03:37,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:03:37,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999163886] [2021-11-06 18:03:37,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999163886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:03:37,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:03:37,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:03:37,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745640032] [2021-11-06 18:03:37,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:03:37,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:03:37,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:03:37,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:03:37,654 INFO L87 Difference]: Start difference. First operand 189481 states and 285314 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:42,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:03:42,186 INFO L93 Difference]: Finished difference Result 424419 states and 638553 transitions. [2021-11-06 18:03:42,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:03:42,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-06 18:03:42,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:03:42,738 INFO L225 Difference]: With dead ends: 424419 [2021-11-06 18:03:42,739 INFO L226 Difference]: Without dead ends: 235035 [2021-11-06 18:03:42,943 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:03:43,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235035 states. [2021-11-06 18:03:46,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235035 to 235003. [2021-11-06 18:03:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235003 states, 234986 states have (on average 1.503634259062242) internal successors, (353333), 235002 states have internal predecessors, (353333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:47,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235003 states to 235003 states and 353333 transitions. [2021-11-06 18:03:47,499 INFO L78 Accepts]: Start accepts. Automaton has 235003 states and 353333 transitions. Word has length 142 [2021-11-06 18:03:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:03:47,500 INFO L470 AbstractCegarLoop]: Abstraction has 235003 states and 353333 transitions. [2021-11-06 18:03:47,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:47,500 INFO L276 IsEmpty]: Start isEmpty. Operand 235003 states and 353333 transitions. [2021-11-06 18:03:47,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 18:03:47,507 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:03:47,507 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:03:47,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:03:47,508 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-06 18:03:47,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:03:47,508 INFO L85 PathProgramCache]: Analyzing trace with hash 894914104, now seen corresponding path program 1 times [2021-11-06 18:03:47,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:03:47,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27536053] [2021-11-06 18:03:47,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:03:47,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms