./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--st.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--st.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 5257f81555b3bfe28b84a069de5704350960a2d031d6c4979181f2692dbf025e --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 07:17:24,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 07:17:24,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 07:17:24,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 07:17:24,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 07:17:24,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 07:17:24,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 07:17:24,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 07:17:24,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 07:17:24,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 07:17:24,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 07:17:24,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 07:17:24,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 07:17:24,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 07:17:24,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 07:17:24,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 07:17:24,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 07:17:24,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 07:17:24,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 07:17:24,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 07:17:24,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 07:17:24,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 07:17:24,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 07:17:24,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 07:17:24,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 07:17:24,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 07:17:24,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 07:17:24,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 07:17:24,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 07:17:24,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 07:17:24,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 07:17:24,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 07:17:24,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 07:17:24,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 07:17:24,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 07:17:24,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 07:17:24,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 07:17:24,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 07:17:24,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 07:17:24,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 07:17:24,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 07:17:24,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 07:17:24,891 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 07:17:24,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 07:17:24,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 07:17:24,892 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 07:17:24,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 07:17:24,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 07:17:24,893 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 07:17:24,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 07:17:24,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 07:17:24,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 07:17:24,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 07:17:24,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 07:17:24,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 07:17:24,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 07:17:24,895 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 07:17:24,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 07:17:24,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 07:17:24,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 07:17:24,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 07:17:24,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:17:24,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 07:17:24,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 07:17:24,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 07:17:24,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 07:17:24,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 07:17:24,896 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 07:17:24,896 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 07:17:24,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 07:17:24,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 07:17:24,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5257f81555b3bfe28b84a069de5704350960a2d031d6c4979181f2692dbf025e [2021-11-04 07:17:25,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 07:17:25,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 07:17:25,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 07:17:25,135 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 07:17:25,136 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 07:17:25,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--st.ko-entry_point.cil.out.i [2021-11-04 07:17:25,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1da220dcb/d4897f3f2c5949d990ecb0c5954c0fdb/FLAGfdae23fe4 [2021-11-04 07:17:25,819 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 07:17:25,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--st.ko-entry_point.cil.out.i [2021-11-04 07:17:25,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1da220dcb/d4897f3f2c5949d990ecb0c5954c0fdb/FLAGfdae23fe4 [2021-11-04 07:17:26,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1da220dcb/d4897f3f2c5949d990ecb0c5954c0fdb [2021-11-04 07:17:26,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 07:17:26,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 07:17:26,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 07:17:26,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 07:17:26,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 07:17:26,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:17:26" (1/1) ... [2021-11-04 07:17:26,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c478a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:17:26, skipping insertion in model container [2021-11-04 07:17:26,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:17:26" (1/1) ... [2021-11-04 07:17:26,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 07:17:26,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 07:17:28,051 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--st.ko-entry_point.cil.out.i[348142,348155] [2021-11-04 07:17:28,250 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-04 07:17:28,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:17:28,291 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 07:17:28,657 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--st.ko-entry_point.cil.out.i[348142,348155] [2021-11-04 07:17:28,665 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-04 07:17:28,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:17:28,764 INFO L208 MainTranslator]: Completed translation [2021-11-04 07:17:28,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:17:28 WrapperNode [2021-11-04 07:17:28,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 07:17:28,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 07:17:28,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 07:17:28,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 07:17:28,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:17:28" (1/1) ... [2021-11-04 07:17:28,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:17:28" (1/1) ... [2021-11-04 07:17:31,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 07:17:31,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 07:17:31,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 07:17:31,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 07:17:31,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:17:28" (1/1) ... [2021-11-04 07:17:31,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:17:28" (1/1) ... [2021-11-04 07:17:31,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:17:28" (1/1) ... [2021-11-04 07:17:31,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:17:28" (1/1) ... [2021-11-04 07:17:33,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:17:28" (1/1) ... [2021-11-04 07:17:33,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:17:28" (1/1) ... [2021-11-04 07:17:33,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:17:28" (1/1) ... [2021-11-04 07:17:34,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 07:17:34,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 07:17:34,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 07:17:34,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 07:17:34,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:17:28" (1/1) ... [2021-11-04 07:17:34,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:17:34,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 07:17:34,374 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) [2021-11-04 07:17:34,379 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 [2021-11-04 07:17:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-04 07:17:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 07:17:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 07:17:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2021-11-04 07:17:34,426 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2021-11-04 07:17:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 07:17:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 07:17:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-04 07:17:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-04 07:17:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 07:17:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 07:17:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 07:17:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 07:17:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 07:17:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2021-11-04 07:17:34,428 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2021-11-04 07:17:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 07:17:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 07:17:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 07:17:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 07:17:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 07:17:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 07:17:34,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 07:18:02,829 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 07:18:02,830 INFO L299 CfgBuilder]: Removed 13696 assume(true) statements. [2021-11-04 07:18:02,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:18:02 BoogieIcfgContainer [2021-11-04 07:18:02,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 07:18:02,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 07:18:02,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 07:18:02,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 07:18:02,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 07:17:26" (1/3) ... [2021-11-04 07:18:02,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a26344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:18:02, skipping insertion in model container [2021-11-04 07:18:02,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:17:28" (2/3) ... [2021-11-04 07:18:02,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20a26344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:18:02, skipping insertion in model container [2021-11-04 07:18:02,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:18:02" (3/3) ... [2021-11-04 07:18:02,850 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--st.ko-entry_point.cil.out.i [2021-11-04 07:18:02,854 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 07:18:02,854 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2021-11-04 07:18:02,928 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 07:18:02,933 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 [2021-11-04 07:18:02,933 INFO L340 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2021-11-04 07:18:03,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 17881 states, 17820 states have (on average 1.45662177328844) internal successors, (25957), 17844 states have internal predecessors, (25957), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-04 07:18:03,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-04 07:18:03,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:18:03,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:18:03,137 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 07:18:03,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:18:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1493201757, now seen corresponding path program 1 times [2021-11-04 07:18:03,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:18:03,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891608076] [2021-11-04 07:18:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:18:03,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:18:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:18:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:18:03,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:18:03,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891608076] [2021-11-04 07:18:03,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891608076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:18:03,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:18:03,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:18:03,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588544751] [2021-11-04 07:18:03,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:18:03,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 07:18:03,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:18:03,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 07:18:03,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:18:03,978 INFO L87 Difference]: Start difference. First operand has 17881 states, 17820 states have (on average 1.45662177328844) internal successors, (25957), 17844 states have internal predecessors, (25957), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 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) [2021-11-04 07:18:06,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:18:19,033 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:21:06,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:21:06,248 INFO L93 Difference]: Finished difference Result 35758 states and 52079 transitions. [2021-11-04 07:21:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 07:21:06,252 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 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 273 [2021-11-04 07:21:06,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:21:06,342 INFO L225 Difference]: With dead ends: 35758 [2021-11-04 07:21:06,343 INFO L226 Difference]: Without dead ends: 17854 [2021-11-04 07:21:06,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:21:06,390 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25327 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 168420.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 25329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 126.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25327 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 180088.55ms IncrementalHoareTripleChecker+Time [2021-11-04 07:21:06,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 25329 Unknown, 0 Unchecked, 126.46ms Time], IncrementalHoareTripleChecker [0 Valid, 25327 Invalid, 2 Unknown, 0 Unchecked, 180088.55ms Time] [2021-11-04 07:21:06,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17854 states. [2021-11-04 07:21:06,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17854 to 17854. [2021-11-04 07:21:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17854 states, 17794 states have (on average 1.4219399797684613) internal successors, (25302), 17817 states have internal predecessors, (25302), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-04 07:21:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17854 states to 17854 states and 25370 transitions. [2021-11-04 07:21:06,802 INFO L78 Accepts]: Start accepts. Automaton has 17854 states and 25370 transitions. Word has length 273 [2021-11-04 07:21:06,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:21:06,804 INFO L470 AbstractCegarLoop]: Abstraction has 17854 states and 25370 transitions. [2021-11-04 07:21:06,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 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) [2021-11-04 07:21:06,809 INFO L276 IsEmpty]: Start isEmpty. Operand 17854 states and 25370 transitions. [2021-11-04 07:21:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-04 07:21:06,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:21:06,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:21:06,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 07:21:06,816 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 07:21:06,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:21:06,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1012733375, now seen corresponding path program 1 times [2021-11-04 07:21:06,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:21:06,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742228599] [2021-11-04 07:21:06,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:21:06,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:21:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:21:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:21:07,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:21:07,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742228599] [2021-11-04 07:21:07,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742228599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:21:07,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:21:07,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:21:07,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274992904] [2021-11-04 07:21:07,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:21:07,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:21:07,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:21:07,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:21:07,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:21:07,492 INFO L87 Difference]: Start difference. First operand 17854 states and 25370 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2021-11-04 07:21:09,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:21:32,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:27:01,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:27:01,630 INFO L93 Difference]: Finished difference Result 35475 states and 50509 transitions. [2021-11-04 07:27:01,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:27:01,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 273 [2021-11-04 07:27:01,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:27:01,693 INFO L225 Difference]: With dead ends: 35475 [2021-11-04 07:27:01,693 INFO L226 Difference]: Without dead ends: 17857 [2021-11-04 07:27:01,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:27:01,728 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 24903 mSDsCounter, 0 mSdLazyCounter, 50597 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 331287.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 50603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 405.37ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50597 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 351713.37ms IncrementalHoareTripleChecker+Time [2021-11-04 07:27:01,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 50603 Unknown, 0 Unchecked, 405.37ms Time], IncrementalHoareTripleChecker [4 Valid, 50597 Invalid, 2 Unknown, 0 Unchecked, 351713.37ms Time] [2021-11-04 07:27:01,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17857 states. [2021-11-04 07:27:02,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17857 to 17857. [2021-11-04 07:27:02,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17857 states, 17797 states have (on average 1.4218688543012867) internal successors, (25305), 17820 states have internal predecessors, (25305), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-04 07:27:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17857 states to 17857 states and 25373 transitions. [2021-11-04 07:27:02,112 INFO L78 Accepts]: Start accepts. Automaton has 17857 states and 25373 transitions. Word has length 273 [2021-11-04 07:27:02,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:27:02,118 INFO L470 AbstractCegarLoop]: Abstraction has 17857 states and 25373 transitions. [2021-11-04 07:27:02,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2021-11-04 07:27:02,119 INFO L276 IsEmpty]: Start isEmpty. Operand 17857 states and 25373 transitions. [2021-11-04 07:27:02,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-04 07:27:02,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:27:02,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:27:02,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 07:27:02,121 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 07:27:02,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:27:02,122 INFO L85 PathProgramCache]: Analyzing trace with hash 993676886, now seen corresponding path program 1 times [2021-11-04 07:27:02,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:27:02,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818667459] [2021-11-04 07:27:02,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:27:02,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:27:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:27:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 07:27:02,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:27:02,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818667459] [2021-11-04 07:27:02,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818667459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:27:02,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:27:02,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:27:02,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171712069] [2021-11-04 07:27:02,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:27:02,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:27:02,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:27:02,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:27:02,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:27:02,673 INFO L87 Difference]: Start difference. First operand 17857 states and 25373 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2021-11-04 07:27:04,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:27:28,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15