./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.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 2ff699a14ff18600b4164aac890b6c04e9203457f89a66ec1bef9ac9dce5edac --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:00:51,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:00:51,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:00:51,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:00:51,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:00:51,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:00:51,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:00:51,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:00:51,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:00:51,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:00:51,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:00:51,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:00:51,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:00:51,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:00:51,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:00:51,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:00:51,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:00:51,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:00:51,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:00:51,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:00:51,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:00:51,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:00:51,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:00:51,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:00:51,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:00:51,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:00:51,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:00:51,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:00:51,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:00:51,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:00:51,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:00:51,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:00:51,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:00:51,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:00:51,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:00:51,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:00:51,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:00:51,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:00:51,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:00:51,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:00:51,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:00:51,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:00:51,364 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:00:51,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:00:51,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:00:51,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:00:51,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:00:51,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:00:51,370 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:00:51,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:00:51,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:00:51,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:00:51,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:00:51,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:00:51,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:00:51,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:00:51,373 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:00:51,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:00:51,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:00:51,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:00:51,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:00:51,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:00:51,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:00:51,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:00:51,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:00:51,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:00:51,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:00:51,375 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:00:51,375 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:00:51,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:00:51,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:00:51,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ff699a14ff18600b4164aac890b6c04e9203457f89a66ec1bef9ac9dce5edac [2021-11-06 19:00:51,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:00:51,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:00:51,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:00:51,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:00:51,624 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:00:51,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2021-11-06 19:00:51,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf738fd5e/c137243b76cf45838d8de2a4dd66cb41/FLAGb2ddf87b0 [2021-11-06 19:00:52,575 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:00:52,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2021-11-06 19:00:52,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf738fd5e/c137243b76cf45838d8de2a4dd66cb41/FLAGb2ddf87b0 [2021-11-06 19:00:52,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf738fd5e/c137243b76cf45838d8de2a4dd66cb41 [2021-11-06 19:00:52,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:00:52,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:00:52,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:00:52,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:00:52,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:00:52,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:00:52" (1/1) ... [2021-11-06 19:00:52,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a3ea58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:52, skipping insertion in model container [2021-11-06 19:00:52,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:00:52" (1/1) ... [2021-11-06 19:00:52,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:00:53,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:00:58,823 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555016,555029] [2021-11-06 19:00:58,826 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555185,555198] [2021-11-06 19:00:58,827 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555352,555365] [2021-11-06 19:00:58,828 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555520,555533] [2021-11-06 19:00:58,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:00:58,939 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:00:59,546 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555016,555029] [2021-11-06 19:00:59,547 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555185,555198] [2021-11-06 19:00:59,547 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555352,555365] [2021-11-06 19:00:59,547 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[555520,555533] [2021-11-06 19:00:59,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:00:59,875 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:00:59,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:59 WrapperNode [2021-11-06 19:00:59,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:00:59,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:00:59,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:00:59,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:00:59,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:59" (1/1) ... [2021-11-06 19:01:00,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:59" (1/1) ... [2021-11-06 19:01:01,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:01:01,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:01:01,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:01:01,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:01:01,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:59" (1/1) ... [2021-11-06 19:01:01,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:59" (1/1) ... [2021-11-06 19:01:02,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:59" (1/1) ... [2021-11-06 19:01:02,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:59" (1/1) ... [2021-11-06 19:01:03,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:59" (1/1) ... [2021-11-06 19:01:04,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:59" (1/1) ... [2021-11-06 19:01:04,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:59" (1/1) ... [2021-11-06 19:01:04,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:01:04,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:01:04,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:01:04,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:01:04,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:59" (1/1) ... [2021-11-06 19:01:04,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:01:04,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:01:04,894 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 19:01:04,920 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 19:01:04,936 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_ack [2021-11-06 19:01:04,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_ack [2021-11-06 19:01:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:01:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_posted_mbx [2021-11-06 19:01:04,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_posted_mbx [2021-11-06 19:01:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:01:04,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:01:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:01:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:01:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:01:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 19:01:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_hw_vf [2021-11-06 19:01:04,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_hw_vf [2021-11-06 19:01:04,938 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_posted_mbx [2021-11-06 19:01:04,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_posted_mbx [2021-11-06 19:01:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2021-11-06 19:01:04,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2021-11-06 19:01:04,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:01:04,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:01:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:01:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:01:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-06 19:01:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_msg [2021-11-06 19:01:04,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_msg [2021-11-06 19:01:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:01:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:01:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-06 19:01:04,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-06 19:01:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:01:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_msg_read_ack [2021-11-06 19:01:04,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_msg_read_ack [2021-11-06 19:01:04,941 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-06 19:01:04,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-06 19:01:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_update_mc_addr_list_vf [2021-11-06 19:01:04,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_update_mc_addr_list_vf [2021-11-06 19:01:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:01:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset_hw_vf [2021-11-06 19:01:04,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset_hw_vf [2021-11-06 19:01:04,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:04:24,116 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:04:24,117 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:04:24,117 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-06 19:04:24,118 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:04:24,118 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:04:24,120 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 19:04:24,121 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:04:24,123 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:04:24,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:04:24,235 INFO L299 CfgBuilder]: Removed 13444 assume(true) statements. [2021-11-06 19:04:24,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:04:24 BoogieIcfgContainer [2021-11-06 19:04:24,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:04:24,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:04:24,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:04:24,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:04:24,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:00:52" (1/3) ... [2021-11-06 19:04:24,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31329c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:04:24, skipping insertion in model container [2021-11-06 19:04:24,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:59" (2/3) ... [2021-11-06 19:04:24,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31329c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:04:24, skipping insertion in model container [2021-11-06 19:04:24,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:04:24" (3/3) ... [2021-11-06 19:04:24,260 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2021-11-06 19:04:24,265 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:04:24,266 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 248 error locations. [2021-11-06 19:04:24,354 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:04:24,360 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 19:04:24,362 INFO L340 AbstractCegarLoop]: Starting to check reachability of 248 error locations. [2021-11-06 19:04:24,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 14124 states, 13573 states have (on average 1.3597583437707212) internal successors, (18456), 13820 states have internal predecessors, (18456), 292 states have call successors, (292), 11 states have call predecessors, (292), 11 states have return successors, (292), 292 states have call predecessors, (292), 292 states have call successors, (292) [2021-11-06 19:04:24,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-06 19:04:24,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:24,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:04:24,581 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 245 more)] === [2021-11-06 19:04:24,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:24,586 INFO L85 PathProgramCache]: Analyzing trace with hash 181239163, now seen corresponding path program 1 times [2021-11-06 19:04:24,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:24,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149103874] [2021-11-06 19:04:24,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:24,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:25,665 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 19:04:25,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:25,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149103874] [2021-11-06 19:04:25,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149103874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:25,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:25,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:25,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879020676] [2021-11-06 19:04:25,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:25,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:25,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:25,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:25,730 INFO L87 Difference]: Start difference. First operand has 14124 states, 13573 states have (on average 1.3597583437707212) internal successors, (18456), 13820 states have internal predecessors, (18456), 292 states have call successors, (292), 11 states have call predecessors, (292), 11 states have return successors, (292), 292 states have call predecessors, (292), 292 states have call successors, (292) Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 19:04:29,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:29,290 INFO L93 Difference]: Finished difference Result 40942 states and 55082 transitions. [2021-11-06 19:04:29,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:29,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-11-06 19:04:29,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:29,728 INFO L225 Difference]: With dead ends: 40942 [2021-11-06 19:04:29,728 INFO L226 Difference]: Without dead ends: 26162 [2021-11-06 19:04:29,781 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 19:04:29,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26162 states. [2021-11-06 19:04:30,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26162 to 25762. [2021-11-06 19:04:30,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25762 states, 24908 states have (on average 1.296129757507628) internal successors, (32284), 25155 states have internal predecessors, (32284), 584 states have call successors, (584), 22 states have call predecessors, (584), 22 states have return successors, (584), 584 states have call predecessors, (584), 584 states have call successors, (584) [2021-11-06 19:04:30,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25762 states to 25762 states and 33452 transitions. [2021-11-06 19:04:30,900 INFO L78 Accepts]: Start accepts. Automaton has 25762 states and 33452 transitions. Word has length 105 [2021-11-06 19:04:30,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:30,901 INFO L470 AbstractCegarLoop]: Abstraction has 25762 states and 33452 transitions. [2021-11-06 19:04:30,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 19:04:30,902 INFO L276 IsEmpty]: Start isEmpty. Operand 25762 states and 33452 transitions. [2021-11-06 19:04:30,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 19:04:30,905 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:30,905 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, 1, 1, 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 19:04:30,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:04:30,907 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr162ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 245 more)] === [2021-11-06 19:04:30,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:30,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1940933402, now seen corresponding path program 1 times [2021-11-06 19:04:30,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:30,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873343110] [2021-11-06 19:04:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:30,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:31,609 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 19:04:31,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:31,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873343110] [2021-11-06 19:04:31,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873343110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:31,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:31,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:31,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408677129] [2021-11-06 19:04:31,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:31,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:31,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:31,620 INFO L87 Difference]: Start difference. First operand 25762 states and 33452 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 19:04:34,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:34,873 INFO L93 Difference]: Finished difference Result 47841 states and 62062 transitions. [2021-11-06 19:04:34,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:34,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2021-11-06 19:04:34,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:34,958 INFO L225 Difference]: With dead ends: 47841 [2021-11-06 19:04:34,959 INFO L226 Difference]: Without dead ends: 22315 [2021-11-06 19:04:35,048 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 19:04:35,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22315 states. [2021-11-06 19:04:35,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22315 to 22117. [2021-11-06 19:04:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22117 states, 21320 states have (on average 1.297936210131332) internal successors, (27672), 21567 states have internal predecessors, (27672), 516 states have call successors, (516), 33 states have call predecessors, (516), 33 states have return successors, (516), 516 states have call predecessors, (516), 516 states have call successors, (516) [2021-11-06 19:04:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22117 states to 22117 states and 28704 transitions. [2021-11-06 19:04:35,766 INFO L78 Accepts]: Start accepts. Automaton has 22117 states and 28704 transitions. Word has length 113 [2021-11-06 19:04:35,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:35,768 INFO L470 AbstractCegarLoop]: Abstraction has 22117 states and 28704 transitions. [2021-11-06 19:04:35,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 19:04:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 22117 states and 28704 transitions. [2021-11-06 19:04:35,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-06 19:04:35,773 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:35,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:35,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:04:35,774 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 245 more)] === [2021-11-06 19:04:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:35,783 INFO L85 PathProgramCache]: Analyzing trace with hash 809798743, now seen corresponding path program 1 times [2021-11-06 19:04:35,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:35,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492179411] [2021-11-06 19:04:35,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:35,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:36,442 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 19:04:36,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:36,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492179411] [2021-11-06 19:04:36,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492179411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:36,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:36,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:36,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496160827] [2021-11-06 19:04:36,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:36,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:36,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:36,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:36,447 INFO L87 Difference]: Start difference. First operand 22117 states and 28704 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 19:04:39,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:39,428 INFO L93 Difference]: Finished difference Result 50439 states and 65277 transitions. [2021-11-06 19:04:39,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:39,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 119 [2021-11-06 19:04:39,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:39,542 INFO L225 Difference]: With dead ends: 50439 [2021-11-06 19:04:39,543 INFO L226 Difference]: Without dead ends: 28558 [2021-11-06 19:04:39,617 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 19:04:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28558 states. [2021-11-06 19:04:40,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28558 to 27825. [2021-11-06 19:04:40,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27825 states, 26839 states have (on average 1.2963225157420173) internal successors, (34792), 27086 states have internal predecessors, (34792), 683 states have call successors, (683), 55 states have call predecessors, (683), 55 states have return successors, (683), 683 states have call predecessors, (683), 683 states have call successors, (683) [2021-11-06 19:04:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27825 states to 27825 states and 36158 transitions. [2021-11-06 19:04:40,663 INFO L78 Accepts]: Start accepts. Automaton has 27825 states and 36158 transitions. Word has length 119 [2021-11-06 19:04:40,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:40,664 INFO L470 AbstractCegarLoop]: Abstraction has 27825 states and 36158 transitions. [2021-11-06 19:04:40,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 19:04:40,665 INFO L276 IsEmpty]: Start isEmpty. Operand 27825 states and 36158 transitions. [2021-11-06 19:04:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-06 19:04:40,671 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:40,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:40,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:04:40,672 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 245 more)] === [2021-11-06 19:04:40,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:40,673 INFO L85 PathProgramCache]: Analyzing trace with hash -80279301, now seen corresponding path program 1 times [2021-11-06 19:04:40,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:40,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357220377] [2021-11-06 19:04:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:40,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:41,159 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 19:04:41,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:41,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357220377] [2021-11-06 19:04:41,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357220377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:41,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:41,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:41,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900362504] [2021-11-06 19:04:41,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:41,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:41,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:41,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:41,162 INFO L87 Difference]: Start difference. First operand 27825 states and 36158 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 19:04:44,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:44,480 INFO L93 Difference]: Finished difference Result 81183 states and 105647 transitions. [2021-11-06 19:04:44,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:44,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 134 [2021-11-06 19:04:44,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:44,791 INFO L225 Difference]: With dead ends: 81183 [2021-11-06 19:04:44,792 INFO L226 Difference]: Without dead ends: 54330 [2021-11-06 19:04:44,867 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 19:04:44,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54330 states. [2021-11-06 19:04:46,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54330 to 53930. [2021-11-06 19:04:46,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53930 states, 52250 states have (on average 1.2982583732057416) internal successors, (67834), 52497 states have internal predecessors, (67834), 1333 states have call successors, (1333), 99 states have call predecessors, (1333), 99 states have return successors, (1333), 1333 states have call predecessors, (1333), 1333 states have call successors, (1333) [2021-11-06 19:04:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53930 states to 53930 states and 70500 transitions. [2021-11-06 19:04:46,759 INFO L78 Accepts]: Start accepts. Automaton has 53930 states and 70500 transitions. Word has length 134 [2021-11-06 19:04:46,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:46,760 INFO L470 AbstractCegarLoop]: Abstraction has 53930 states and 70500 transitions. [2021-11-06 19:04:46,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 19:04:46,760 INFO L276 IsEmpty]: Start isEmpty. Operand 53930 states and 70500 transitions. [2021-11-06 19:04:46,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-06 19:04:46,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:46,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:46,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:04:46,766 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 245 more)] === [2021-11-06 19:04:46,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:46,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1360142979, now seen corresponding path program 1 times [2021-11-06 19:04:46,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:46,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161742589] [2021-11-06 19:04:46,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:46,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:47,428 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 19:04:47,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:47,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161742589] [2021-11-06 19:04:47,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161742589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:47,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:47,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:47,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006873805] [2021-11-06 19:04:47,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:47,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:47,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:47,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:47,435 INFO L87 Difference]: Start difference. First operand 53930 states and 70500 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 19:04:51,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:51,087 INFO L93 Difference]: Finished difference Result 133397 states and 174339 transitions. [2021-11-06 19:04:51,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:51,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 134 [2021-11-06 19:04:51,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:51,425 INFO L225 Difference]: With dead ends: 133397 [2021-11-06 19:04:51,425 INFO L226 Difference]: Without dead ends: 80439 [2021-11-06 19:04:51,628 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 19:04:51,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80439 states. [2021-11-06 19:04:53,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80439 to 80018. [2021-11-06 19:04:53,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80018 states, 77644 states have (on average 1.2989928391118437) internal successors, (100859), 77891 states have internal predecessors, (100859), 1983 states have call successors, (1983), 143 states have call predecessors, (1983), 143 states have return successors, (1983), 1983 states have call predecessors, (1983), 1983 states have call successors, (1983) [2021-11-06 19:04:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80018 states to 80018 states and 104825 transitions. [2021-11-06 19:04:54,532 INFO L78 Accepts]: Start accepts. Automaton has 80018 states and 104825 transitions. Word has length 134 [2021-11-06 19:04:54,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:54,532 INFO L470 AbstractCegarLoop]: Abstraction has 80018 states and 104825 transitions. [2021-11-06 19:04:54,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 19:04:54,534 INFO L276 IsEmpty]: Start isEmpty. Operand 80018 states and 104825 transitions. [2021-11-06 19:04:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-06 19:04:54,539 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:54,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:54,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:04:54,540 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 245 more)] === [2021-11-06 19:04:54,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:54,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1731605693, now seen corresponding path program 1 times [2021-11-06 19:04:54,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:54,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568479513] [2021-11-06 19:04:54,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:54,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:04:55,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:55,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568479513] [2021-11-06 19:04:55,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568479513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:55,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:55,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:55,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009542966] [2021-11-06 19:04:55,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:55,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:55,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:55,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:55,150 INFO L87 Difference]: Start difference. First operand 80018 states and 104825 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 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 19:04:56,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:56,991 INFO L93 Difference]: Finished difference Result 80018 states and 104825 transitions. [2021-11-06 19:04:56,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:56,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 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 135 [2021-11-06 19:04:56,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:57,227 INFO L225 Difference]: With dead ends: 80018 [2021-11-06 19:04:57,227 INFO L226 Difference]: Without dead ends: 80012 [2021-11-06 19:04:57,284 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:04:57,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80012 states. [2021-11-06 19:04:59,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80012 to 80012. [2021-11-06 19:04:59,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80012 states, 77641 states have (on average 1.2989657526306977) internal successors, (100853), 77885 states have internal predecessors, (100853), 1983 states have call successors, (1983), 143 states have call predecessors, (1983), 143 states have return successors, (1983), 1983 states have call predecessors, (1983), 1983 states have call successors, (1983) [2021-11-06 19:04:59,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80012 states to 80012 states and 104819 transitions. [2021-11-06 19:04:59,622 INFO L78 Accepts]: Start accepts. Automaton has 80012 states and 104819 transitions. Word has length 135 [2021-11-06 19:04:59,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:59,622 INFO L470 AbstractCegarLoop]: Abstraction has 80012 states and 104819 transitions. [2021-11-06 19:04:59,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 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 19:04:59,623 INFO L276 IsEmpty]: Start isEmpty. Operand 80012 states and 104819 transitions. [2021-11-06 19:04:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 19:04:59,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:59,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:59,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:04:59,630 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 245 more)] === [2021-11-06 19:04:59,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:59,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1920542682, now seen corresponding path program 1 times [2021-11-06 19:04:59,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:59,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064881857] [2021-11-06 19:04:59,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:59,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:05:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:05:00,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:05:00,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064881857] [2021-11-06 19:05:00,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064881857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:05:00,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:05:00,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:05:00,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60955116] [2021-11-06 19:05:00,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:05:00,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:05:00,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:05:00,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:05:00,510 INFO L87 Difference]: Start difference. First operand 80012 states and 104819 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 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 19:05:02,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:05:02,098 INFO L93 Difference]: Finished difference Result 80012 states and 104819 transitions. [2021-11-06 19:05:02,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:05:02,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 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 137 [2021-11-06 19:05:02,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:05:02,299 INFO L225 Difference]: With dead ends: 80012 [2021-11-06 19:05:02,299 INFO L226 Difference]: Without dead ends: 80006 [2021-11-06 19:05:02,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:05:02,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80006 states.