./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-08_1a-drivers--block--loop.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-08_1a-drivers--block--loop.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 b45d894549c3d959709f16d175c155effcb8f4008755bf9537dca57ce5b6aecf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:39:12,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:39:12,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:39:12,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:39:12,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:39:12,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:39:12,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:39:12,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:39:12,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:39:12,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:39:12,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:39:12,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:39:12,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:39:12,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:39:12,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:39:12,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:39:12,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:39:12,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:39:12,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:39:12,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:39:12,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:39:12,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:39:12,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:39:12,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:39:12,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:39:12,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:39:12,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:39:12,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:39:12,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:39:12,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:39:12,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:39:12,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:39:12,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:39:12,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:39:12,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:39:12,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:39:12,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:39:12,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:39:12,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:39:12,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:39:12,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:39:12,941 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:39:12,968 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:39:12,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:39:12,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:39:12,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:39:12,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:39:12,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:39:12,970 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:39:12,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:39:12,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:39:12,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:39:12,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:39:12,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:39:12,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:39:12,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:39:12,972 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:39:12,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:39:12,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:39:12,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:39:12,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:39:12,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:39:12,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:39:12,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:39:12,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:39:12,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:39:12,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:39:12,973 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:39:12,973 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:39:12,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:39:12,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:39:12,974 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b45d894549c3d959709f16d175c155effcb8f4008755bf9537dca57ce5b6aecf [2021-11-06 15:39:13,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:39:13,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:39:13,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:39:13,179 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:39:13,180 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:39:13,180 INFO L432 ainManager$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-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2021-11-06 15:39:13,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8508c0c/f4dcc8d31ebb402db30dca9cb2a42c7e/FLAG17185f83b [2021-11-06 15:39:13,838 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:39:13,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2021-11-06 15:39:13,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8508c0c/f4dcc8d31ebb402db30dca9cb2a42c7e/FLAG17185f83b [2021-11-06 15:39:14,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db8508c0c/f4dcc8d31ebb402db30dca9cb2a42c7e [2021-11-06 15:39:14,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:39:14,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:39:14,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:39:14,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:39:14,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:39:14,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:39:14" (1/1) ... [2021-11-06 15:39:14,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590fa3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:39:14, skipping insertion in model container [2021-11-06 15:39:14,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:39:14" (1/1) ... [2021-11-06 15:39:14,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:39:14,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:39:15,529 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-08_1a-drivers--block--loop.ko-entry_point.cil.out.i[237426,237439] [2021-11-06 15:39:15,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:39:15,615 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:39:15,888 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-08_1a-drivers--block--loop.ko-entry_point.cil.out.i[237426,237439] [2021-11-06 15:39:15,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:39:15,996 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:39:15,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:39:15 WrapperNode [2021-11-06 15:39:15,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:39:15,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:39:15,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:39:15,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:39:16,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:39:15" (1/1) ... [2021-11-06 15:39:16,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:39:15" (1/1) ... [2021-11-06 15:39:21,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:39:21,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:39:21,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:39:21,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:39:21,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:39:15" (1/1) ... [2021-11-06 15:39:21,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:39:15" (1/1) ... [2021-11-06 15:39:23,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:39:15" (1/1) ... [2021-11-06 15:39:23,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:39:15" (1/1) ... [2021-11-06 15:39:25,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:39:15" (1/1) ... [2021-11-06 15:39:25,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:39:15" (1/1) ... [2021-11-06 15:39:26,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:39:15" (1/1) ... [2021-11-06 15:39:27,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:39:27,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:39:27,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:39:27,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:39:27,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:39:15" (1/1) ... [2021-11-06 15:39:27,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:39:27,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:39:27,521 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 15:39:27,527 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 15:39:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:39:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:39:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:39:27,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:39:27,557 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-06 15:39:27,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:39:27,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:39:27,557 INFO L130 BoogieDeclarations]: Found specification of procedure nonseekable_open [2021-11-06 15:39:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:39:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:39:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:39:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:39:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:39:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:39:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 15:39:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:39:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:39:27,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:46:16,410 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:46:16,411 INFO L299 CfgBuilder]: Removed 38320 assume(true) statements. [2021-11-06 15:46:16,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:46:16 BoogieIcfgContainer [2021-11-06 15:46:16,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:46:16,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:46:16,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:46:16,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:46:16,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:39:14" (1/3) ... [2021-11-06 15:46:16,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7774bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:46:16, skipping insertion in model container [2021-11-06 15:46:16,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:39:15" (2/3) ... [2021-11-06 15:46:16,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7774bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:46:16, skipping insertion in model container [2021-11-06 15:46:16,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:46:16" (3/3) ... [2021-11-06 15:46:16,461 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2021-11-06 15:46:16,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:46:16,465 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 51 error locations. [2021-11-06 15:46:16,609 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:46:16,615 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 15:46:16,615 INFO L340 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2021-11-06 15:46:17,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 53932 states, 53880 states have (on average 1.505493689680772) internal successors, (81116), 53931 states have internal predecessors, (81116), 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 15:46:17,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-06 15:46:17,206 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:46:17,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:17,207 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-06 15:46:17,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:46:17,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1764250795, now seen corresponding path program 1 times [2021-11-06 15:46:17,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:46:17,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486166597] [2021-11-06 15:46:17,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:46:17,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:46:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:46:17,642 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 15:46:17,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:46:17,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486166597] [2021-11-06 15:46:17,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486166597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:46:17,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:46:17,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:46:17,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14209615] [2021-11-06 15:46:17,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:46:17,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:46:17,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:46:17,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:46:17,732 INFO L87 Difference]: Start difference. First operand has 53932 states, 53880 states have (on average 1.505493689680772) internal successors, (81116), 53931 states have internal predecessors, (81116), 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 97.5) internal successors, (195), 2 states have internal predecessors, (195), 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 15:46:19,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:46:19,086 INFO L93 Difference]: Finished difference Result 107860 states and 162227 transitions. [2021-11-06 15:46:19,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:46:19,087 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 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 195 [2021-11-06 15:46:19,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:46:19,277 INFO L225 Difference]: With dead ends: 107860 [2021-11-06 15:46:19,277 INFO L226 Difference]: Without dead ends: 53915 [2021-11-06 15:46:19,698 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 15:46:19,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53915 states. [2021-11-06 15:46:20,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53915 to 53915. [2021-11-06 15:46:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53915 states, 53864 states have (on average 1.498923214020496) internal successors, (80738), 53914 states have internal predecessors, (80738), 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 15:46:20,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53915 states to 53915 states and 80738 transitions. [2021-11-06 15:46:21,252 INFO L78 Accepts]: Start accepts. Automaton has 53915 states and 80738 transitions. Word has length 195 [2021-11-06 15:46:21,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:46:21,253 INFO L470 AbstractCegarLoop]: Abstraction has 53915 states and 80738 transitions. [2021-11-06 15:46:21,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 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 15:46:21,253 INFO L276 IsEmpty]: Start isEmpty. Operand 53915 states and 80738 transitions. [2021-11-06 15:46:21,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-06 15:46:21,258 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:46:21,259 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:21,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:46:21,259 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-06 15:46:21,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:46:21,260 INFO L85 PathProgramCache]: Analyzing trace with hash -697558037, now seen corresponding path program 1 times [2021-11-06 15:46:21,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:46:21,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894865433] [2021-11-06 15:46:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:46:21,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:46:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:46:21,598 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 15:46:21,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:46:21,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894865433] [2021-11-06 15:46:21,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894865433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:46:21,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:46:21,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:46:21,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360212587] [2021-11-06 15:46:21,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:46:21,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:46:21,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:46:21,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:46:21,604 INFO L87 Difference]: Start difference. First operand 53915 states and 80738 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 15:46:24,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:46:24,883 INFO L93 Difference]: Finished difference Result 161299 states and 241700 transitions. [2021-11-06 15:46:24,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:46:24,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 195 [2021-11-06 15:46:24,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:46:25,200 INFO L225 Difference]: With dead ends: 161299 [2021-11-06 15:46:25,200 INFO L226 Difference]: Without dead ends: 107554 [2021-11-06 15:46:25,292 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 15:46:25,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107554 states. [2021-11-06 15:46:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107554 to 107454. [2021-11-06 15:46:27,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107454 states, 107403 states have (on average 1.499976723182779) internal successors, (161102), 107453 states have internal predecessors, (161102), 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 15:46:27,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107454 states to 107454 states and 161102 transitions. [2021-11-06 15:46:27,728 INFO L78 Accepts]: Start accepts. Automaton has 107454 states and 161102 transitions. Word has length 195 [2021-11-06 15:46:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:46:27,728 INFO L470 AbstractCegarLoop]: Abstraction has 107454 states and 161102 transitions. [2021-11-06 15:46:27,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 15:46:27,729 INFO L276 IsEmpty]: Start isEmpty. Operand 107454 states and 161102 transitions. [2021-11-06 15:46:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-06 15:46:27,737 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:46:27,737 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:27,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:46:27,738 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-06 15:46:27,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:46:27,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2116420847, now seen corresponding path program 1 times [2021-11-06 15:46:27,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:46:27,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181753469] [2021-11-06 15:46:27,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:46:27,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:46:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:46:27,973 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 15:46:27,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:46:27,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181753469] [2021-11-06 15:46:27,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181753469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:46:27,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:46:27,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:46:27,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670087108] [2021-11-06 15:46:27,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:46:27,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:46:27,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:46:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:46:27,981 INFO L87 Difference]: Start difference. First operand 107454 states and 161102 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 15:46:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:46:30,049 INFO L93 Difference]: Finished difference Result 225876 states and 338760 transitions. [2021-11-06 15:46:30,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:46:30,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 199 [2021-11-06 15:46:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:46:30,395 INFO L225 Difference]: With dead ends: 225876 [2021-11-06 15:46:30,395 INFO L226 Difference]: Without dead ends: 118592 [2021-11-06 15:46:30,580 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 15:46:30,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118592 states. [2021-11-06 15:46:32,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118592 to 118580. [2021-11-06 15:46:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118580 states, 118529 states have (on average 1.5003669987935442) internal successors, (177837), 118579 states have internal predecessors, (177837), 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 15:46:33,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118580 states to 118580 states and 177837 transitions. [2021-11-06 15:46:33,548 INFO L78 Accepts]: Start accepts. Automaton has 118580 states and 177837 transitions. Word has length 199 [2021-11-06 15:46:33,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:46:33,548 INFO L470 AbstractCegarLoop]: Abstraction has 118580 states and 177837 transitions. [2021-11-06 15:46:33,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 15:46:33,549 INFO L276 IsEmpty]: Start isEmpty. Operand 118580 states and 177837 transitions. [2021-11-06 15:46:33,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-06 15:46:33,553 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:46:33,553 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:33,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:46:33,554 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-06 15:46:33,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:46:33,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1171494575, now seen corresponding path program 1 times [2021-11-06 15:46:33,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:46:33,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210784072] [2021-11-06 15:46:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:46:33,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:46:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:46:33,812 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 15:46:33,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:46:33,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210784072] [2021-11-06 15:46:33,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210784072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:46:33,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:46:33,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:46:33,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993465737] [2021-11-06 15:46:33,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:46:33,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:46:33,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:46:33,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:46:33,814 INFO L87 Difference]: Start difference. First operand 118580 states and 177837 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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 15:46:37,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:46:37,669 INFO L93 Difference]: Finished difference Result 355298 states and 533024 transitions. [2021-11-06 15:46:37,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:46:37,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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 201 [2021-11-06 15:46:37,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:46:38,394 INFO L225 Difference]: With dead ends: 355298 [2021-11-06 15:46:38,394 INFO L226 Difference]: Without dead ends: 236878 [2021-11-06 15:46:38,546 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 [2021-11-06 15:46:38,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236878 states. [2021-11-06 15:46:42,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236878 to 236728. [2021-11-06 15:46:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236728 states, 236677 states have (on average 1.5006316625612122) internal successors, (355165), 236727 states have internal predecessors, (355165), 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 15:46:43,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236728 states to 236728 states and 355165 transitions. [2021-11-06 15:46:43,269 INFO L78 Accepts]: Start accepts. Automaton has 236728 states and 355165 transitions. Word has length 201 [2021-11-06 15:46:43,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:46:43,270 INFO L470 AbstractCegarLoop]: Abstraction has 236728 states and 355165 transitions. [2021-11-06 15:46:43,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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 15:46:43,270 INFO L276 IsEmpty]: Start isEmpty. Operand 236728 states and 355165 transitions. [2021-11-06 15:46:43,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-06 15:46:43,283 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:46:43,283 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:43,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:46:43,284 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-06 15:46:43,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:46:43,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1198915531, now seen corresponding path program 1 times [2021-11-06 15:46:43,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:46:43,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491004407] [2021-11-06 15:46:43,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:46:43,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:46:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:46:43,564 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 15:46:43,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:46:43,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491004407] [2021-11-06 15:46:43,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491004407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:46:43,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:46:43,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:46:43,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371466745] [2021-11-06 15:46:43,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:46:43,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:46:43,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:46:43,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:46:43,566 INFO L87 Difference]: Start difference. First operand 236728 states and 355165 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 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)