./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.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 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 02:47:20,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 02:47:20,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 02:47:20,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 02:47:20,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 02:47:20,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 02:47:20,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 02:47:20,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 02:47:20,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 02:47:20,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 02:47:20,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 02:47:20,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 02:47:20,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 02:47:20,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 02:47:20,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 02:47:20,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 02:47:20,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 02:47:20,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 02:47:20,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 02:47:20,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 02:47:20,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 02:47:20,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 02:47:20,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 02:47:20,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 02:47:20,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 02:47:20,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 02:47:20,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 02:47:20,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 02:47:20,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 02:47:20,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 02:47:20,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 02:47:20,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 02:47:20,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 02:47:20,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 02:47:20,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 02:47:20,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 02:47:20,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 02:47:20,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 02:47:20,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 02:47:20,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 02:47:20,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 02:47:20,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 02:47:20,613 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 02:47:20,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 02:47:20,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 02:47:20,614 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 02:47:20,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 02:47:20,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 02:47:20,616 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 02:47:20,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 02:47:20,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 02:47:20,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 02:47:20,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 02:47:20,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 02:47:20,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 02:47:20,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 02:47:20,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 02:47:20,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 02:47:20,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 02:47:20,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 02:47:20,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 02:47:20,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 02:47:20,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 02:47:20,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 02:47:20,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 02:47:20,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 02:47:20,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 02:47:20,619 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 02:47:20,619 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 02:47:20,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 02:47:20,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 02:47:20,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a [2021-11-03 02:47:20,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 02:47:20,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 02:47:20,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 02:47:20,836 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 02:47:20,837 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 02:47:20,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2021-11-03 02:47:20,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1a62bd94/d681f939b5b945c293e3185f7b2f937d/FLAGff02b1723 [2021-11-03 02:47:21,539 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 02:47:21,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2021-11-03 02:47:21,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1a62bd94/d681f939b5b945c293e3185f7b2f937d/FLAGff02b1723 [2021-11-03 02:47:21,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1a62bd94/d681f939b5b945c293e3185f7b2f937d [2021-11-03 02:47:21,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 02:47:21,929 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 02:47:21,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 02:47:21,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 02:47:21,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 02:47:21,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:47:21" (1/1) ... [2021-11-03 02:47:21,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b594830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:21, skipping insertion in model container [2021-11-03 02:47:21,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:47:21" (1/1) ... [2021-11-03 02:47:21,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 02:47:22,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 02:47:23,784 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2021-11-03 02:47:23,788 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2021-11-03 02:47:23,791 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2021-11-03 02:47:23,792 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2021-11-03 02:47:23,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 02:47:23,849 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 02:47:24,096 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2021-11-03 02:47:24,097 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2021-11-03 02:47:24,097 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2021-11-03 02:47:24,097 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2021-11-03 02:47:24,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 02:47:24,226 INFO L208 MainTranslator]: Completed translation [2021-11-03 02:47:24,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:24 WrapperNode [2021-11-03 02:47:24,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 02:47:24,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 02:47:24,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 02:47:24,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 02:47:24,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:24" (1/1) ... [2021-11-03 02:47:24,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:24" (1/1) ... [2021-11-03 02:47:26,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 02:47:26,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 02:47:26,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 02:47:26,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 02:47:26,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:24" (1/1) ... [2021-11-03 02:47:26,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:24" (1/1) ... [2021-11-03 02:47:26,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:24" (1/1) ... [2021-11-03 02:47:26,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:24" (1/1) ... [2021-11-03 02:47:27,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:24" (1/1) ... [2021-11-03 02:47:27,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:24" (1/1) ... [2021-11-03 02:47:27,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:24" (1/1) ... [2021-11-03 02:47:27,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 02:47:27,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 02:47:27,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 02:47:27,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 02:47:27,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:24" (1/1) ... [2021-11-03 02:47:27,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 02:47:27,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 02:47:27,358 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) [2021-11-03 02:47:27,363 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 [2021-11-03 02:47:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 02:47:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-03 02:47:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-03 02:47:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 02:47:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 02:47:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 02:47:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 02:47:27,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 02:47:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 02:47:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 02:47:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 02:47:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 02:47:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 02:47:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 02:47:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 02:47:31,837 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-03 02:47:31,838 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-03 02:47:31,838 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-03 02:47:31,838 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-03 02:47:31,839 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 02:47:31,842 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-03 02:47:31,890 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 02:47:31,890 INFO L299 CfgBuilder]: Removed 19124 assume(true) statements. [2021-11-03 02:47:31,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:47:31 BoogieIcfgContainer [2021-11-03 02:47:31,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 02:47:31,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 02:47:31,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 02:47:31,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 02:47:31,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:47:21" (1/3) ... [2021-11-03 02:47:31,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8db670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:47:31, skipping insertion in model container [2021-11-03 02:47:31,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:24" (2/3) ... [2021-11-03 02:47:31,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8db670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:47:31, skipping insertion in model container [2021-11-03 02:47:31,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:47:31" (3/3) ... [2021-11-03 02:47:31,906 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2021-11-03 02:47:31,911 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 02:47:31,911 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 66 error locations. [2021-11-03 02:47:31,970 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 02:47:31,977 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 [2021-11-03 02:47:31,977 INFO L340 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2021-11-03 02:47:32,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 11769 states, 11703 states have (on average 1.1825173032555756) internal successors, (13839), 11768 states have internal predecessors, (13839), 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) [2021-11-03 02:47:32,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 02:47:32,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:47:32,094 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] [2021-11-03 02:47:32,095 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-03 02:47:32,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:47:32,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1274386020, now seen corresponding path program 1 times [2021-11-03 02:47:32,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:47:32,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059261933] [2021-11-03 02:47:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:47:32,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:47:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:47:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:47:32,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:47:32,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059261933] [2021-11-03 02:47:32,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059261933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:47:32,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:47:32,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:47:32,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133051344] [2021-11-03 02:47:32,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:47:32,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:47:32,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:47:32,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:47:32,575 INFO L87 Difference]: Start difference. First operand has 11769 states, 11703 states have (on average 1.1825173032555756) internal successors, (13839), 11768 states have internal predecessors, (13839), 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 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-03 02:47:57,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:47:57,141 INFO L93 Difference]: Finished difference Result 34710 states and 40737 transitions. [2021-11-03 02:47:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:47:57,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-03 02:47:57,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:47:57,224 INFO L225 Difference]: With dead ends: 34710 [2021-11-03 02:47:57,225 INFO L226 Difference]: Without dead ends: 22751 [2021-11-03 02:47:57,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:47:57,256 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 13219 mSDsluCounter, 13569 mSDsCounter, 0 mSdLazyCounter, 27029 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19206.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13219 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 27040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.58ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23546.12ms IncrementalHoareTripleChecker+Time [2021-11-03 02:47:57,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13219 Valid, 304 Invalid, 27040 Unknown, 0 Unchecked, 55.58ms Time], IncrementalHoareTripleChecker [11 Valid, 27029 Invalid, 0 Unknown, 0 Unchecked, 23546.12ms Time] [2021-11-03 02:47:57,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22751 states. [2021-11-03 02:47:57,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22751 to 22235. [2021-11-03 02:47:57,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22235 states, 22169 states have (on average 1.161712300960801) internal successors, (25754), 22234 states have internal predecessors, (25754), 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) [2021-11-03 02:47:57,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22235 states to 22235 states and 25754 transitions. [2021-11-03 02:47:57,860 INFO L78 Accepts]: Start accepts. Automaton has 22235 states and 25754 transitions. Word has length 42 [2021-11-03 02:47:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:47:57,862 INFO L470 AbstractCegarLoop]: Abstraction has 22235 states and 25754 transitions. [2021-11-03 02:47:57,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-03 02:47:57,864 INFO L276 IsEmpty]: Start isEmpty. Operand 22235 states and 25754 transitions. [2021-11-03 02:47:57,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-03 02:47:57,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:47:57,869 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] [2021-11-03 02:47:57,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 02:47:57,869 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-03 02:47:57,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:47:57,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1532558275, now seen corresponding path program 1 times [2021-11-03 02:47:57,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:47:57,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673217776] [2021-11-03 02:47:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:47:57,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:47:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:47:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:47:58,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:47:58,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673217776] [2021-11-03 02:47:58,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673217776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:47:58,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:47:58,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:47:58,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358180188] [2021-11-03 02:47:58,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:47:58,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:47:58,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:47:58,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:47:58,011 INFO L87 Difference]: Start difference. First operand 22235 states and 25754 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-03 02:48:00,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:48:24,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:48:24,066 INFO L93 Difference]: Finished difference Result 66291 states and 76801 transitions. [2021-11-03 02:48:24,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:48:24,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-03 02:48:24,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:48:24,169 INFO L225 Difference]: With dead ends: 66291 [2021-11-03 02:48:24,169 INFO L226 Difference]: Without dead ends: 44124 [2021-11-03 02:48:24,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:48:24,209 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13158 mSDsluCounter, 13364 mSDsCounter, 0 mSdLazyCounter, 26822 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21012.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13158 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.09ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24941.56ms IncrementalHoareTripleChecker+Time [2021-11-03 02:48:24,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13158 Valid, 0 Invalid, 26828 Unknown, 0 Unchecked, 38.09ms Time], IncrementalHoareTripleChecker [6 Valid, 26822 Invalid, 0 Unknown, 0 Unchecked, 24941.56ms Time] [2021-11-03 02:48:24,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44124 states. [2021-11-03 02:48:25,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44124 to 44070. [2021-11-03 02:48:25,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44070 states, 44004 states have (on average 1.1608944641396237) internal successors, (51084), 44069 states have internal predecessors, (51084), 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) [2021-11-03 02:48:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44070 states to 44070 states and 51084 transitions. [2021-11-03 02:48:25,147 INFO L78 Accepts]: Start accepts. Automaton has 44070 states and 51084 transitions. Word has length 43 [2021-11-03 02:48:25,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:48:25,148 INFO L470 AbstractCegarLoop]: Abstraction has 44070 states and 51084 transitions. [2021-11-03 02:48:25,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-03 02:48:25,152 INFO L276 IsEmpty]: Start isEmpty. Operand 44070 states and 51084 transitions. [2021-11-03 02:48:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 02:48:25,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:48:25,154 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] [2021-11-03 02:48:25,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 02:48:25,155 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-03 02:48:25,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:48:25,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1662480865, now seen corresponding path program 1 times [2021-11-03 02:48:25,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:48:25,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111824055] [2021-11-03 02:48:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:48:25,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:48:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:48:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:48:25,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:48:25,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111824055] [2021-11-03 02:48:25,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111824055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:48:25,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:48:25,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:48:25,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216870846] [2021-11-03 02:48:25,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:48:25,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:48:25,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:48:25,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:48:25,316 INFO L87 Difference]: Start difference. First operand 44070 states and 51084 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-03 02:48:47,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:48:47,866 INFO L93 Difference]: Finished difference Result 120460 states and 139842 transitions. [2021-11-03 02:48:47,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:48:47,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-11-03 02:48:47,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:48:48,024 INFO L225 Difference]: With dead ends: 120460 [2021-11-03 02:48:48,025 INFO L226 Difference]: Without dead ends: 76458 [2021-11-03 02:48:48,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:48:48,086 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10236 mSDsluCounter, 13010 mSDsCounter, 0 mSdLazyCounter, 26459 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17326.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10236 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.54ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20991.66ms IncrementalHoareTripleChecker+Time [2021-11-03 02:48:48,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10236 Valid, 0 Invalid, 26468 Unknown, 0 Unchecked, 35.54ms Time], IncrementalHoareTripleChecker [9 Valid, 26459 Invalid, 0 Unknown, 0 Unchecked, 20991.66ms Time] [2021-11-03 02:48:48,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76458 states. [2021-11-03 02:48:49,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76458 to 76136. [2021-11-03 02:48:49,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76136 states, 76070 states have (on average 1.163533587485211) internal successors, (88510), 76135 states have internal predecessors, (88510), 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) [2021-11-03 02:48:49,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76136 states to 76136 states and 88510 transitions. [2021-11-03 02:48:49,752 INFO L78 Accepts]: Start accepts. Automaton has 76136 states and 88510 transitions. Word has length 44 [2021-11-03 02:48:49,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:48:49,752 INFO L470 AbstractCegarLoop]: Abstraction has 76136 states and 88510 transitions. [2021-11-03 02:48:49,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-03 02:48:49,752 INFO L276 IsEmpty]: Start isEmpty. Operand 76136 states and 88510 transitions. [2021-11-03 02:48:49,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 02:48:49,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:48:49,753 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] [2021-11-03 02:48:49,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 02:48:49,754 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-03 02:48:49,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:48:49,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1690478766, now seen corresponding path program 1 times [2021-11-03 02:48:49,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:48:49,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445407264] [2021-11-03 02:48:49,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:48:49,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:48:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:48:49,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:48:49,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:48:49,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445407264] [2021-11-03 02:48:49,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445407264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:48:49,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:48:49,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:48:49,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617728762] [2021-11-03 02:48:49,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:48:49,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:48:49,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:48:49,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:48:49,837 INFO L87 Difference]: Start difference. First operand 76136 states and 88510 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2021-11-03 02:49:10,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:49:10,641 INFO L93 Difference]: Finished difference Result 126694 states and 147758 transitions. [2021-11-03 02:49:10,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:49:10,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2021-11-03 02:49:10,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:49:10,760 INFO L225 Difference]: With dead ends: 126694 [2021-11-03 02:49:10,761 INFO L226 Difference]: Without dead ends: 50626 [2021-11-03 02:49:10,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:49:10,897 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4441 mSDsluCounter, 13274 mSDsCounter, 0 mSdLazyCounter, 27144 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16174.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4441 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 27165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.65ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 27144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19265.40ms IncrementalHoareTripleChecker+Time [2021-11-03 02:49:10,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4441 Valid, 0 Invalid, 27165 Unknown, 0 Unchecked, 33.65ms Time], IncrementalHoareTripleChecker [21 Valid, 27144 Invalid, 0 Unknown, 0 Unchecked, 19265.40ms Time] [2021-11-03 02:49:11,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50626 states. [2021-11-03 02:49:11,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50626 to 50502. [2021-11-03 02:49:11,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50502 states, 50436 states have (on average 1.172218256800698) internal successors, (59122), 50501 states have internal predecessors, (59122), 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) [2021-11-03 02:49:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50502 states to 50502 states and 59122 transitions. [2021-11-03 02:49:12,029 INFO L78 Accepts]: Start accepts. Automaton has 50502 states and 59122 transitions. Word has length 47 [2021-11-03 02:49:12,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:49:12,029 INFO L470 AbstractCegarLoop]: Abstraction has 50502 states and 59122 transitions. [2021-11-03 02:49:12,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2021-11-03 02:49:12,029 INFO L276 IsEmpty]: Start isEmpty. Operand 50502 states and 59122 transitions. [2021-11-03 02:49:12,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 02:49:12,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:49:12,030 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] [2021-11-03 02:49:12,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 02:49:12,031 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-03 02:49:12,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:49:12,032 INFO L85 PathProgramCache]: Analyzing trace with hash 565947639, now seen corresponding path program 1 times [2021-11-03 02:49:12,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:49:12,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981113434] [2021-11-03 02:49:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:49:12,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:49:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:49:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:49:12,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:49:12,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981113434] [2021-11-03 02:49:12,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981113434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:49:12,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:49:12,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:49:12,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759719082] [2021-11-03 02:49:12,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:49:12,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:49:12,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:49:12,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:49:12,161 INFO L87 Difference]: Start difference. First operand 50502 states and 59122 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-03 02:49:38,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:49:38,136 INFO L93 Difference]: Finished difference Result 142552 states and 166204 transitions. [2021-11-03 02:49:38,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:49:38,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-03 02:49:38,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:49:38,330 INFO L225 Difference]: With dead ends: 142552 [2021-11-03 02:49:38,330 INFO L226 Difference]: Without dead ends: 92118 [2021-11-03 02:49:38,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:49:38,538 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12696 mSDsluCounter, 13280 mSDsCounter, 0 mSdLazyCounter, 26764 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19874.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12696 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.58ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23696.03ms IncrementalHoareTripleChecker+Time [2021-11-03 02:49:38,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12696 Valid, 0 Invalid, 26773 Unknown, 0 Unchecked, 42.58ms Time], IncrementalHoareTripleChecker [9 Valid, 26764 Invalid, 0 Unknown, 0 Unchecked, 23696.03ms Time] [2021-11-03 02:49:38,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92118 states. [2021-11-03 02:49:40,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92118 to 91680. [2021-11-03 02:49:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91680 states, 91614 states have (on average 1.1642434562403126) internal successors, (106661), 91679 states have internal predecessors, (106661), 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) [2021-11-03 02:49:40,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91680 states to 91680 states and 106661 transitions. [2021-11-03 02:49:40,425 INFO L78 Accepts]: Start accepts. Automaton has 91680 states and 106661 transitions. Word has length 51 [2021-11-03 02:49:40,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:49:40,426 INFO L470 AbstractCegarLoop]: Abstraction has 91680 states and 106661 transitions. [2021-11-03 02:49:40,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-03 02:49:40,426 INFO L276 IsEmpty]: Start isEmpty. Operand 91680 states and 106661 transitions. [2021-11-03 02:49:40,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 02:49:40,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:49:40,427 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-03 02:49:40,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 02:49:40,427 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-03 02:49:40,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:49:40,428 INFO L85 PathProgramCache]: Analyzing trace with hash 400041987, now seen corresponding path program 1 times [2021-11-03 02:49:40,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:49:40,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068482521] [2021-11-03 02:49:40,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:49:40,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:49:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:49:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:49:40,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:49:40,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068482521] [2021-11-03 02:49:40,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068482521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:49:40,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:49:40,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:49:40,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175194445] [2021-11-03 02:49:40,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:49:40,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:49:40,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:49:40,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:49:40,730 INFO L87 Difference]: Start difference. First operand 91680 states and 106661 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-03 02:50:10,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:50:10,595 INFO L93 Difference]: Finished difference Result 269219 states and 313338 transitions. [2021-11-03 02:50:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:50:10,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2021-11-03 02:50:10,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:50:11,005 INFO L225 Difference]: With dead ends: 269219 [2021-11-03 02:50:11,005 INFO L226 Difference]: Without dead ends: 177607 [2021-11-03 02:50:11,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:50:11,175 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13341 mSDsluCounter, 13423 mSDsCounter, 0 mSdLazyCounter, 29984 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21870.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13341 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.44ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25955.14ms IncrementalHoareTripleChecker+Time [2021-11-03 02:50:11,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13341 Valid, 0 Invalid, 29990 Unknown, 0 Unchecked, 44.44ms Time], IncrementalHoareTripleChecker [6 Valid, 29984 Invalid, 0 Unknown, 0 Unchecked, 25955.14ms Time] [2021-11-03 02:50:11,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177607 states. [2021-11-03 02:50:14,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177607 to 177283. [2021-11-03 02:50:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177283 states, 177217 states have (on average 1.1647076747716076) internal successors, (206406), 177282 states have internal predecessors, (206406), 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) [2021-11-03 02:50:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177283 states to 177283 states and 206406 transitions. [2021-11-03 02:50:15,251 INFO L78 Accepts]: Start accepts. Automaton has 177283 states and 206406 transitions. Word has length 59 [2021-11-03 02:50:15,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:50:15,251 INFO L470 AbstractCegarLoop]: Abstraction has 177283 states and 206406 transitions. [2021-11-03 02:50:15,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-03 02:50:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 177283 states and 206406 transitions. [2021-11-03 02:50:15,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 02:50:15,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:50:15,253 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-03 02:50:15,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 02:50:15,253 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-03 02:50:15,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:50:15,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1066114040, now seen corresponding path program 1 times [2021-11-03 02:50:15,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:50:15,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275756187] [2021-11-03 02:50:15,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:50:15,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:50:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:50:15,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:50:15,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:50:15,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275756187] [2021-11-03 02:50:15,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275756187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:50:15,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:50:15,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 02:50:15,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646142907] [2021-11-03 02:50:15,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:50:15,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:50:15,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:50:15,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:50:15,349 INFO L87 Difference]: Start difference. First operand 177283 states and 206406 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2021-11-03 02:50:50,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:50:50,093 INFO L93 Difference]: Finished difference Result 531611 states and 618950 transitions. [2021-11-03 02:50:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:50:50,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 83 [2021-11-03 02:50:50,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:50:51,158 INFO L225 Difference]: With dead ends: 531611 [2021-11-03 02:50:51,158 INFO L226 Difference]: Without dead ends: 354447 [2021-11-03 02:50:51,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.53ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:50:51,477 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13261 mSDsluCounter, 13207 mSDsCounter, 0 mSdLazyCounter, 37110 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23395.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13261 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 37263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.24ms SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 37110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27971.88ms IncrementalHoareTripleChecker+Time [2021-11-03 02:50:51,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13261 Valid, 0 Invalid, 37263 Unknown, 0 Unchecked, 49.24ms Time], IncrementalHoareTripleChecker [153 Valid, 37110 Invalid, 0 Unknown, 0 Unchecked, 27971.88ms Time] [2021-11-03 02:50:51,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354447 states. [2021-11-03 02:50:59,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354447 to 354227. [2021-11-03 02:50:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354227 states, 354161 states have (on average 1.1614774071679264) internal successors, (411350), 354226 states have internal predecessors, (411350), 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) [2021-11-03 02:51:01,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354227 states to 354227 states and 411350 transitions. [2021-11-03 02:51:01,012 INFO L78 Accepts]: Start accepts. Automaton has 354227 states and 411350 transitions. Word has length 83 [2021-11-03 02:51:01,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:51:01,014 INFO L470 AbstractCegarLoop]: Abstraction has 354227 states and 411350 transitions. [2021-11-03 02:51:01,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2021-11-03 02:51:01,014 INFO L276 IsEmpty]: Start isEmpty. Operand 354227 states and 411350 transitions. [2021-11-03 02:51:01,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 02:51:01,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:51:01,025 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-03 02:51:01,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 02:51:01,025 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 63 more)] === [2021-11-03 02:51:01,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:51:01,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1489760762, now seen corresponding path program 1 times [2021-11-03 02:51:01,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:51:01,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340582272] [2021-11-03 02:51:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:51:01,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:51:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:51:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:51:01,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:51:01,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340582272] [2021-11-03 02:51:01,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340582272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:51:01,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:51:01,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 02:51:01,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003707670] [2021-11-03 02:51:01,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:51:01,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:51:01,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:51:01,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:51:01,161 INFO L87 Difference]: Start difference. First operand 354227 states and 411350 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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)