./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU --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 c097d45bf953c22cc618c35d7b4a2d8fd3613a03309b6d0b505b710dc0ccbe6f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:35:27,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:35:27,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:35:27,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:35:28,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:35:28,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:35:28,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:35:28,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:35:28,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:35:28,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:35:28,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:35:28,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:35:28,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:35:28,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:35:28,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:35:28,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:35:28,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:35:28,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:35:28,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:35:28,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:35:28,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:35:28,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:35:28,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:35:28,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:35:28,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:35:28,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:35:28,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:35:28,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:35:28,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:35:28,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:35:28,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:35:28,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:35:28,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:35:28,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:35:28,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:35:28,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:35:28,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:35:28,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:35:28,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:35:28,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:35:28,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:35:28,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 22:35:28,153 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:35:28,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:35:28,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:35:28,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:35:28,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:35:28,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:35:28,162 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:35:28,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:35:28,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:35:28,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:35:28,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:35:28,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:35:28,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:35:28,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:35:28,165 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:35:28,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:35:28,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:35:28,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:35:28,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:35:28,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:35:28,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:35:28,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:35:28,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:35:28,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:35:28,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:35:28,168 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:35:28,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:35:28,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:35:28,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:35:28,170 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c097d45bf953c22cc618c35d7b4a2d8fd3613a03309b6d0b505b710dc0ccbe6f [2021-11-02 22:35:28,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:35:28,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:35:28,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:35:28,503 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:35:28,504 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:35:28,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-02 22:35:28,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU/data/1f0178f05/6cb80ad84565444bac6f089a9fb7b772/FLAG8748b51e8 [2021-11-02 22:35:29,582 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:35:29,582 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-02 22:35:29,633 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU/data/1f0178f05/6cb80ad84565444bac6f089a9fb7b772/FLAG8748b51e8 [2021-11-02 22:35:30,002 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU/data/1f0178f05/6cb80ad84565444bac6f089a9fb7b772 [2021-11-02 22:35:30,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:35:30,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:35:30,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:35:30,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:35:30,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:35:30,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:35:30" (1/1) ... [2021-11-02 22:35:30,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69702abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:30, skipping insertion in model container [2021-11-02 22:35:30,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:35:30" (1/1) ... [2021-11-02 22:35:30,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:35:30,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:35:33,376 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[348277,348290] [2021-11-02 22:35:33,379 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[348422,348435] [2021-11-02 22:35:33,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:35:33,457 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:35:33,895 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[348277,348290] [2021-11-02 22:35:33,896 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i[348422,348435] [2021-11-02 22:35:33,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:35:34,142 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:35:34,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:34 WrapperNode [2021-11-02 22:35:34,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:35:34,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:35:34,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:35:34,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:35:34,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:34" (1/1) ... [2021-11-02 22:35:34,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:34" (1/1) ... [2021-11-02 22:35:49,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:35:49,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:35:49,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:35:49,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:35:49,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:34" (1/1) ... [2021-11-02 22:35:49,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:34" (1/1) ... [2021-11-02 22:35:50,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:34" (1/1) ... [2021-11-02 22:35:50,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:34" (1/1) ... [2021-11-02 22:35:52,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:34" (1/1) ... [2021-11-02 22:35:52,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:34" (1/1) ... [2021-11-02 22:35:53,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:34" (1/1) ... [2021-11-02 22:35:53,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:35:53,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:35:53,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:35:53,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:35:53,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:34" (1/1) ... [2021-11-02 22:35:53,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:35:53,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:35:53,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:35:53,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6244c32d-3500-43c5-be6e-4e40e2700e2a/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:35:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 22:35:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:35:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 22:35:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 22:35:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:35:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:35:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:35:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:35:53,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:35:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 22:35:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 22:35:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:35:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:35:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:35:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:35:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:37:30,729 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-02 22:37:30,730 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-02 22:37:30,730 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-02 22:37:30,730 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-02 22:37:30,736 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-02 22:37:30,739 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-02 22:37:30,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:37:30,834 INFO L299 CfgBuilder]: Removed 36416 assume(true) statements. [2021-11-02 22:37:30,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:37:30 BoogieIcfgContainer [2021-11-02 22:37:30,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:37:30,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:37:30,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:37:30,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:37:30,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:35:30" (1/3) ... [2021-11-02 22:37:30,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13262143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:37:30, skipping insertion in model container [2021-11-02 22:37:30,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:35:34" (2/3) ... [2021-11-02 22:37:30,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13262143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:37:30, skipping insertion in model container [2021-11-02 22:37:30,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:37:30" (3/3) ... [2021-11-02 22:37:30,870 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-02 22:37:30,876 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:37:30,877 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-02 22:37:31,052 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:37:31,060 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 [2021-11-02 22:37:31,060 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-02 22:37:31,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 23391 states, 23381 states have (on average 1.207989393096959) internal successors, (28244), 23390 states have internal predecessors, (28244), 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) [2021-11-02 22:37:31,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 22:37:31,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:31,449 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] [2021-11-02 22:37:31,449 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:37:31,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:31,455 INFO L85 PathProgramCache]: Analyzing trace with hash 633292136, now seen corresponding path program 1 times [2021-11-02 22:37:31,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:31,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680988702] [2021-11-02 22:37:31,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:31,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:37:32,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:32,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680988702] [2021-11-02 22:37:32,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680988702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:32,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:32,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:32,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014394061] [2021-11-02 22:37:32,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:32,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:32,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:32,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:32,552 INFO L87 Difference]: Start difference. First operand has 23391 states, 23381 states have (on average 1.207989393096959) internal successors, (28244), 23390 states have internal predecessors, (28244), 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) [2021-11-02 22:37:37,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:37,444 INFO L93 Difference]: Finished difference Result 67155 states and 81041 transitions. [2021-11-02 22:37:37,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:37,447 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 [2021-11-02 22:37:37,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:37,742 INFO L225 Difference]: With dead ends: 67155 [2021-11-02 22:37:37,742 INFO L226 Difference]: Without dead ends: 43434 [2021-11-02 22:37:37,805 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 [2021-11-02 22:37:37,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43434 states. [2021-11-02 22:37:39,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43434 to 43387. [2021-11-02 22:37:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43387 states, 43377 states have (on average 1.1995988657583512) internal successors, (52035), 43386 states have internal predecessors, (52035), 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) [2021-11-02 22:37:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43387 states to 43387 states and 52035 transitions. [2021-11-02 22:37:39,689 INFO L78 Accepts]: Start accepts. Automaton has 43387 states and 52035 transitions. Word has length 63 [2021-11-02 22:37:39,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:39,691 INFO L470 AbstractCegarLoop]: Abstraction has 43387 states and 52035 transitions. [2021-11-02 22:37:39,696 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) [2021-11-02 22:37:39,697 INFO L276 IsEmpty]: Start isEmpty. Operand 43387 states and 52035 transitions. [2021-11-02 22:37:39,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 22:37:39,710 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:39,710 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] [2021-11-02 22:37:39,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:37:39,711 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:37:39,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:39,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2059571142, now seen corresponding path program 1 times [2021-11-02 22:37:39,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:39,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723945713] [2021-11-02 22:37:39,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:39,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:37:40,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:40,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723945713] [2021-11-02 22:37:40,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723945713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:40,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:40,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:40,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679093631] [2021-11-02 22:37:40,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:40,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:40,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:40,144 INFO L87 Difference]: Start difference. First operand 43387 states and 52035 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:45,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:45,326 INFO L93 Difference]: Finished difference Result 106550 states and 127785 transitions. [2021-11-02 22:37:45,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:45,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-02 22:37:45,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:45,571 INFO L225 Difference]: With dead ends: 106550 [2021-11-02 22:37:45,572 INFO L226 Difference]: Without dead ends: 63231 [2021-11-02 22:37:45,692 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 [2021-11-02 22:37:45,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63231 states. [2021-11-02 22:37:47,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63231 to 63213. [2021-11-02 22:37:47,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63213 states, 63203 states have (on average 1.1990411847538882) internal successors, (75783), 63212 states have internal predecessors, (75783), 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) [2021-11-02 22:37:47,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63213 states to 63213 states and 75783 transitions. [2021-11-02 22:37:47,954 INFO L78 Accepts]: Start accepts. Automaton has 63213 states and 75783 transitions. Word has length 72 [2021-11-02 22:37:47,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:47,956 INFO L470 AbstractCegarLoop]: Abstraction has 63213 states and 75783 transitions. [2021-11-02 22:37:47,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:37:47,960 INFO L276 IsEmpty]: Start isEmpty. Operand 63213 states and 75783 transitions. [2021-11-02 22:37:47,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 22:37:47,971 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:47,972 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:47,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:37:47,973 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:37:47,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:47,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1736663696, now seen corresponding path program 1 times [2021-11-02 22:37:47,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:47,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042061265] [2021-11-02 22:37:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:47,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:48,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:37:48,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:48,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042061265] [2021-11-02 22:37:48,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042061265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:48,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:48,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:48,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542930238] [2021-11-02 22:37:48,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:48,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:48,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:48,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:48,626 INFO L87 Difference]: Start difference. First operand 63213 states and 75783 transitions. Second operand has 3 states, 3 states have (on average 28.0) 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) [2021-11-02 22:37:53,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:37:53,603 INFO L93 Difference]: Finished difference Result 173851 states and 208510 transitions. [2021-11-02 22:37:53,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:37:53,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) 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) Word has length 84 [2021-11-02 22:37:53,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:37:54,282 INFO L225 Difference]: With dead ends: 173851 [2021-11-02 22:37:54,282 INFO L226 Difference]: Without dead ends: 110706 [2021-11-02 22:37:54,439 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 [2021-11-02 22:37:54,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110706 states. [2021-11-02 22:37:57,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110706 to 110262. [2021-11-02 22:37:57,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110262 states, 110252 states have (on average 1.1996154264775243) internal successors, (132260), 110261 states have internal predecessors, (132260), 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) [2021-11-02 22:37:58,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110262 states to 110262 states and 132260 transitions. [2021-11-02 22:37:58,041 INFO L78 Accepts]: Start accepts. Automaton has 110262 states and 132260 transitions. Word has length 84 [2021-11-02 22:37:58,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:37:58,041 INFO L470 AbstractCegarLoop]: Abstraction has 110262 states and 132260 transitions. [2021-11-02 22:37:58,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) 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) [2021-11-02 22:37:58,042 INFO L276 IsEmpty]: Start isEmpty. Operand 110262 states and 132260 transitions. [2021-11-02 22:37:58,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 22:37:58,051 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:37:58,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:37:58,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:37:58,052 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 22:37:58,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:37:58,053 INFO L85 PathProgramCache]: Analyzing trace with hash -43129630, now seen corresponding path program 1 times [2021-11-02 22:37:58,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:37:58,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271333538] [2021-11-02 22:37:58,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:37:58,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:37:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:37:58,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:37:58,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:37:58,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271333538] [2021-11-02 22:37:58,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271333538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:37:58,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:37:58,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:37:58,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930025381] [2021-11-02 22:37:58,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:37:58,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:37:58,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:37:58,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:37:58,370 INFO L87 Difference]: Start difference. First operand 110262 states and 132260 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2021-11-02 22:38:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:38:05,164 INFO L93 Difference]: Finished difference Result 233682 states and 280715 transitions. [2021-11-02 22:38:05,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:38:05,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2021-11-02 22:38:05,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:38:05,590 INFO L225 Difference]: With dead ends: 233682 [2021-11-02 22:38:05,590 INFO L226 Difference]: Without dead ends: 123488 [2021-11-02 22:38:05,735 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 [2021-11-02 22:38:05,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123488 states.