./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 fcb8e130 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-fcb8e13 [2021-11-23 00:09:48,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 00:09:48,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 00:09:48,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 00:09:48,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 00:09:48,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 00:09:48,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 00:09:48,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 00:09:48,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 00:09:48,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 00:09:48,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 00:09:48,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 00:09:48,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 00:09:48,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 00:09:48,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 00:09:48,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 00:09:48,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 00:09:48,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 00:09:48,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 00:09:48,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 00:09:48,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 00:09:48,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 00:09:48,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 00:09:48,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 00:09:48,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 00:09:48,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 00:09:48,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 00:09:48,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 00:09:48,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 00:09:48,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 00:09:48,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 00:09:48,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 00:09:48,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 00:09:48,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 00:09:48,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 00:09:48,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 00:09:48,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 00:09:48,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 00:09:48,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 00:09:48,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 00:09:48,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 00:09:48,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 00:09:49,007 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 00:09:49,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 00:09:49,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 00:09:49,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 00:09:49,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 00:09:49,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 00:09:49,009 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 00:09:49,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 00:09:49,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 00:09:49,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 00:09:49,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 00:09:49,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 00:09:49,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 00:09:49,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 00:09:49,011 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 00:09:49,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 00:09:49,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 00:09:49,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 00:09:49,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 00:09:49,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 00:09:49,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 00:09:49,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 00:09:49,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 00:09:49,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 00:09:49,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 00:09:49,013 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 00:09:49,014 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 00:09:49,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 00:09:49,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 00:09:49,014 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b45d894549c3d959709f16d175c155effcb8f4008755bf9537dca57ce5b6aecf [2021-11-23 00:09:49,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 00:09:49,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 00:09:49,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 00:09:49,264 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 00:09:49,266 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 00:09:49,268 INFO L432 ainManager$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 [2021-11-23 00:09:49,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eadf814c6/f612a0cc91a3440ebe844682b120b190/FLAG7ffb042a5 [2021-11-23 00:09:50,000 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 00:09:50,001 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 [2021-11-23 00:09:50,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eadf814c6/f612a0cc91a3440ebe844682b120b190/FLAG7ffb042a5 [2021-11-23 00:09:50,098 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eadf814c6/f612a0cc91a3440ebe844682b120b190 [2021-11-23 00:09:50,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 00:09:50,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 00:09:50,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 00:09:50,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 00:09:50,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 00:09:50,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:09:50" (1/1) ... [2021-11-23 00:09:50,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321b02ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:09:50, skipping insertion in model container [2021-11-23 00:09:50,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:09:50" (1/1) ... [2021-11-23 00:09:50,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 00:09:50,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 00:09:51,965 WARN L230 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] [2021-11-23 00:09:52,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:09:52,095 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 00:09:52,408 WARN L230 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] [2021-11-23 00:09:52,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:09:52,536 INFO L208 MainTranslator]: Completed translation [2021-11-23 00:09:52,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:09:52 WrapperNode [2021-11-23 00:09:52,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 00:09:52,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 00:09:52,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 00:09:52,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 00:09:52,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:09:52" (1/1) ... [2021-11-23 00:09:52,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:09:52" (1/1) ... [2021-11-23 00:09:58,742 INFO L137 Inliner]: procedures = 311, calls = 2050, calls flagged for inlining = 551, calls inlined = 19336, statements flattened = 313712 [2021-11-23 00:09:58,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 00:09:58,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 00:09:58,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 00:09:58,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 00:09:58,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:09:52" (1/1) ... [2021-11-23 00:09:58,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:09:52" (1/1) ... [2021-11-23 00:10:00,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:09:52" (1/1) ... [2021-11-23 00:10:00,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:09:52" (1/1) ... [2021-11-23 00:10:03,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:09:52" (1/1) ... [2021-11-23 00:10:04,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:09:52" (1/1) ... [2021-11-23 00:10:04,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:09:52" (1/1) ... [2021-11-23 00:10:06,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 00:10:06,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 00:10:06,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 00:10:06,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 00:10:06,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:09:52" (1/1) ... [2021-11-23 00:10:06,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 00:10:06,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:10:06,094 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) [2021-11-23 00:10:06,095 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 [2021-11-23 00:10:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 00:10:06,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 00:10:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 00:10:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 00:10:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-23 00:10:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 00:10:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 00:10:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure nonseekable_open [2021-11-23 00:10:06,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 00:10:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 00:10:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 00:10:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 00:10:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 00:10:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 00:10:06,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 00:10:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 00:10:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 00:10:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 00:10:06,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 00:10:06,847 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 00:10:06,849 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 00:17:16,522 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 00:17:16,699 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 00:17:16,699 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 00:17:16,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:17:16 BoogieIcfgContainer [2021-11-23 00:17:16,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 00:17:16,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 00:17:16,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 00:17:16,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 00:17:16,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:09:50" (1/3) ... [2021-11-23 00:17:16,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd48e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:17:16, skipping insertion in model container [2021-11-23 00:17:16,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:09:52" (2/3) ... [2021-11-23 00:17:16,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd48e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:17:16, skipping insertion in model container [2021-11-23 00:17:16,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:17:16" (3/3) ... [2021-11-23 00:17:16,761 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--block--loop.ko-entry_point.cil.out.i [2021-11-23 00:17:16,767 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 00:17:16,768 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 51 error locations. [2021-11-23 00:17:16,975 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 00:17:16,982 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 [2021-11-23 00:17:16,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2021-11-23 00:17:18,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 56589 states, 56537 states have (on average 1.481737623149442) internal successors, (83773), 56588 states have internal predecessors, (83773), 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) [2021-11-23 00:17:18,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-23 00:17:18,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:17:18,167 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] [2021-11-23 00:17:18,167 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)] === [2021-11-23 00:17:18,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:17:18,180 INFO L85 PathProgramCache]: Analyzing trace with hash -641604571, now seen corresponding path program 1 times [2021-11-23 00:17:18,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:17:18,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144273002] [2021-11-23 00:17:18,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:17:18,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:17:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:17:19,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:17:19,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:17:19,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144273002] [2021-11-23 00:17:19,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144273002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:17:19,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:17:19,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 00:17:19,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705937952] [2021-11-23 00:17:19,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:17:19,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 00:17:19,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:17:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 00:17:19,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 00:17:19,163 INFO L87 Difference]: Start difference. First operand has 56589 states, 56537 states have (on average 1.481737623149442) internal successors, (83773), 56588 states have internal predecessors, (83773), 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 98.0) internal successors, (196), 2 states have internal predecessors, (196), 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) [2021-11-23 00:17:21,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:17:21,184 INFO L93 Difference]: Finished difference Result 113123 states and 167490 transitions. [2021-11-23 00:17:21,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 00:17:21,186 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 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 196 [2021-11-23 00:17:21,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:17:21,468 INFO L225 Difference]: With dead ends: 113123 [2021-11-23 00:17:21,468 INFO L226 Difference]: Without dead ends: 56521 [2021-11-23 00:17:21,609 INFO L932 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 [2021-11-23 00:17:21,613 INFO L933 BasicCegarLoop]: 83374 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83374 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:17:21,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 83374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:17:21,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56521 states. [2021-11-23 00:17:23,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56521 to 56521. [2021-11-23 00:17:23,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56521 states, 56470 states have (on average 1.4758987072782008) internal successors, (83344), 56520 states have internal predecessors, (83344), 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) [2021-11-23 00:17:23,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56521 states to 56521 states and 83344 transitions. [2021-11-23 00:17:23,936 INFO L78 Accepts]: Start accepts. Automaton has 56521 states and 83344 transitions. Word has length 196 [2021-11-23 00:17:23,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:17:23,937 INFO L470 AbstractCegarLoop]: Abstraction has 56521 states and 83344 transitions. [2021-11-23 00:17:23,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 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) [2021-11-23 00:17:23,938 INFO L276 IsEmpty]: Start isEmpty. Operand 56521 states and 83344 transitions. [2021-11-23 00:17:23,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-23 00:17:23,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:17:23,948 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] [2021-11-23 00:17:23,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 00:17:23,949 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)] === [2021-11-23 00:17:23,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:17:23,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1933867441, now seen corresponding path program 1 times [2021-11-23 00:17:23,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:17:23,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156011653] [2021-11-23 00:17:23,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:17:23,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:17:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:17:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:17:24,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:17:24,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156011653] [2021-11-23 00:17:24,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156011653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:17:24,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:17:24,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 00:17:24,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158310014] [2021-11-23 00:17:24,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:17:24,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:17:24,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:17:24,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:17:24,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:17:24,572 INFO L87 Difference]: Start difference. First operand 56521 states and 83344 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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) [2021-11-23 00:17:28,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:17:28,169 INFO L93 Difference]: Finished difference Result 169113 states and 249514 transitions. [2021-11-23 00:17:28,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:17:28,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 196 [2021-11-23 00:17:28,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:17:28,661 INFO L225 Difference]: With dead ends: 169113 [2021-11-23 00:17:28,662 INFO L226 Difference]: Without dead ends: 112762 [2021-11-23 00:17:28,849 INFO L932 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 [2021-11-23 00:17:28,851 INFO L933 BasicCegarLoop]: 83341 mSDtfsCounter, 83110 mSDsluCounter, 83226 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83110 SdHoareTripleChecker+Valid, 166567 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 00:17:28,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83110 Valid, 166567 Invalid, 15 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 00:17:29,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112762 states. [2021-11-23 00:17:31,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112762 to 112662. [2021-11-23 00:17:31,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112662 states, 112611 states have (on average 1.4768539485485432) internal successors, (166310), 112661 states have internal predecessors, (166310), 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) [2021-11-23 00:17:32,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112662 states to 112662 states and 166310 transitions. [2021-11-23 00:17:32,221 INFO L78 Accepts]: Start accepts. Automaton has 112662 states and 166310 transitions. Word has length 196 [2021-11-23 00:17:32,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:17:32,227 INFO L470 AbstractCegarLoop]: Abstraction has 112662 states and 166310 transitions. [2021-11-23 00:17:32,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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) [2021-11-23 00:17:32,229 INFO L276 IsEmpty]: Start isEmpty. Operand 112662 states and 166310 transitions. [2021-11-23 00:17:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-23 00:17:32,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:17:32,244 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] [2021-11-23 00:17:32,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 00:17:32,244 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)] === [2021-11-23 00:17:32,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:17:32,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1574092996, now seen corresponding path program 1 times [2021-11-23 00:17:32,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:17:32,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552259439] [2021-11-23 00:17:32,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:17:32,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:17:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:17:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:17:32,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:17:32,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552259439] [2021-11-23 00:17:32,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552259439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:17:32,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:17:32,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 00:17:32,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003305453] [2021-11-23 00:17:32,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:17:32,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:17:32,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:17:32,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:17:32,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:17:32,706 INFO L87 Difference]: Start difference. First operand 112662 states and 166310 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2021-11-23 00:17:35,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:17:35,651 INFO L93 Difference]: Finished difference Result 236768 states and 349652 transitions. [2021-11-23 00:17:35,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:17:35,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 200 [2021-11-23 00:17:35,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:17:36,110 INFO L225 Difference]: With dead ends: 236768 [2021-11-23 00:17:36,111 INFO L226 Difference]: Without dead ends: 124276 [2021-11-23 00:17:36,365 INFO L932 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 [2021-11-23 00:17:36,373 INFO L933 BasicCegarLoop]: 83356 mSDtfsCounter, 8851 mSDsluCounter, 83130 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8851 SdHoareTripleChecker+Valid, 166486 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 00:17:36,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8851 Valid, 166486 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 00:17:37,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124276 states. [2021-11-23 00:17:39,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124276 to 124263. [2021-11-23 00:17:39,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124263 states, 124212 states have (on average 1.477473996071233) internal successors, (183520), 124262 states have internal predecessors, (183520), 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) [2021-11-23 00:17:39,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124263 states to 124263 states and 183520 transitions. [2021-11-23 00:17:39,994 INFO L78 Accepts]: Start accepts. Automaton has 124263 states and 183520 transitions. Word has length 200 [2021-11-23 00:17:39,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:17:39,995 INFO L470 AbstractCegarLoop]: Abstraction has 124263 states and 183520 transitions. [2021-11-23 00:17:39,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2021-11-23 00:17:39,996 INFO L276 IsEmpty]: Start isEmpty. Operand 124263 states and 183520 transitions. [2021-11-23 00:17:40,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-23 00:17:40,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:17:40,003 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] [2021-11-23 00:17:40,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 00:17:40,004 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)] === [2021-11-23 00:17:40,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:17:40,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1017005643, now seen corresponding path program 1 times [2021-11-23 00:17:40,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:17:40,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644245124] [2021-11-23 00:17:40,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:17:40,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:17:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:17:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:17:40,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:17:40,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644245124] [2021-11-23 00:17:40,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644245124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:17:40,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:17:40,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 00:17:40,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835691255] [2021-11-23 00:17:40,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:17:40,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:17:40,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:17:40,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:17:40,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:17:40,466 INFO L87 Difference]: Start difference. First operand 124263 states and 183520 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 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) [2021-11-23 00:17:45,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:17:45,389 INFO L93 Difference]: Finished difference Result 372347 states and 550073 transitions. [2021-11-23 00:17:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:17:45,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 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 202 [2021-11-23 00:17:45,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:17:46,120 INFO L225 Difference]: With dead ends: 372347 [2021-11-23 00:17:46,120 INFO L226 Difference]: Without dead ends: 248243 [2021-11-23 00:17:46,338 INFO L932 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 [2021-11-23 00:17:46,339 INFO L933 BasicCegarLoop]: 83560 mSDtfsCounter, 83020 mSDsluCounter, 82978 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83020 SdHoareTripleChecker+Valid, 166538 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 00:17:46,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83020 Valid, 166538 Invalid, 295 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [50 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 00:17:46,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248243 states. [2021-11-23 00:17:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248243 to 248093. [2021-11-23 00:17:51,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248093 states, 248042 states have (on average 1.4776932938776497) internal successors, (366530), 248092 states have internal predecessors, (366530), 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) [2021-11-23 00:17:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248093 states to 248093 states and 366530 transitions. [2021-11-23 00:17:52,483 INFO L78 Accepts]: Start accepts. Automaton has 248093 states and 366530 transitions. Word has length 202 [2021-11-23 00:17:52,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:17:52,484 INFO L470 AbstractCegarLoop]: Abstraction has 248093 states and 366530 transitions. [2021-11-23 00:17:52,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 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) [2021-11-23 00:17:52,484 INFO L276 IsEmpty]: Start isEmpty. Operand 248093 states and 366530 transitions. [2021-11-23 00:17:52,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-23 00:17:52,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:17:52,503 INFO L514 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, 1] [2021-11-23 00:17:52,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 00:17:52,504 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)] === [2021-11-23 00:17:52,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:17:52,504 INFO L85 PathProgramCache]: Analyzing trace with hash -110686931, now seen corresponding path program 1 times [2021-11-23 00:17:52,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:17:52,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790074247] [2021-11-23 00:17:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:17:52,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:17:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:17:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:17:53,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:17:53,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790074247] [2021-11-23 00:17:53,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790074247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:17:53,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:17:53,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 00:17:53,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008163897] [2021-11-23 00:17:53,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:17:53,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 00:17:53,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:17:53,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 00:17:53,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 00:17:53,005 INFO L87 Difference]: Start difference. First operand 248093 states and 366530 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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)