./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 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-dev-173e394 [2021-11-06 20:44:56,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:44:56,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:44:56,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:44:56,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:44:56,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:44:56,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:44:56,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:44:56,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:44:56,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:44:56,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:44:56,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:44:56,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:44:56,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:44:56,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:44:56,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:44:56,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:44:56,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:44:56,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:44:56,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:44:56,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:44:56,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:44:56,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:44:56,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:44:56,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:44:56,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:44:56,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:44:56,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:44:56,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:44:56,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:44:56,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:44:56,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:44:56,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:44:56,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:44:56,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:44:56,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:44:56,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:44:56,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:44:56,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:44:56,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:44:56,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:44:56,825 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:44:56,843 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:44:56,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:44:56,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:44:56,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:44:56,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:44:56,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:44:56,845 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:44:56,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:44:56,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:44:56,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:44:56,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:44:56,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:44:56,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:44:56,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:44:56,847 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:44:56,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:44:56,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:44:56,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:44:56,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:44:56,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:44:56,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:44:56,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:44:56,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:44:56,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:44:56,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:44:56,848 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:44:56,848 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:44:56,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:44:56,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:44:56,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6081258d9228cc20a54c5db1ec40347e5dbacbb2bb40755a07881673d13b875b [2021-11-06 20:44:57,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:44:57,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:44:57,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:44:57,055 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:44:57,056 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:44:57,056 INFO L432 ainManager$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 [2021-11-06 20:44:57,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b259dde7/4dc4afd04a624ba5af5a99adca0c9c90/FLAGf9a4ef2a6 [2021-11-06 20:44:57,840 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:44:57,841 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 [2021-11-06 20:44:57,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b259dde7/4dc4afd04a624ba5af5a99adca0c9c90/FLAGf9a4ef2a6 [2021-11-06 20:44:58,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b259dde7/4dc4afd04a624ba5af5a99adca0c9c90 [2021-11-06 20:44:58,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:44:58,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:44:58,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:44:58,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:44:58,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:44:58,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:44:58" (1/1) ... [2021-11-06 20:44:58,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237be76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:44:58, skipping insertion in model container [2021-11-06 20:44:58,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:44:58" (1/1) ... [2021-11-06 20:44:58,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:44:58,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:45:01,037 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] [2021-11-06 20:45:01,039 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] [2021-11-06 20:45:01,040 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] [2021-11-06 20:45:01,040 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] [2021-11-06 20:45:01,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:45:01,120 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:45:01,357 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] [2021-11-06 20:45:01,357 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] [2021-11-06 20:45:01,358 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] [2021-11-06 20:45:01,358 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] [2021-11-06 20:45:01,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:45:01,521 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:45:01,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:45:01 WrapperNode [2021-11-06 20:45:01,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:45:01,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:45:01,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:45:01,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:45:01,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:45:01" (1/1) ... [2021-11-06 20:45:01,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:45:01" (1/1) ... [2021-11-06 20:45:03,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:45:03,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:45:03,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:45:03,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:45:03,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:45:01" (1/1) ... [2021-11-06 20:45:03,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:45:01" (1/1) ... [2021-11-06 20:45:04,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:45:01" (1/1) ... [2021-11-06 20:45:04,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:45:01" (1/1) ... [2021-11-06 20:45:05,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:45:01" (1/1) ... [2021-11-06 20:45:05,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:45:01" (1/1) ... [2021-11-06 20:45:05,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:45:01" (1/1) ... [2021-11-06 20:45:05,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:45:05,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:45:05,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:45:05,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:45:05,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:45:01" (1/1) ... [2021-11-06 20:45:05,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:45:05,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:45:06,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 20:45:06,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 20:45:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-06 20:45:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:45:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:45:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:45:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:45:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:45:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:45:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:45:06,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:45:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:45:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:45:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:45:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:45:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:45:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:45:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:45:26,634 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 20:45:26,635 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 20:45:26,635 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 20:45:26,635 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 20:45:26,640 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:45:26,642 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 20:45:26,680 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:45:26,681 INFO L299 CfgBuilder]: Removed 20076 assume(true) statements. [2021-11-06 20:45:26,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:45:26 BoogieIcfgContainer [2021-11-06 20:45:26,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:45:26,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:45:26,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:45:26,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:45:26,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:44:58" (1/3) ... [2021-11-06 20:45:26,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305efe89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:45:26, skipping insertion in model container [2021-11-06 20:45:26,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:45:01" (2/3) ... [2021-11-06 20:45:26,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305efe89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:45:26, skipping insertion in model container [2021-11-06 20:45:26,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:45:26" (3/3) ... [2021-11-06 20:45:26,700 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-06 20:45:26,703 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:45:26,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 98 error locations. [2021-11-06 20:45:26,764 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:45:26,768 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 [2021-11-06 20:45:26,769 INFO L340 AbstractCegarLoop]: Starting to check reachability of 98 error locations. [2021-11-06 20:45:26,900 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) [2021-11-06 20:45:26,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-06 20:45:26,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:45:26,922 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:45:26,923 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)] === [2021-11-06 20:45:26,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:45:26,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1902186889, now seen corresponding path program 1 times [2021-11-06 20:45:26,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:45:26,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215795756] [2021-11-06 20:45:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:45:26,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:45:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:45:27,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:45:27,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:45:27,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215795756] [2021-11-06 20:45:27,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215795756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:45:27,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:45:27,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:45:27,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59391989] [2021-11-06 20:45:27,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:45:27,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:45:27,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:45:27,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:45:27,479 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) [2021-11-06 20:45:30,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:45:30,489 INFO L93 Difference]: Finished difference Result 41308 states and 49389 transitions. [2021-11-06 20:45:30,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:45:30,491 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 [2021-11-06 20:45:30,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:45:30,597 INFO L225 Difference]: With dead ends: 41308 [2021-11-06 20:45:30,597 INFO L226 Difference]: Without dead ends: 27122 [2021-11-06 20:45:30,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:45:30,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27122 states. [2021-11-06 20:45:31,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27122 to 26998. [2021-11-06 20:45:31,364 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) [2021-11-06 20:45:31,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26998 states to 26998 states and 31811 transitions. [2021-11-06 20:45:31,446 INFO L78 Accepts]: Start accepts. Automaton has 26998 states and 31811 transitions. Word has length 63 [2021-11-06 20:45:31,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:45:31,447 INFO L470 AbstractCegarLoop]: Abstraction has 26998 states and 31811 transitions. [2021-11-06 20:45:31,448 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) [2021-11-06 20:45:31,448 INFO L276 IsEmpty]: Start isEmpty. Operand 26998 states and 31811 transitions. [2021-11-06 20:45:31,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 20:45:31,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:45:31,450 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:45:31,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:45:31,451 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)] === [2021-11-06 20:45:31,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:45:31,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1989378126, now seen corresponding path program 1 times [2021-11-06 20:45:31,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:45:31,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871813194] [2021-11-06 20:45:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:45:31,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:45:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:45:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:45:31,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:45:31,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871813194] [2021-11-06 20:45:31,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871813194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:45:31,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:45:31,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:45:31,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548922929] [2021-11-06 20:45:31,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:45:31,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:45:31,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:45:31,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:45:31,598 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) [2021-11-06 20:45:34,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:45:34,494 INFO L93 Difference]: Finished difference Result 52117 states and 61443 transitions. [2021-11-06 20:45:34,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:45:34,495 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 [2021-11-06 20:45:34,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:45:34,570 INFO L225 Difference]: With dead ends: 52117 [2021-11-06 20:45:34,571 INFO L226 Difference]: Without dead ends: 25243 [2021-11-06 20:45:34,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:45:34,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25243 states. [2021-11-06 20:45:35,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25243 to 25113. [2021-11-06 20:45:35,259 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) [2021-11-06 20:45:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25113 states to 25113 states and 29642 transitions. [2021-11-06 20:45:35,311 INFO L78 Accepts]: Start accepts. Automaton has 25113 states and 29642 transitions. Word has length 67 [2021-11-06 20:45:35,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:45:35,313 INFO L470 AbstractCegarLoop]: Abstraction has 25113 states and 29642 transitions. [2021-11-06 20:45:35,313 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) [2021-11-06 20:45:35,313 INFO L276 IsEmpty]: Start isEmpty. Operand 25113 states and 29642 transitions. [2021-11-06 20:45:35,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 20:45:35,315 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:45:35,315 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:45:35,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:45:35,319 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)] === [2021-11-06 20:45:35,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:45:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash 485039376, now seen corresponding path program 1 times [2021-11-06 20:45:35,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:45:35,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644703088] [2021-11-06 20:45:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:45:35,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:45:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:45:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:45:35,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:45:35,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644703088] [2021-11-06 20:45:35,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644703088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:45:35,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:45:35,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:45:35,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341294703] [2021-11-06 20:45:35,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:45:35,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:45:35,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:45:35,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:45:35,493 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) [2021-11-06 20:45:38,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:45:38,399 INFO L93 Difference]: Finished difference Result 57561 states and 67886 transitions. [2021-11-06 20:45:38,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:45:38,399 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 [2021-11-06 20:45:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:45:38,472 INFO L225 Difference]: With dead ends: 57561 [2021-11-06 20:45:38,472 INFO L226 Difference]: Without dead ends: 32572 [2021-11-06 20:45:38,519 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:45:38,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32572 states. [2021-11-06 20:45:39,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32572 to 31755. [2021-11-06 20:45:39,299 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) [2021-11-06 20:45:39,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31755 states to 31755 states and 37482 transitions. [2021-11-06 20:45:39,357 INFO L78 Accepts]: Start accepts. Automaton has 31755 states and 37482 transitions. Word has length 69 [2021-11-06 20:45:39,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:45:39,358 INFO L470 AbstractCegarLoop]: Abstraction has 31755 states and 37482 transitions. [2021-11-06 20:45:39,358 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) [2021-11-06 20:45:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 31755 states and 37482 transitions. [2021-11-06 20:45:39,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 20:45:39,497 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:45:39,497 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:45:39,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 20:45:39,497 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)] === [2021-11-06 20:45:39,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:45:39,497 INFO L85 PathProgramCache]: Analyzing trace with hash -860041770, now seen corresponding path program 1 times [2021-11-06 20:45:39,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:45:39,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79678655] [2021-11-06 20:45:39,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:45:39,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:45:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:45:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:45:39,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:45:39,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79678655] [2021-11-06 20:45:39,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79678655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:45:39,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:45:39,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:45:39,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918222205] [2021-11-06 20:45:39,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:45:39,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:45:39,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:45:39,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:45:39,645 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) [2021-11-06 20:45:42,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:45:42,675 INFO L93 Difference]: Finished difference Result 84150 states and 99311 transitions. [2021-11-06 20:45:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:45:42,678 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 [2021-11-06 20:45:42,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:45:42,813 INFO L225 Difference]: With dead ends: 84150 [2021-11-06 20:45:42,814 INFO L226 Difference]: Without dead ends: 52519 [2021-11-06 20:45:42,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:45:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52519 states. [2021-11-06 20:45:43,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52519 to 52153. [2021-11-06 20:45:44,015 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) [2021-11-06 20:45:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52153 states to 52153 states and 61612 transitions. [2021-11-06 20:45:44,106 INFO L78 Accepts]: Start accepts. Automaton has 52153 states and 61612 transitions. Word has length 69 [2021-11-06 20:45:44,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:45:44,107 INFO L470 AbstractCegarLoop]: Abstraction has 52153 states and 61612 transitions. [2021-11-06 20:45:44,107 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) [2021-11-06 20:45:44,107 INFO L276 IsEmpty]: Start isEmpty. Operand 52153 states and 61612 transitions. [2021-11-06 20:45:44,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 20:45:44,108 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:45:44,108 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:45:44,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 20:45:44,109 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)] === [2021-11-06 20:45:44,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:45:44,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1102072347, now seen corresponding path program 1 times [2021-11-06 20:45:44,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:45:44,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614163484] [2021-11-06 20:45:44,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:45:44,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:45:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:45:44,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:45:44,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:45:44,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614163484] [2021-11-06 20:45:44,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614163484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:45:44,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:45:44,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:45:44,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453697150] [2021-11-06 20:45:44,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:45:44,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:45:44,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:45:44,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:45:44,225 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) [2021-11-06 20:45:48,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:45:48,382 INFO L93 Difference]: Finished difference Result 155565 states and 183769 transitions. [2021-11-06 20:45:48,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:45:48,383 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 [2021-11-06 20:45:48,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:45:48,691 INFO L225 Difference]: With dead ends: 155565 [2021-11-06 20:45:48,691 INFO L226 Difference]: Without dead ends: 103536 [2021-11-06 20:45:48,838 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:45:48,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103536 states. [2021-11-06 20:45:51,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103536 to 103210. [2021-11-06 20:45:51,363 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) [2021-11-06 20:45:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103210 states to 103210 states and 121988 transitions. [2021-11-06 20:45:51,579 INFO L78 Accepts]: Start accepts. Automaton has 103210 states and 121988 transitions. Word has length 76 [2021-11-06 20:45:51,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:45:51,579 INFO L470 AbstractCegarLoop]: Abstraction has 103210 states and 121988 transitions. [2021-11-06 20:45:51,579 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) [2021-11-06 20:45:51,579 INFO L276 IsEmpty]: Start isEmpty. Operand 103210 states and 121988 transitions. [2021-11-06 20:45:51,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 20:45:51,581 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:45:51,581 INFO L513 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] [2021-11-06 20:45:51,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 20:45:51,581 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)] === [2021-11-06 20:45:51,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:45:51,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1795054265, now seen corresponding path program 1 times [2021-11-06 20:45:51,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:45:51,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135289527] [2021-11-06 20:45:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:45:51,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:45:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:45:51,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:45:51,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:45:51,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135289527] [2021-11-06 20:45:51,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135289527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:45:51,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:45:51,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:45:51,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454668643] [2021-11-06 20:45:51,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:45:51,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:45:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:45:51,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:45:51,692 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) [2021-11-06 20:45:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:45:57,763 INFO L93 Difference]: Finished difference Result 308560 states and 364779 transitions. [2021-11-06 20:45:57,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:45:57,763 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 [2021-11-06 20:45:57,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:45:58,347 INFO L225 Difference]: With dead ends: 308560 [2021-11-06 20:45:58,347 INFO L226 Difference]: Without dead ends: 205570 [2021-11-06 20:45:58,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:45:59,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205570 states. [2021-11-06 20:46:03,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205570 to 205446. [2021-11-06 20:46:03,605 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) [2021-11-06 20:46:04,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205446 states to 205446 states and 242920 transitions. [2021-11-06 20:46:04,273 INFO L78 Accepts]: Start accepts. Automaton has 205446 states and 242920 transitions. Word has length 92 [2021-11-06 20:46:04,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:46:04,274 INFO L470 AbstractCegarLoop]: Abstraction has 205446 states and 242920 transitions. [2021-11-06 20:46:04,274 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) [2021-11-06 20:46:04,274 INFO L276 IsEmpty]: Start isEmpty. Operand 205446 states and 242920 transitions. [2021-11-06 20:46:04,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 20:46:04,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:46:04,277 INFO L513 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] [2021-11-06 20:46:04,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 20:46:04,277 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)] === [2021-11-06 20:46:04,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:46:04,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1513883016, now seen corresponding path program 1 times [2021-11-06 20:46:04,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:46:04,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084222868] [2021-11-06 20:46:04,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:46:04,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:46:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:46:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:46:04,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:46:04,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084222868] [2021-11-06 20:46:04,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084222868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:46:04,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:46:04,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:46:04,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963724338] [2021-11-06 20:46:04,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:46:04,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:46:04,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:46:04,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:46:04,400 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)