./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.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 82e959473290e80a4f353bcd3c2747bafa4ce239975e14e29f8e5bf5eff4b01b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 20:51:00,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 20:51:00,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 20:51:00,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 20:51:00,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 20:51:00,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 20:51:00,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 20:51:00,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 20:51:00,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 20:51:00,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 20:51:00,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 20:51:00,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 20:51:00,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 20:51:00,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 20:51:00,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 20:51:00,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 20:51:00,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 20:51:00,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 20:51:00,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 20:51:00,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 20:51:00,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 20:51:00,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 20:51:00,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 20:51:00,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 20:51:00,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 20:51:00,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 20:51:00,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 20:51:00,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 20:51:00,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 20:51:00,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 20:51:00,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 20:51:00,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 20:51:00,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 20:51:00,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 20:51:00,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 20:51:00,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 20:51:00,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 20:51:00,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 20:51:00,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 20:51:00,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 20:51:00,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 20:51:00,916 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 20:51:00,943 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 20:51:00,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 20:51:00,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 20:51:00,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 20:51:00,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 20:51:00,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 20:51:00,945 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 20:51:00,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 20:51:00,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 20:51:00,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 20:51:00,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 20:51:00,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 20:51:00,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 20:51:00,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 20:51:00,946 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 20:51:00,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 20:51:00,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 20:51:00,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 20:51:00,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 20:51:00,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:51:00,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 20:51:00,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 20:51:00,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 20:51:00,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 20:51:00,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 20:51:00,948 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 20:51:00,948 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 20:51:00,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 20:51:00,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 20:51:00,948 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82e959473290e80a4f353bcd3c2747bafa4ce239975e14e29f8e5bf5eff4b01b [2021-11-05 20:51:01,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 20:51:01,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 20:51:01,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 20:51:01,233 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 20:51:01,234 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 20:51:01,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2021-11-05 20:51:01,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a6ff649/25721a587ee94886a7de62ec151ee165/FLAG87032d399 [2021-11-05 20:51:01,937 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 20:51:01,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2021-11-05 20:51:01,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a6ff649/25721a587ee94886a7de62ec151ee165/FLAG87032d399 [2021-11-05 20:51:02,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a6ff649/25721a587ee94886a7de62ec151ee165 [2021-11-05 20:51:02,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 20:51:02,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 20:51:02,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 20:51:02,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 20:51:02,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 20:51:02,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:51:02" (1/1) ... [2021-11-05 20:51:02,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109fbced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:51:02, skipping insertion in model container [2021-11-05 20:51:02,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:51:02" (1/1) ... [2021-11-05 20:51:02,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 20:51:02,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 20:51:04,130 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343367,343380] [2021-11-05 20:51:04,133 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343536,343549] [2021-11-05 20:51:04,133 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343703,343716] [2021-11-05 20:51:04,133 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343871,343884] [2021-11-05 20:51:04,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:51:04,184 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 20:51:04,426 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343367,343380] [2021-11-05 20:51:04,427 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343536,343549] [2021-11-05 20:51:04,427 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343703,343716] [2021-11-05 20:51:04,427 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343871,343884] [2021-11-05 20:51:04,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:51:04,553 INFO L208 MainTranslator]: Completed translation [2021-11-05 20:51:04,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:51:04 WrapperNode [2021-11-05 20:51:04,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 20:51:04,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 20:51:04,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 20:51:04,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 20:51:04,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:51:04" (1/1) ... [2021-11-05 20:51:04,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:51:04" (1/1) ... [2021-11-05 20:51:05,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 20:51:05,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 20:51:05,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 20:51:05,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 20:51:05,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:51:04" (1/1) ... [2021-11-05 20:51:05,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:51:04" (1/1) ... [2021-11-05 20:51:05,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:51:04" (1/1) ... [2021-11-05 20:51:05,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:51:04" (1/1) ... [2021-11-05 20:51:06,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:51:04" (1/1) ... [2021-11-05 20:51:06,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:51:04" (1/1) ... [2021-11-05 20:51:06,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:51:04" (1/1) ... [2021-11-05 20:51:06,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 20:51:06,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 20:51:06,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 20:51:06,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 20:51:06,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:51:04" (1/1) ... [2021-11-05 20:51:06,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:51:06,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 20:51:06,533 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) [2021-11-05 20:51:06,584 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 [2021-11-05 20:51:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 20:51:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 20:51:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 20:51:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 20:51:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 20:51:06,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 20:51:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 20:51:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 20:51:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 20:51:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 20:51:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 20:51:15,647 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-05 20:51:15,648 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-05 20:51:15,649 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-05 20:51:15,649 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-05 20:51:15,650 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 20:51:15,650 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-05 20:51:15,684 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 20:51:15,685 INFO L299 CfgBuilder]: Removed 7996 assume(true) statements. [2021-11-05 20:51:15,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:51:15 BoogieIcfgContainer [2021-11-05 20:51:15,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 20:51:15,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 20:51:15,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 20:51:15,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 20:51:15,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 08:51:02" (1/3) ... [2021-11-05 20:51:15,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c3de41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:51:15, skipping insertion in model container [2021-11-05 20:51:15,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:51:04" (2/3) ... [2021-11-05 20:51:15,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c3de41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:51:15, skipping insertion in model container [2021-11-05 20:51:15,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:51:15" (3/3) ... [2021-11-05 20:51:15,698 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2021-11-05 20:51:15,701 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 20:51:15,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 53 error locations. [2021-11-05 20:51:15,760 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 20:51:15,768 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 [2021-11-05 20:51:15,768 INFO L340 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2021-11-05 20:51:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 6306 states, 6253 states have (on average 1.2653126499280345) internal successors, (7912), 6305 states have internal predecessors, (7912), 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) [2021-11-05 20:51:15,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-05 20:51:15,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:51:15,856 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] [2021-11-05 20:51:15,856 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-05 20:51:15,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:51:15,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2134408722, now seen corresponding path program 1 times [2021-11-05 20:51:15,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:51:15,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090298292] [2021-11-05 20:51:15,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:51:15,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:51:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:51:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:51:16,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:51:16,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090298292] [2021-11-05 20:51:16,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090298292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:51:16,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:51:16,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:51:16,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862598242] [2021-11-05 20:51:16,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:51:16,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:51:16,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:51:16,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:51:16,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:51:16,354 INFO L87 Difference]: Start difference. First operand has 6306 states, 6253 states have (on average 1.2653126499280345) internal successors, (7912), 6305 states have internal predecessors, (7912), 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 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-05 20:51:17,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:51:17,902 INFO L93 Difference]: Finished difference Result 18214 states and 22810 transitions. [2021-11-05 20:51:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:51:17,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2021-11-05 20:51:17,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:51:17,989 INFO L225 Difference]: With dead ends: 18214 [2021-11-05 20:51:18,003 INFO L226 Difference]: Without dead ends: 11752 [2021-11-05 20:51:18,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.53ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:51:18,034 INFO L933 BasicCegarLoop]: 7803 mSDtfsCounter, 7325 mSDsluCounter, 7502 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1005.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7325 SdHoareTripleChecker+Valid, 15305 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.56ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1081.78ms IncrementalHoareTripleChecker+Time [2021-11-05 20:51:18,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7325 Valid, 15305 Invalid, 44 Unknown, 0 Unchecked, 27.56ms Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 1081.78ms Time] [2021-11-05 20:51:18,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11752 states. [2021-11-05 20:51:18,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11752 to 11472. [2021-11-05 20:51:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11472 states, 11419 states have (on average 1.2307557579472808) internal successors, (14054), 11471 states have internal predecessors, (14054), 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) [2021-11-05 20:51:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11472 states to 11472 states and 14054 transitions. [2021-11-05 20:51:18,326 INFO L78 Accepts]: Start accepts. Automaton has 11472 states and 14054 transitions. Word has length 49 [2021-11-05 20:51:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:51:18,327 INFO L470 AbstractCegarLoop]: Abstraction has 11472 states and 14054 transitions. [2021-11-05 20:51:18,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-05 20:51:18,327 INFO L276 IsEmpty]: Start isEmpty. Operand 11472 states and 14054 transitions. [2021-11-05 20:51:18,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 20:51:18,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:51:18,329 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] [2021-11-05 20:51:18,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 20:51:18,330 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-05 20:51:18,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:51:18,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1502773357, now seen corresponding path program 1 times [2021-11-05 20:51:18,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:51:18,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537616437] [2021-11-05 20:51:18,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:51:18,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:51:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:51:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:51:18,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:51:18,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537616437] [2021-11-05 20:51:18,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537616437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:51:18,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:51:18,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:51:18,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136068007] [2021-11-05 20:51:18,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:51:18,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:51:18,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:51:18,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:51:18,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:51:18,476 INFO L87 Difference]: Start difference. First operand 11472 states and 14054 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) [2021-11-05 20:51:19,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:51:19,749 INFO L93 Difference]: Finished difference Result 34002 states and 41723 transitions. [2021-11-05 20:51:19,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:51:19,750 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 [2021-11-05 20:51:19,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:51:19,842 INFO L225 Difference]: With dead ends: 34002 [2021-11-05 20:51:19,843 INFO L226 Difference]: Without dead ends: 22622 [2021-11-05 20:51:19,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:51:19,878 INFO L933 BasicCegarLoop]: 7502 mSDtfsCounter, 7226 mSDsluCounter, 7465 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 777.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7226 SdHoareTripleChecker+Valid, 14967 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.53ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 844.24ms IncrementalHoareTripleChecker+Time [2021-11-05 20:51:19,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7226 Valid, 14967 Invalid, 34 Unknown, 0 Unchecked, 18.53ms Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 844.24ms Time] [2021-11-05 20:51:19,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22622 states. [2021-11-05 20:51:20,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22622 to 22588. [2021-11-05 20:51:20,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22588 states, 22535 states have (on average 1.231107166629687) internal successors, (27743), 22587 states have internal predecessors, (27743), 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) [2021-11-05 20:51:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22588 states to 22588 states and 27743 transitions. [2021-11-05 20:51:20,610 INFO L78 Accepts]: Start accepts. Automaton has 22588 states and 27743 transitions. Word has length 51 [2021-11-05 20:51:20,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:51:20,611 INFO L470 AbstractCegarLoop]: Abstraction has 22588 states and 27743 transitions. [2021-11-05 20:51:20,612 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) [2021-11-05 20:51:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 22588 states and 27743 transitions. [2021-11-05 20:51:20,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 20:51:20,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:51:20,623 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] [2021-11-05 20:51:20,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 20:51:20,623 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-05 20:51:20,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:51:20,624 INFO L85 PathProgramCache]: Analyzing trace with hash -237173952, now seen corresponding path program 1 times [2021-11-05 20:51:20,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:51:20,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714712597] [2021-11-05 20:51:20,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:51:20,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:51:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:51:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:51:20,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:51:20,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714712597] [2021-11-05 20:51:20,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714712597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:51:20,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:51:20,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:51:20,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750824149] [2021-11-05 20:51:20,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:51:20,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:51:20,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:51:20,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:51:20,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:51:20,754 INFO L87 Difference]: Start difference. First operand 22588 states and 27743 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-05 20:51:22,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:51:23,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:51:23,160 INFO L93 Difference]: Finished difference Result 63944 states and 78446 transitions. [2021-11-05 20:51:23,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:51:23,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2021-11-05 20:51:23,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:51:23,246 INFO L225 Difference]: With dead ends: 63944 [2021-11-05 20:51:23,246 INFO L226 Difference]: Without dead ends: 41448 [2021-11-05 20:51:23,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:51:23,301 INFO L933 BasicCegarLoop]: 7500 mSDtfsCounter, 6294 mSDsluCounter, 7321 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1602.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6294 SdHoareTripleChecker+Valid, 14821 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.03ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1716.46ms IncrementalHoareTripleChecker+Time [2021-11-05 20:51:23,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6294 Valid, 14821 Invalid, 89 Unknown, 0 Unchecked, 15.03ms Time], IncrementalHoareTripleChecker [9 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 1716.46ms Time] [2021-11-05 20:51:23,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41448 states. [2021-11-05 20:51:24,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41448 to 40956. [2021-11-05 20:51:24,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40956 states, 40903 states have (on average 1.228247316822727) internal successors, (50239), 40955 states have internal predecessors, (50239), 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) [2021-11-05 20:51:24,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40956 states to 40956 states and 50239 transitions. [2021-11-05 20:51:24,324 INFO L78 Accepts]: Start accepts. Automaton has 40956 states and 50239 transitions. Word has length 55 [2021-11-05 20:51:24,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:51:24,324 INFO L470 AbstractCegarLoop]: Abstraction has 40956 states and 50239 transitions. [2021-11-05 20:51:24,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-05 20:51:24,325 INFO L276 IsEmpty]: Start isEmpty. Operand 40956 states and 50239 transitions. [2021-11-05 20:51:24,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-05 20:51:24,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:51:24,326 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] [2021-11-05 20:51:24,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 20:51:24,326 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-05 20:51:24,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:51:24,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1307803746, now seen corresponding path program 1 times [2021-11-05 20:51:24,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:51:24,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407879619] [2021-11-05 20:51:24,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:51:24,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:51:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:51:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:51:24,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:51:24,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407879619] [2021-11-05 20:51:24,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407879619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:51:24,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:51:24,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 20:51:24,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045188535] [2021-11-05 20:51:24,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:51:24,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 20:51:24,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:51:24,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 20:51:24,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-05 20:51:24,474 INFO L87 Difference]: Start difference. First operand 40956 states and 50239 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2021-11-05 20:51:25,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:51:27,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:51:27,173 INFO L93 Difference]: Finished difference Result 76697 states and 94095 transitions. [2021-11-05 20:51:27,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 20:51:27,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 56 [2021-11-05 20:51:27,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:51:27,248 INFO L225 Difference]: With dead ends: 76697 [2021-11-05 20:51:27,248 INFO L226 Difference]: Without dead ends: 35833 [2021-11-05 20:51:27,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.86ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-05 20:51:27,309 INFO L933 BasicCegarLoop]: 8879 mSDtfsCounter, 26363 mSDsluCounter, 11295 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1451.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26363 SdHoareTripleChecker+Valid, 20174 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.17ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1587.31ms IncrementalHoareTripleChecker+Time [2021-11-05 20:51:27,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26363 Valid, 20174 Invalid, 257 Unknown, 0 Unchecked, 47.17ms Time], IncrementalHoareTripleChecker [96 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 1587.31ms Time] [2021-11-05 20:51:27,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35833 states. [2021-11-05 20:51:27,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35833 to 35617. [2021-11-05 20:51:28,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35617 states, 35564 states have (on average 1.2284051287819142) internal successors, (43687), 35616 states have internal predecessors, (43687), 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) [2021-11-05 20:51:28,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35617 states to 35617 states and 43687 transitions. [2021-11-05 20:51:28,091 INFO L78 Accepts]: Start accepts. Automaton has 35617 states and 43687 transitions. Word has length 56 [2021-11-05 20:51:28,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:51:28,092 INFO L470 AbstractCegarLoop]: Abstraction has 35617 states and 43687 transitions. [2021-11-05 20:51:28,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2021-11-05 20:51:28,093 INFO L276 IsEmpty]: Start isEmpty. Operand 35617 states and 43687 transitions. [2021-11-05 20:51:28,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-05 20:51:28,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:51:28,095 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 20:51:28,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 20:51:28,095 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-05 20:51:28,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:51:28,096 INFO L85 PathProgramCache]: Analyzing trace with hash 823876995, now seen corresponding path program 1 times [2021-11-05 20:51:28,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:51:28,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058906234] [2021-11-05 20:51:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:51:28,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:51:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:51:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:51:28,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:51:28,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058906234] [2021-11-05 20:51:28,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058906234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:51:28,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:51:28,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:51:28,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516580542] [2021-11-05 20:51:28,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:51:28,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:51:28,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:51:28,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:51:28,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:51:28,214 INFO L87 Difference]: Start difference. First operand 35617 states and 43687 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-05 20:51:30,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:51:30,604 INFO L93 Difference]: Finished difference Result 103811 states and 127496 transitions. [2021-11-05 20:51:30,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:51:30,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2021-11-05 20:51:30,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:51:30,741 INFO L225 Difference]: With dead ends: 103811 [2021-11-05 20:51:30,741 INFO L226 Difference]: Without dead ends: 69439 [2021-11-05 20:51:30,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:51:30,816 INFO L933 BasicCegarLoop]: 7500 mSDtfsCounter, 7281 mSDsluCounter, 7412 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 915.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7281 SdHoareTripleChecker+Valid, 14912 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.90ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 982.89ms IncrementalHoareTripleChecker+Time [2021-11-05 20:51:30,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7281 Valid, 14912 Invalid, 34 Unknown, 0 Unchecked, 11.90ms Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 982.89ms Time] [2021-11-05 20:51:30,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69439 states. [2021-11-05 20:51:32,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69439 to 69405. [2021-11-05 20:51:32,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69405 states, 69352 states have (on average 1.2290200715192063) internal successors, (85235), 69404 states have internal predecessors, (85235), 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) [2021-11-05 20:51:32,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69405 states to 69405 states and 85235 transitions. [2021-11-05 20:51:32,541 INFO L78 Accepts]: Start accepts. Automaton has 69405 states and 85235 transitions. Word has length 80 [2021-11-05 20:51:32,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:51:32,542 INFO L470 AbstractCegarLoop]: Abstraction has 69405 states and 85235 transitions. [2021-11-05 20:51:32,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-05 20:51:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 69405 states and 85235 transitions. [2021-11-05 20:51:32,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 20:51:32,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:51:32,543 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] [2021-11-05 20:51:32,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 20:51:32,544 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-05 20:51:32,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:51:32,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1472158610, now seen corresponding path program 1 times [2021-11-05 20:51:32,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:51:32,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562696450] [2021-11-05 20:51:32,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:51:32,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:51:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:51:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:51:32,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:51:32,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562696450] [2021-11-05 20:51:32,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562696450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:51:32,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:51:32,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:51:32,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735917986] [2021-11-05 20:51:32,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:51:32,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:51:32,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:51:32,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:51:32,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:51:32,645 INFO L87 Difference]: Start difference. First operand 69405 states and 85235 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-05 20:51:33,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:51:36,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:51:36,116 INFO L93 Difference]: Finished difference Result 171363 states and 210496 transitions. [2021-11-05 20:51:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:51:36,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2021-11-05 20:51:36,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:51:36,601 INFO L225 Difference]: With dead ends: 171363 [2021-11-05 20:51:36,601 INFO L226 Difference]: Without dead ends: 103203 [2021-11-05 20:51:36,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:51:36,714 INFO L933 BasicCegarLoop]: 8889 mSDtfsCounter, 7200 mSDsluCounter, 7484 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1302.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7200 SdHoareTripleChecker+Valid, 16373 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.19ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1379.71ms IncrementalHoareTripleChecker+Time [2021-11-05 20:51:36,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7200 Valid, 16373 Invalid, 26 Unknown, 0 Unchecked, 12.19ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 1379.71ms Time] [2021-11-05 20:51:36,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103203 states. [2021-11-05 20:51:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103203 to 103169. [2021-11-05 20:51:39,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103169 states, 103116 states have (on average 1.228936343535436) internal successors, (126723), 103168 states have internal predecessors, (126723), 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) [2021-11-05 20:51:39,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103169 states to 103169 states and 126723 transitions. [2021-11-05 20:51:39,496 INFO L78 Accepts]: Start accepts. Automaton has 103169 states and 126723 transitions. Word has length 81 [2021-11-05 20:51:39,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:51:39,497 INFO L470 AbstractCegarLoop]: Abstraction has 103169 states and 126723 transitions. [2021-11-05 20:51:39,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2021-11-05 20:51:39,498 INFO L276 IsEmpty]: Start isEmpty. Operand 103169 states and 126723 transitions. [2021-11-05 20:51:39,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-05 20:51:39,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:51:39,504 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] [2021-11-05 20:51:39,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 20:51:39,505 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-05 20:51:39,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:51:39,505 INFO L85 PathProgramCache]: Analyzing trace with hash 451090256, now seen corresponding path program 1 times [2021-11-05 20:51:39,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:51:39,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150127733] [2021-11-05 20:51:39,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:51:39,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:51:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:51:39,709 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 20:51:39,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:51:39,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150127733] [2021-11-05 20:51:39,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150127733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:51:39,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:51:39,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:51:39,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514121537] [2021-11-05 20:51:39,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:51:39,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 20:51:39,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:51:39,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 20:51:39,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 20:51:39,713 INFO L87 Difference]: Start difference. First operand 103169 states and 126723 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-11-05 20:51:41,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:51:41,942 INFO L93 Difference]: Finished difference Result 103169 states and 126723 transitions. [2021-11-05 20:51:41,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 20:51:41,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 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 81 [2021-11-05 20:51:41,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:51:42,147 INFO L225 Difference]: With dead ends: 103169 [2021-11-05 20:51:42,147 INFO L226 Difference]: Without dead ends: 103163 [2021-11-05 20:51:42,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.83ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 20:51:42,181 INFO L933 BasicCegarLoop]: 7498 mSDtfsCounter, 7438 mSDsluCounter, 7402 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7438 SdHoareTripleChecker+Valid, 14900 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.80ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 120.89ms IncrementalHoareTripleChecker+Time [2021-11-05 20:51:42,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7438 Valid, 14900 Invalid, 106 Unknown, 0 Unchecked, 19.80ms Time], IncrementalHoareTripleChecker [34 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 120.89ms Time] [2021-11-05 20:51:42,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103163 states. [2021-11-05 20:51:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103163 to 103163. [2021-11-05 20:51:44,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103163 states, 103113 states have (on average 1.2289139099822526) internal successors, (126717), 103162 states have internal predecessors, (126717), 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) [2021-11-05 20:51:45,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103163 states to 103163 states and 126717 transitions. [2021-11-05 20:51:45,096 INFO L78 Accepts]: Start accepts. Automaton has 103163 states and 126717 transitions. Word has length 81 [2021-11-05 20:51:45,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:51:45,096 INFO L470 AbstractCegarLoop]: Abstraction has 103163 states and 126717 transitions. [2021-11-05 20:51:45,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-11-05 20:51:45,097 INFO L276 IsEmpty]: Start isEmpty. Operand 103163 states and 126717 transitions. [2021-11-05 20:51:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-05 20:51:45,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:51:45,098 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] [2021-11-05 20:51:45,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 20:51:45,098 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-05 20:51:45,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:51:45,099 INFO L85 PathProgramCache]: Analyzing trace with hash -293812333, now seen corresponding path program 1 times [2021-11-05 20:51:45,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:51:45,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72754161] [2021-11-05 20:51:45,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:51:45,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:51:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:51:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 20:51:45,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:51:45,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72754161] [2021-11-05 20:51:45,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72754161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:51:45,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:51:45,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:51:45,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015569400] [2021-11-05 20:51:45,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:51:45,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 20:51:45,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:51:45,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 20:51:45,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 20:51:45,220 INFO L87 Difference]: Start difference. First operand 103163 states and 126717 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-05 20:51:47,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:51:47,502 INFO L93 Difference]: Finished difference Result 103163 states and 126717 transitions. [2021-11-05 20:51:47,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 20:51:47,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 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 [2021-11-05 20:51:47,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:51:47,701 INFO L225 Difference]: With dead ends: 103163 [2021-11-05 20:51:47,702 INFO L226 Difference]: Without dead ends: 103157 [2021-11-05 20:51:47,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.69ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 20:51:47,739 INFO L933 BasicCegarLoop]: 7492 mSDtfsCounter, 7427 mSDsluCounter, 7399 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7427 SdHoareTripleChecker+Valid, 14891 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.81ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.95ms IncrementalHoareTripleChecker+Time [2021-11-05 20:51:47,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7427 Valid, 14891 Invalid, 106 Unknown, 0 Unchecked, 14.81ms Time], IncrementalHoareTripleChecker [37 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 61.95ms Time] [2021-11-05 20:51:47,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103157 states.