./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--block--rsxx--rsxx.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-32_7a-drivers--block--rsxx--rsxx.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 66bf0b457d4d5112c0b99aeef3b038fb34481370a385df3d77d1a982d2cba2ad --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 16:21:07,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 16:21:07,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 16:21:07,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 16:21:07,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 16:21:07,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 16:21:07,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 16:21:07,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 16:21:07,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 16:21:07,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 16:21:07,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 16:21:07,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 16:21:07,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 16:21:07,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 16:21:07,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 16:21:07,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 16:21:07,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 16:21:07,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 16:21:07,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 16:21:07,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 16:21:07,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 16:21:07,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 16:21:07,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 16:21:07,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 16:21:07,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 16:21:07,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 16:21:07,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 16:21:07,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 16:21:07,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 16:21:07,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 16:21:07,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 16:21:07,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 16:21:07,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 16:21:07,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 16:21:07,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 16:21:07,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 16:21:07,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 16:21:07,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 16:21:07,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 16:21:07,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 16:21:07,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 16:21:07,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 16:21:07,811 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 16:21:07,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 16:21:07,812 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 16:21:07,812 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 16:21:07,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 16:21:07,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 16:21:07,814 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 16:21:07,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 16:21:07,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 16:21:07,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 16:21:07,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 16:21:07,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 16:21:07,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 16:21:07,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 16:21:07,816 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 16:21:07,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 16:21:07,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 16:21:07,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 16:21:07,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 16:21:07,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:21:07,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 16:21:07,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 16:21:07,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 16:21:07,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 16:21:07,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 16:21:07,817 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 16:21:07,817 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 16:21:07,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 16:21:07,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 16:21:07,819 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66bf0b457d4d5112c0b99aeef3b038fb34481370a385df3d77d1a982d2cba2ad [2021-11-06 16:21:08,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 16:21:08,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 16:21:08,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 16:21:08,057 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 16:21:08,058 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 16:21:08,059 INFO L432 ainManager$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--block--rsxx--rsxx.ko-entry_point.cil.out.i [2021-11-06 16:21:08,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b78e2e0d9/1cab6b911b21433b93a0057cb4464153/FLAGb01367565 [2021-11-06 16:21:08,657 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 16:21:08,657 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--block--rsxx--rsxx.ko-entry_point.cil.out.i [2021-11-06 16:21:08,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b78e2e0d9/1cab6b911b21433b93a0057cb4464153/FLAGb01367565 [2021-11-06 16:21:08,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b78e2e0d9/1cab6b911b21433b93a0057cb4464153 [2021-11-06 16:21:08,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 16:21:08,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 16:21:08,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 16:21:08,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 16:21:08,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 16:21:08,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:21:08" (1/1) ... [2021-11-06 16:21:08,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ca907a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:21:08, skipping insertion in model container [2021-11-06 16:21:08,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:21:08" (1/1) ... [2021-11-06 16:21:08,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 16:21:09,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 16:21:10,945 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--block--rsxx--rsxx.ko-entry_point.cil.out.i[348806,348819] [2021-11-06 16:21:11,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:21:11,143 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 16:21:11,479 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--block--rsxx--rsxx.ko-entry_point.cil.out.i[348806,348819] [2021-11-06 16:21:11,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:21:11,634 INFO L208 MainTranslator]: Completed translation [2021-11-06 16:21:11,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:21:11 WrapperNode [2021-11-06 16:21:11,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 16:21:11,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 16:21:11,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 16:21:11,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 16:21:11,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:21:11" (1/1) ... [2021-11-06 16:21:11,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:21:11" (1/1) ... [2021-11-06 16:21:21,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 16:21:21,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 16:21:21,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 16:21:21,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 16:21:21,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:21:11" (1/1) ... [2021-11-06 16:21:21,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:21:11" (1/1) ... [2021-11-06 16:21:23,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:21:11" (1/1) ... [2021-11-06 16:21:23,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:21:11" (1/1) ... [2021-11-06 16:21:26,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:21:11" (1/1) ... [2021-11-06 16:21:27,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:21:11" (1/1) ... [2021-11-06 16:21:27,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:21:11" (1/1) ... [2021-11-06 16:21:29,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 16:21:29,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 16:21:29,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 16:21:29,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 16:21:29,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:21:11" (1/1) ... [2021-11-06 16:21:29,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:21:29,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:21:29,167 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 16:21:29,169 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 16:21:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 16:21:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 16:21:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 16:21:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 16:21:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 16:21:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 16:21:29,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 16:21:29,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 16:21:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 16:21:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 16:21:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 16:21:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 16:21:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 16:21:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 16:21:29,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 16:31:56,012 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 16:31:56,013 INFO L299 CfgBuilder]: Removed 64288 assume(true) statements. [2021-11-06 16:31:56,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:31:56 BoogieIcfgContainer [2021-11-06 16:31:56,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 16:31:56,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 16:31:56,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 16:31:56,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 16:31:56,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 04:21:08" (1/3) ... [2021-11-06 16:31:56,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f25c8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:31:56, skipping insertion in model container [2021-11-06 16:31:56,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:21:11" (2/3) ... [2021-11-06 16:31:56,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f25c8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:31:56, skipping insertion in model container [2021-11-06 16:31:56,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:31:56" (3/3) ... [2021-11-06 16:31:56,073 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--block--rsxx--rsxx.ko-entry_point.cil.out.i [2021-11-06 16:31:56,080 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 16:31:56,080 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 114 error locations. [2021-11-06 16:31:56,234 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 16:31:56,238 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 16:31:56,238 INFO L340 AbstractCegarLoop]: Starting to check reachability of 114 error locations. [2021-11-06 16:31:56,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 67876 states, 67761 states have (on average 1.4776198698366316) internal successors, (100125), 67875 states have internal predecessors, (100125), 0 states have call successors, (0), 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 16:31:57,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 16:31:57,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:31:57,001 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] [2021-11-06 16:31:57,002 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 111 more)] === [2021-11-06 16:31:57,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:31:57,024 INFO L85 PathProgramCache]: Analyzing trace with hash -88239022, now seen corresponding path program 1 times [2021-11-06 16:31:57,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:31:57,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779630381] [2021-11-06 16:31:57,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:31:57,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:31:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:31:57,716 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 16:31:57,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:31:57,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779630381] [2021-11-06 16:31:57,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779630381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:31:57,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:31:57,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:31:57,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251947075] [2021-11-06 16:31:57,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 16:31:57,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:31:57,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 16:31:57,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:31:57,841 INFO L87 Difference]: Start difference. First operand has 67876 states, 67761 states have (on average 1.4776198698366316) internal successors, (100125), 67875 states have internal predecessors, (100125), 0 states have call successors, (0), 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 45.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 16:31:58,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:31:58,936 INFO L93 Difference]: Finished difference Result 135748 states and 200245 transitions. [2021-11-06 16:31:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 16:31:58,938 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-06 16:31:58,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:31:59,141 INFO L225 Difference]: With dead ends: 135748 [2021-11-06 16:31:59,142 INFO L226 Difference]: Without dead ends: 67495 [2021-11-06 16:31:59,261 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 16:31:59,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67495 states. [2021-11-06 16:32:00,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67495 to 67495. [2021-11-06 16:32:01,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67495 states, 67381 states have (on average 1.4666745818554192) internal successors, (98826), 67494 states have internal predecessors, (98826), 0 states have call successors, (0), 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 16:32:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67495 states to 67495 states and 98826 transitions. [2021-11-06 16:32:01,350 INFO L78 Accepts]: Start accepts. Automaton has 67495 states and 98826 transitions. Word has length 90 [2021-11-06 16:32:01,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:32:01,351 INFO L470 AbstractCegarLoop]: Abstraction has 67495 states and 98826 transitions. [2021-11-06 16:32:01,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 16:32:01,351 INFO L276 IsEmpty]: Start isEmpty. Operand 67495 states and 98826 transitions. [2021-11-06 16:32:01,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 16:32:01,356 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:32:01,356 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] [2021-11-06 16:32:01,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 16:32:01,357 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 111 more)] === [2021-11-06 16:32:01,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:32:01,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1800637664, now seen corresponding path program 1 times [2021-11-06 16:32:01,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:32:01,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143139107] [2021-11-06 16:32:01,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:32:01,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:32:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:32:01,715 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 16:32:01,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:32:01,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143139107] [2021-11-06 16:32:01,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143139107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:32:01,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:32:01,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:32:01,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971840632] [2021-11-06 16:32:01,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:32:01,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:32:01,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:32:01,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:32:01,717 INFO L87 Difference]: Start difference. First operand 67495 states and 98826 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 16:32:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:32:03,854 INFO L93 Difference]: Finished difference Result 142131 states and 207885 transitions. [2021-11-06 16:32:03,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:32:03,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-06 16:32:03,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:32:03,997 INFO L225 Difference]: With dead ends: 142131 [2021-11-06 16:32:03,998 INFO L226 Difference]: Without dead ends: 74711 [2021-11-06 16:32:04,099 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 16:32:04,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74711 states. [2021-11-06 16:32:05,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74711 to 74639. [2021-11-06 16:32:05,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74639 states, 74525 states have (on average 1.463911439114391) internal successors, (109098), 74638 states have internal predecessors, (109098), 0 states have call successors, (0), 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 16:32:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74639 states to 74639 states and 109098 transitions. [2021-11-06 16:32:05,672 INFO L78 Accepts]: Start accepts. Automaton has 74639 states and 109098 transitions. Word has length 90 [2021-11-06 16:32:05,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:32:05,675 INFO L470 AbstractCegarLoop]: Abstraction has 74639 states and 109098 transitions. [2021-11-06 16:32:05,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 16:32:05,676 INFO L276 IsEmpty]: Start isEmpty. Operand 74639 states and 109098 transitions. [2021-11-06 16:32:05,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 16:32:05,678 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:32:05,678 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] [2021-11-06 16:32:05,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 16:32:05,679 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr108ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 111 more)] === [2021-11-06 16:32:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:32:05,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1284873205, now seen corresponding path program 1 times [2021-11-06 16:32:05,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:32:05,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596160560] [2021-11-06 16:32:05,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:32:05,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:32:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:32:05,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:32:05,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:32:05,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596160560] [2021-11-06 16:32:05,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596160560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:32:05,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:32:05,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:32:05,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397694604] [2021-11-06 16:32:05,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:32:05,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:32:05,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:32:05,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:32:05,998 INFO L87 Difference]: Start difference. First operand 74639 states and 109098 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:32:10,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:32:10,496 INFO L93 Difference]: Finished difference Result 223605 states and 326939 transitions. [2021-11-06 16:32:10,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:32:10,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 16:32:10,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:32:11,010 INFO L225 Difference]: With dead ends: 223605 [2021-11-06 16:32:11,010 INFO L226 Difference]: Without dead ends: 149041 [2021-11-06 16:32:11,092 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 16:32:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149041 states. [2021-11-06 16:32:13,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149041 to 148825. [2021-11-06 16:32:13,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148825 states, 148711 states have (on average 1.464666366307805) internal successors, (217812), 148824 states have internal predecessors, (217812), 0 states have call successors, (0), 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 16:32:14,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148825 states to 148825 states and 217812 transitions. [2021-11-06 16:32:14,204 INFO L78 Accepts]: Start accepts. Automaton has 148825 states and 217812 transitions. Word has length 97 [2021-11-06 16:32:14,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:32:14,204 INFO L470 AbstractCegarLoop]: Abstraction has 148825 states and 217812 transitions. [2021-11-06 16:32:14,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:32:14,205 INFO L276 IsEmpty]: Start isEmpty. Operand 148825 states and 217812 transitions. [2021-11-06 16:32:14,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 16:32:14,206 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:32:14,206 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] [2021-11-06 16:32:14,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 16:32:14,206 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr108ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 111 more)] === [2021-11-06 16:32:14,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:32:14,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1230253966, now seen corresponding path program 1 times [2021-11-06 16:32:14,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:32:14,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532020049] [2021-11-06 16:32:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:32:14,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:32:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:32:14,474 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 16:32:14,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:32:14,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532020049] [2021-11-06 16:32:14,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532020049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:32:14,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:32:14,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:32:14,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290329960] [2021-11-06 16:32:14,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:32:14,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:32:14,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:32:14,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:32:14,475 INFO L87 Difference]: Start difference. First operand 148825 states and 217812 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 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 16:32:16,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:32:16,481 INFO L93 Difference]: Finished difference Result 148825 states and 217812 transitions. [2021-11-06 16:32:16,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:32:16,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-06 16:32:16,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:32:16,761 INFO L225 Difference]: With dead ends: 148825 [2021-11-06 16:32:16,761 INFO L226 Difference]: Without dead ends: 148805 [2021-11-06 16:32:16,820 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6