./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-natsemi-natsemi.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-natsemi-natsemi.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 6081258d9228cc20a54c5db1ec40347e5dbacbb2bb40755a07881673d13b875b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 02:51:13,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 02:51:13,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 02:51:13,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 02:51:13,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 02:51:13,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 02:51:13,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 02:51:13,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 02:51:13,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 02:51:13,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 02:51:13,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 02:51:13,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 02:51:13,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 02:51:13,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 02:51:13,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 02:51:13,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 02:51:13,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 02:51:13,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 02:51:13,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 02:51:13,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 02:51:13,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 02:51:13,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 02:51:13,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 02:51:13,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 02:51:13,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 02:51:13,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 02:51:13,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 02:51:13,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 02:51:13,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 02:51:13,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 02:51:13,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 02:51:13,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 02:51:13,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 02:51:13,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 02:51:13,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 02:51:13,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 02:51:13,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 02:51:13,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 02:51:13,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 02:51:13,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 02:51:13,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 02:51:13,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 02:51:14,011 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 02:51:14,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 02:51:14,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 02:51:14,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 02:51:14,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 02:51:14,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 02:51:14,016 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 02:51:14,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 02:51:14,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 02:51:14,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 02:51:14,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 02:51:14,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 02:51:14,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 02:51:14,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 02:51:14,018 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 02:51:14,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 02:51:14,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 02:51:14,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 02:51:14,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 02:51:14,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 02:51:14,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 02:51:14,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 02:51:14,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 02:51:14,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 02:51:14,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 02:51:14,019 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 02:51:14,019 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 02:51:14,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 02:51:14,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 02:51:14,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6081258d9228cc20a54c5db1ec40347e5dbacbb2bb40755a07881673d13b875b [2021-11-03 02:51:14,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 02:51:14,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 02:51:14,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 02:51:14,271 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 02:51:14,271 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 02:51:14,273 INFO L432 ainManager$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-natsemi-natsemi.cil.i [2021-11-03 02:51:14,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/213a0f1f3/0cdbc0f40deb48fe8bd84db83ab5e0d3/FLAG93590aac3 [2021-11-03 02:51:14,991 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 02:51:14,991 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-natsemi-natsemi.cil.i [2021-11-03 02:51:15,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/213a0f1f3/0cdbc0f40deb48fe8bd84db83ab5e0d3/FLAG93590aac3 [2021-11-03 02:51:15,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/213a0f1f3/0cdbc0f40deb48fe8bd84db83ab5e0d3 [2021-11-03 02:51:15,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 02:51:15,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 02:51:15,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 02:51:15,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 02:51:15,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 02:51:15,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:51:15" (1/1) ... [2021-11-03 02:51:15,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e10580c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:15, skipping insertion in model container [2021-11-03 02:51:15,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:51:15" (1/1) ... [2021-11-03 02:51:15,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 02:51:15,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 02:51:18,231 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-natsemi-natsemi.cil.i[386207,386220] [2021-11-03 02:51:18,234 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-natsemi-natsemi.cil.i[386376,386389] [2021-11-03 02:51:18,238 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-natsemi-natsemi.cil.i[386543,386556] [2021-11-03 02:51:18,238 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-natsemi-natsemi.cil.i[386711,386724] [2021-11-03 02:51:18,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 02:51:18,317 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 02:51:18,583 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-natsemi-natsemi.cil.i[386207,386220] [2021-11-03 02:51:18,584 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-natsemi-natsemi.cil.i[386376,386389] [2021-11-03 02:51:18,584 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-natsemi-natsemi.cil.i[386543,386556] [2021-11-03 02:51:18,584 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-natsemi-natsemi.cil.i[386711,386724] [2021-11-03 02:51:18,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 02:51:18,762 INFO L208 MainTranslator]: Completed translation [2021-11-03 02:51:18,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:18 WrapperNode [2021-11-03 02:51:18,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 02:51:18,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 02:51:18,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 02:51:18,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 02:51:18,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:18" (1/1) ... [2021-11-03 02:51:18,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:18" (1/1) ... [2021-11-03 02:51:20,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 02:51:20,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 02:51:20,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 02:51:20,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 02:51:20,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:18" (1/1) ... [2021-11-03 02:51:20,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:18" (1/1) ... [2021-11-03 02:51:21,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:18" (1/1) ... [2021-11-03 02:51:21,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:18" (1/1) ... [2021-11-03 02:51:22,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:18" (1/1) ... [2021-11-03 02:51:22,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:18" (1/1) ... [2021-11-03 02:51:22,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:18" (1/1) ... [2021-11-03 02:51:22,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 02:51:22,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 02:51:22,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 02:51:22,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 02:51:22,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:18" (1/1) ... [2021-11-03 02:51:22,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 02:51:22,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 02:51:22,950 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 02:51:22,967 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 02:51:22,980 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-03 02:51:22,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 02:51:22,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-03 02:51:22,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-03 02:51:22,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 02:51:22,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 02:51:22,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 02:51:22,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 02:51:22,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 02:51:22,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 02:51:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 02:51:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 02:51:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 02:51:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 02:51:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 02:51:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 02:51:28,707 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-03 02:51:28,708 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-03 02:51:28,708 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-03 02:51:28,708 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-03 02:51:28,712 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 02:51:28,713 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-03 02:51:28,752 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 02:51:28,753 INFO L299 CfgBuilder]: Removed 20076 assume(true) statements. [2021-11-03 02:51:28,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:51:28 BoogieIcfgContainer [2021-11-03 02:51:28,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 02:51:28,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 02:51:28,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 02:51:28,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 02:51:28,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:51:15" (1/3) ... [2021-11-03 02:51:28,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef3115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:51:28, skipping insertion in model container [2021-11-03 02:51:28,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:18" (2/3) ... [2021-11-03 02:51:28,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef3115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:51:28, skipping insertion in model container [2021-11-03 02:51:28,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:51:28" (3/3) ... [2021-11-03 02:51:28,774 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-03 02:51:28,778 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 02:51:28,778 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 98 error locations. [2021-11-03 02:51:28,853 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 02:51:28,858 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 02:51:28,858 INFO L340 AbstractCegarLoop]: Starting to check reachability of 98 error locations. [2021-11-03 02:51:29,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 13942 states, 13844 states have (on average 1.2050707887893672) internal successors, (16683), 13941 states have internal predecessors, (16683), 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 02:51:29,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 02:51:29,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:51:29,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 02:51:29,110 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 02:51:29,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:51:29,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1902186889, now seen corresponding path program 1 times [2021-11-03 02:51:29,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:51:29,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830646845] [2021-11-03 02:51:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:51:29,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:51:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:51:29,621 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 02:51:29,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:51:29,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830646845] [2021-11-03 02:51:29,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830646845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:51:29,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:51:29,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:51:29,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87398290] [2021-11-03 02:51:29,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:51:29,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:51:29,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:51:29,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:51:29,670 INFO L87 Difference]: Start difference. First operand has 13942 states, 13844 states have (on average 1.2050707887893672) internal successors, (16683), 13941 states have internal predecessors, (16683), 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 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 02:52:00,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:52:00,953 INFO L93 Difference]: Finished difference Result 41308 states and 49389 transitions. [2021-11-03 02:52:00,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:52:00,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2021-11-03 02:52:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:52:01,077 INFO L225 Difference]: With dead ends: 41308 [2021-11-03 02:52:01,078 INFO L226 Difference]: Without dead ends: 27122 [2021-11-03 02:52:01,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:52:01,114 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 16148 mSDsluCounter, 16495 mSDsCounter, 0 mSdLazyCounter, 32626 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24910.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16148 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 32632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.90ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29825.11ms IncrementalHoareTripleChecker+Time [2021-11-03 02:52:01,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16148 Valid, 439 Invalid, 32632 Unknown, 0 Unchecked, 72.90ms Time], IncrementalHoareTripleChecker [6 Valid, 32626 Invalid, 0 Unknown, 0 Unchecked, 29825.11ms Time] [2021-11-03 02:52:01,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27122 states. [2021-11-03 02:52:01,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27122 to 26998. [2021-11-03 02:52:01,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26998 states, 26900 states have (on average 1.1825650557620817) internal successors, (31811), 26997 states have internal predecessors, (31811), 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 02:52:01,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26998 states to 26998 states and 31811 transitions. [2021-11-03 02:52:01,807 INFO L78 Accepts]: Start accepts. Automaton has 26998 states and 31811 transitions. Word has length 63 [2021-11-03 02:52:01,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:52:01,808 INFO L470 AbstractCegarLoop]: Abstraction has 26998 states and 31811 transitions. [2021-11-03 02:52:01,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 02:52:01,810 INFO L276 IsEmpty]: Start isEmpty. Operand 26998 states and 31811 transitions. [2021-11-03 02:52:01,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 02:52:01,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:52:01,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 02:52:01,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 02:52:01,819 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 02:52:01,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:52:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1989378126, now seen corresponding path program 1 times [2021-11-03 02:52:01,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:52:01,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630070612] [2021-11-03 02:52:01,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:52:01,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:52:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:52:02,011 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 02:52:02,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:52:02,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630070612] [2021-11-03 02:52:02,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630070612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:52:02,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:52:02,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:52:02,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006017837] [2021-11-03 02:52:02,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:52:02,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:52:02,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:52:02,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:52:02,016 INFO L87 Difference]: Start difference. First operand 26998 states and 31811 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 02:52:27,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:52:27,755 INFO L93 Difference]: Finished difference Result 52117 states and 61443 transitions. [2021-11-03 02:52:27,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:52:27,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2021-11-03 02:52:27,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:52:27,830 INFO L225 Difference]: With dead ends: 52117 [2021-11-03 02:52:27,831 INFO L226 Difference]: Without dead ends: 25243 [2021-11-03 02:52:28,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:52:28,050 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6967 mSDsluCounter, 15950 mSDsCounter, 0 mSdLazyCounter, 32113 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20716.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6967 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 32134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.11ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 32113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24557.92ms IncrementalHoareTripleChecker+Time [2021-11-03 02:52:28,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6967 Valid, 0 Invalid, 32134 Unknown, 0 Unchecked, 59.11ms Time], IncrementalHoareTripleChecker [21 Valid, 32113 Invalid, 0 Unknown, 0 Unchecked, 24557.92ms Time] [2021-11-03 02:52:28,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25243 states. [2021-11-03 02:52:28,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25243 to 25113. [2021-11-03 02:52:28,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25113 states, 25015 states have (on average 1.1849690185888466) internal successors, (29642), 25112 states have internal predecessors, (29642), 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 02:52:28,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25113 states to 25113 states and 29642 transitions. [2021-11-03 02:52:28,533 INFO L78 Accepts]: Start accepts. Automaton has 25113 states and 29642 transitions. Word has length 67 [2021-11-03 02:52:28,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:52:28,534 INFO L470 AbstractCegarLoop]: Abstraction has 25113 states and 29642 transitions. [2021-11-03 02:52:28,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 02:52:28,534 INFO L276 IsEmpty]: Start isEmpty. Operand 25113 states and 29642 transitions. [2021-11-03 02:52:28,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 02:52:28,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:52:28,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 02:52:28,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 02:52:28,536 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 02:52:28,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:52:28,536 INFO L85 PathProgramCache]: Analyzing trace with hash 485039376, now seen corresponding path program 1 times [2021-11-03 02:52:28,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:52:28,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525295917] [2021-11-03 02:52:28,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:52:28,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:52:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:52:28,650 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 02:52:28,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:52:28,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525295917] [2021-11-03 02:52:28,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525295917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:52:28,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:52:28,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:52:28,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943359942] [2021-11-03 02:52:28,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:52:28,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:52:28,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:52:28,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:52:28,652 INFO L87 Difference]: Start difference. First operand 25113 states and 29642 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 02:52:56,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:52:56,390 INFO L93 Difference]: Finished difference Result 57561 states and 67886 transitions. [2021-11-03 02:52:56,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:52:56,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2021-11-03 02:52:56,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:52:56,462 INFO L225 Difference]: With dead ends: 57561 [2021-11-03 02:52:56,463 INFO L226 Difference]: Without dead ends: 32572 [2021-11-03 02:52:56,508 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 [2021-11-03 02:52:56,509 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11265 mSDsluCounter, 16009 mSDsCounter, 0 mSdLazyCounter, 32198 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22452.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11265 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 32209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.06ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 32198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26589.79ms IncrementalHoareTripleChecker+Time [2021-11-03 02:52:56,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11265 Valid, 0 Invalid, 32209 Unknown, 0 Unchecked, 48.06ms Time], IncrementalHoareTripleChecker [11 Valid, 32198 Invalid, 0 Unknown, 0 Unchecked, 26589.79ms Time] [2021-11-03 02:52:56,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32572 states. [2021-11-03 02:52:56,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32572 to 31755. [2021-11-03 02:52:57,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31755 states, 31657 states have (on average 1.1840035379221026) internal successors, (37482), 31754 states have internal predecessors, (37482), 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 02:52:57,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31755 states to 31755 states and 37482 transitions. [2021-11-03 02:52:57,091 INFO L78 Accepts]: Start accepts. Automaton has 31755 states and 37482 transitions. Word has length 69 [2021-11-03 02:52:57,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:52:57,092 INFO L470 AbstractCegarLoop]: Abstraction has 31755 states and 37482 transitions. [2021-11-03 02:52:57,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 02:52:57,092 INFO L276 IsEmpty]: Start isEmpty. Operand 31755 states and 37482 transitions. [2021-11-03 02:52:57,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 02:52:57,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:52:57,094 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, 1, 1, 1, 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 02:52:57,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 02:52:57,095 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr90ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 02:52:57,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:52:57,095 INFO L85 PathProgramCache]: Analyzing trace with hash -860041770, now seen corresponding path program 1 times [2021-11-03 02:52:57,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:52:57,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213888689] [2021-11-03 02:52:57,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:52:57,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:52:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:52:57,264 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 02:52:57,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:52:57,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213888689] [2021-11-03 02:52:57,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213888689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:52:57,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:52:57,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:52:57,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390856432] [2021-11-03 02:52:57,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:52:57,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:52:57,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:52:57,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:52:57,268 INFO L87 Difference]: Start difference. First operand 31755 states and 37482 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 02:52:59,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:53:28,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:53:28,724 INFO L93 Difference]: Finished difference Result 84150 states and 99311 transitions. [2021-11-03 02:53:28,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:53:28,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2021-11-03 02:53:28,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:53:28,839 INFO L225 Difference]: With dead ends: 84150 [2021-11-03 02:53:28,839 INFO L226 Difference]: Without dead ends: 52519 [2021-11-03 02:53:28,884 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 [2021-11-03 02:53:28,887 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 14045 mSDsluCounter, 15119 mSDsCounter, 0 mSdLazyCounter, 31246 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25651.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14045 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.22ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 31246 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29946.21ms IncrementalHoareTripleChecker+Time [2021-11-03 02:53:28,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14045 Valid, 0 Invalid, 31260 Unknown, 0 Unchecked, 50.22ms Time], IncrementalHoareTripleChecker [13 Valid, 31246 Invalid, 1 Unknown, 0 Unchecked, 29946.21ms Time] [2021-11-03 02:53:28,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52519 states. [2021-11-03 02:53:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52519 to 52153. [2021-11-03 02:53:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52153 states, 52055 states have (on average 1.1835942752857556) internal successors, (61612), 52152 states have internal predecessors, (61612), 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 02:53:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52153 states to 52153 states and 61612 transitions. [2021-11-03 02:53:29,871 INFO L78 Accepts]: Start accepts. Automaton has 52153 states and 61612 transitions. Word has length 69 [2021-11-03 02:53:29,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:53:29,872 INFO L470 AbstractCegarLoop]: Abstraction has 52153 states and 61612 transitions. [2021-11-03 02:53:29,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 02:53:29,872 INFO L276 IsEmpty]: Start isEmpty. Operand 52153 states and 61612 transitions. [2021-11-03 02:53:29,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 02:53:29,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:53:29,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 02:53:29,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 02:53:29,873 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr88ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 02:53:29,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:53:29,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1102072347, now seen corresponding path program 1 times [2021-11-03 02:53:29,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:53:29,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603096612] [2021-11-03 02:53:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:53:29,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:53:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:53:29,995 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 02:53:29,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:53:29,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603096612] [2021-11-03 02:53:29,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603096612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:53:29,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:53:29,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:53:29,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693822433] [2021-11-03 02:53:29,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:53:29,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:53:29,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:53:29,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:53:29,997 INFO L87 Difference]: Start difference. First operand 52153 states and 61612 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 02:54:02,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:54:02,326 INFO L93 Difference]: Finished difference Result 155565 states and 183769 transitions. [2021-11-03 02:54:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:54:02,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2021-11-03 02:54:02,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:54:02,578 INFO L225 Difference]: With dead ends: 155565 [2021-11-03 02:54:02,578 INFO L226 Difference]: Without dead ends: 103536 [2021-11-03 02:54:02,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:54:02,684 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15880 mSDsluCounter, 16077 mSDsCounter, 0 mSdLazyCounter, 32208 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25532.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15880 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 32215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.01ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30101.78ms IncrementalHoareTripleChecker+Time [2021-11-03 02:54:02,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15880 Valid, 0 Invalid, 32215 Unknown, 0 Unchecked, 51.01ms Time], IncrementalHoareTripleChecker [7 Valid, 32208 Invalid, 0 Unknown, 0 Unchecked, 30101.78ms Time] [2021-11-03 02:54:02,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103536 states. [2021-11-03 02:54:04,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103536 to 103210. [2021-11-03 02:54:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103210 states, 103112 states have (on average 1.1830630770424393) internal successors, (121988), 103209 states have internal predecessors, (121988), 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 02:54:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103210 states to 103210 states and 121988 transitions. [2021-11-03 02:54:05,299 INFO L78 Accepts]: Start accepts. Automaton has 103210 states and 121988 transitions. Word has length 76 [2021-11-03 02:54:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:54:05,299 INFO L470 AbstractCegarLoop]: Abstraction has 103210 states and 121988 transitions. [2021-11-03 02:54:05,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 02:54:05,300 INFO L276 IsEmpty]: Start isEmpty. Operand 103210 states and 121988 transitions. [2021-11-03 02:54:05,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 02:54:05,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:54:05,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 02:54:05,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 02:54:05,302 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 02:54:05,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:54:05,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1795054265, now seen corresponding path program 1 times [2021-11-03 02:54:05,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:54:05,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565857805] [2021-11-03 02:54:05,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:54:05,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:54:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:54:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 02:54:05,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:54:05,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565857805] [2021-11-03 02:54:05,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565857805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:54:05,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:54:05,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:54:05,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905351884] [2021-11-03 02:54:05,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:54:05,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:54:05,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:54:05,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:54:05,475 INFO L87 Difference]: Start difference. First operand 103210 states and 121988 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 02:54:39,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:54:39,049 INFO L93 Difference]: Finished difference Result 308560 states and 364779 transitions. [2021-11-03 02:54:39,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:54:39,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 92 [2021-11-03 02:54:39,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:54:39,583 INFO L225 Difference]: With dead ends: 308560 [2021-11-03 02:54:39,583 INFO L226 Difference]: Without dead ends: 205570 [2021-11-03 02:54:39,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:54:39,764 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15841 mSDsluCounter, 16008 mSDsCounter, 0 mSdLazyCounter, 32202 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24668.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15841 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 32210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.13ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29245.59ms IncrementalHoareTripleChecker+Time [2021-11-03 02:54:39,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15841 Valid, 0 Invalid, 32210 Unknown, 0 Unchecked, 46.13ms Time], IncrementalHoareTripleChecker [8 Valid, 32202 Invalid, 0 Unknown, 0 Unchecked, 29245.59ms Time] [2021-11-03 02:54:40,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205570 states. [2021-11-03 02:54:43,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205570 to 205446. [2021-11-03 02:54:44,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205446 states, 205348 states have (on average 1.1829674503769212) internal successors, (242920), 205445 states have internal predecessors, (242920), 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 02:54:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205446 states to 205446 states and 242920 transitions. [2021-11-03 02:54:44,885 INFO L78 Accepts]: Start accepts. Automaton has 205446 states and 242920 transitions. Word has length 92 [2021-11-03 02:54:44,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:54:44,886 INFO L470 AbstractCegarLoop]: Abstraction has 205446 states and 242920 transitions. [2021-11-03 02:54:44,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 02:54:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 205446 states and 242920 transitions. [2021-11-03 02:54:44,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 02:54:44,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:54:44,887 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 02:54:44,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 02:54:44,887 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 02:54:44,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:54:44,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1513883016, now seen corresponding path program 1 times [2021-11-03 02:54:44,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:54:44,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875613552] [2021-11-03 02:54:44,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:54:44,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:54:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:54:45,032 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 02:54:45,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:54:45,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875613552] [2021-11-03 02:54:45,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875613552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:54:45,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:54:45,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:54:45,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969621865] [2021-11-03 02:54:45,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 02:54:45,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:54:45,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 02:54:45,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:54:45,035 INFO L87 Difference]: Start difference. First operand 205446 states and 242920 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 02:54:47,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 02:55:23,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 02:55:23,121 INFO L93 Difference]: Finished difference Result 513000 states and 606515 transitions. [2021-11-03 02:55:23,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 02:55:23,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2021-11-03 02:55:23,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 02:55:23,898 INFO L225 Difference]: With dead ends: 513000 [2021-11-03 02:55:23,898 INFO L226 Difference]: Without dead ends: 307774 [2021-11-03 02:55:24,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 02:55:24,240 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 15760 mSDsluCounter, 16080 mSDsCounter, 0 mSdLazyCounter, 32389 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26933.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15760 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 32391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.63ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32389 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31549.46ms IncrementalHoareTripleChecker+Time [2021-11-03 02:55:24,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15760 Valid, 0 Invalid, 32391 Unknown, 0 Unchecked, 46.63ms Time], IncrementalHoareTripleChecker [1 Valid, 32389 Invalid, 1 Unknown, 0 Unchecked, 31549.46ms Time] [2021-11-03 02:55:24,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307774 states. [2021-11-03 02:55:31,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307774 to 307650. [2021-11-03 02:55:31,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307650 states, 307552 states have (on average 1.182798356050359) internal successors, (363772), 307649 states have internal predecessors, (363772), 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 02:55:32,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307650 states to 307650 states and 363772 transitions. [2021-11-03 02:55:32,430 INFO L78 Accepts]: Start accepts. Automaton has 307650 states and 363772 transitions. Word has length 93 [2021-11-03 02:55:32,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 02:55:32,430 INFO L470 AbstractCegarLoop]: Abstraction has 307650 states and 363772 transitions. [2021-11-03 02:55:32,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 02:55:32,430 INFO L276 IsEmpty]: Start isEmpty. Operand 307650 states and 363772 transitions. [2021-11-03 02:55:32,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 02:55:32,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 02:55:32,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 02:55:32,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 02:55:32,432 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 95 more)] === [2021-11-03 02:55:32,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 02:55:32,432 INFO L85 PathProgramCache]: Analyzing trace with hash 492814662, now seen corresponding path program 1 times [2021-11-03 02:55:32,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 02:55:32,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554047341] [2021-11-03 02:55:32,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 02:55:32,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 02:55:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 02:55:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 02:55:32,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 02:55:32,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554047341] [2021-11-03 02:55:32,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554047341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 02:55:32,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 02:55:32,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 02:55:32,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659231312] [2021-11-03 02:55:32,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 02:55:32,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 02:55:32,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 02:55:32,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 02:55:32,648 INFO L87 Difference]: Start difference. First operand 307650 states and 363772 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 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)