./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.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 af0382669342cd1b96ae06a23957b47efa45a6d5fd31066fb67e67230764554c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 20:56:24,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:56:24,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:56:24,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:56:24,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:56:24,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:56:24,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:56:24,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:56:24,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:56:24,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:56:24,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:56:24,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:56:24,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:56:24,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:56:24,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:56:24,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:56:24,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:56:24,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:56:24,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:56:24,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:56:24,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:56:24,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:56:24,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:56:24,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:56:24,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:56:24,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:56:24,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:56:24,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:56:24,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:56:24,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:56:24,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:56:24,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:56:24,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:56:24,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:56:24,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:56:24,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:56:24,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:56:24,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:56:24,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:56:24,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:56:24,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:56:24,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:56:24,480 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:56:24,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:56:24,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:56:24,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:56:24,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:56:24,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:56:24,482 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:56:24,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:56:24,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:56:24,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:56:24,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:56:24,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:56:24,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:56:24,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:56:24,484 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:56:24,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:56:24,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:56:24,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:56:24,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:56:24,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:56:24,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:56:24,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:56:24,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:56:24,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:56:24,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:56:24,486 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:56:24,486 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:56:24,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:56:24,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:56:24,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af0382669342cd1b96ae06a23957b47efa45a6d5fd31066fb67e67230764554c [2021-11-06 20:56:24,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:56:24,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:56:24,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:56:24,746 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:56:24,747 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:56:24,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2021-11-06 20:56:24,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5b7a5bd8/398ee178537b43d3b4395569925b1558/FLAG4c692cae3 [2021-11-06 20:56:25,452 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:56:25,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2021-11-06 20:56:25,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5b7a5bd8/398ee178537b43d3b4395569925b1558/FLAG4c692cae3 [2021-11-06 20:56:25,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5b7a5bd8/398ee178537b43d3b4395569925b1558 [2021-11-06 20:56:25,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:56:25,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:56:25,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:56:25,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:56:25,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:56:25,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:56:25" (1/1) ... [2021-11-06 20:56:25,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fdf2ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:25, skipping insertion in model container [2021-11-06 20:56:25,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:56:25" (1/1) ... [2021-11-06 20:56:25,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:56:25,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:56:31,462 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582586,582599] [2021-11-06 20:56:31,465 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582733,582746] [2021-11-06 20:56:31,466 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582872,582885] [2021-11-06 20:56:31,466 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[583030,583043] [2021-11-06 20:56:31,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:56:31,559 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:56:32,024 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582586,582599] [2021-11-06 20:56:32,025 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582733,582746] [2021-11-06 20:56:32,026 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582872,582885] [2021-11-06 20:56:32,026 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[583030,583043] [2021-11-06 20:56:32,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:56:32,287 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:56:32,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:32 WrapperNode [2021-11-06 20:56:32,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:56:32,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:56:32,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:56:32,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:56:32,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:32" (1/1) ... [2021-11-06 20:56:32,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:32" (1/1) ... [2021-11-06 20:56:36,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:56:36,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:56:36,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:56:36,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:56:36,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:32" (1/1) ... [2021-11-06 20:56:36,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:32" (1/1) ... [2021-11-06 20:56:37,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:32" (1/1) ... [2021-11-06 20:56:37,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:32" (1/1) ... [2021-11-06 20:56:38,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:32" (1/1) ... [2021-11-06 20:56:39,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:32" (1/1) ... [2021-11-06 20:56:39,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:32" (1/1) ... [2021-11-06 20:56:40,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:56:40,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:56:40,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:56:40,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:56:40,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:32" (1/1) ... [2021-11-06 20:56:40,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:56:40,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:56:40,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 20:56:40,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 20:56:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:56:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:56:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:56:40,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:56:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:56:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:56:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 20:56:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:56:40,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:56:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:56:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:56:40,176 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-06 20:56:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:56:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:56:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:56:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:56:40,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 21:01:00,096 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 21:01:00,096 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-06 21:01:00,096 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-06 21:01:00,097 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 21:01:00,097 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-06 21:01:00,097 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-06 21:01:00,097 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-06 21:01:00,097 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-06 21:01:00,097 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 21:01:00,098 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#7: ldv_switch_0_#res := 0; [2021-11-06 21:01:00,098 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#8: ldv_switch_0_#res := 0; [2021-11-06 21:01:00,098 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-06 21:01:00,098 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#3: ldv_switch_3_#res := 0; [2021-11-06 21:01:00,099 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 21:01:00,102 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 21:01:00,102 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 21:01:00,107 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-06 21:01:00,159 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 21:01:00,159 INFO L299 CfgBuilder]: Removed 28551 assume(true) statements. [2021-11-06 21:01:00,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:01:00 BoogieIcfgContainer [2021-11-06 21:01:00,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 21:01:00,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 21:01:00,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 21:01:00,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 21:01:00,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:56:25" (1/3) ... [2021-11-06 21:01:00,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343df793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:01:00, skipping insertion in model container [2021-11-06 21:01:00,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:56:32" (2/3) ... [2021-11-06 21:01:00,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343df793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:01:00, skipping insertion in model container [2021-11-06 21:01:00,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:01:00" (3/3) ... [2021-11-06 21:01:00,183 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2021-11-06 21:01:00,187 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 21:01:00,187 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-06 21:01:00,273 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 21:01:00,279 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 21:01:00,280 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-06 21:01:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 22715 states, 22711 states have (on average 1.2627361190612478) internal successors, (28678), 22714 states have internal predecessors, (28678), 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 21:01:00,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-06 21:01:00,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:01:00,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:00,523 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 21:01:00,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:01:00,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1426199353, now seen corresponding path program 1 times [2021-11-06 21:01:00,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:01:00,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108519312] [2021-11-06 21:01:00,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:01:00,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:01:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:01:01,519 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 21:01:01,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:01:01,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108519312] [2021-11-06 21:01:01,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108519312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:01:01,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:01:01,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:01:01,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937241538] [2021-11-06 21:01:01,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:01:01,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:01:01,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:01:01,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:01:01,573 INFO L87 Difference]: Start difference. First operand has 22715 states, 22711 states have (on average 1.2627361190612478) internal successors, (28678), 22714 states have internal predecessors, (28678), 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 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 21:01:05,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:01:05,303 INFO L93 Difference]: Finished difference Result 66415 states and 83645 transitions. [2021-11-06 21:01:05,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:01:05,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 193 [2021-11-06 21:01:05,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:01:05,507 INFO L225 Difference]: With dead ends: 66415 [2021-11-06 21:01:05,508 INFO L226 Difference]: Without dead ends: 43589 [2021-11-06 21:01:05,574 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 21:01:05,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43589 states. [2021-11-06 21:01:06,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43589 to 43587. [2021-11-06 21:01:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43587 states, 43583 states have (on average 1.228667140857674) internal successors, (53549), 43586 states have internal predecessors, (53549), 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 21:01:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43587 states to 43587 states and 53549 transitions. [2021-11-06 21:01:06,932 INFO L78 Accepts]: Start accepts. Automaton has 43587 states and 53549 transitions. Word has length 193 [2021-11-06 21:01:06,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:01:06,935 INFO L470 AbstractCegarLoop]: Abstraction has 43587 states and 53549 transitions. [2021-11-06 21:01:06,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 21:01:06,936 INFO L276 IsEmpty]: Start isEmpty. Operand 43587 states and 53549 transitions. [2021-11-06 21:01:06,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-06 21:01:06,944 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:01:06,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:06,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 21:01:06,945 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 21:01:06,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:01:06,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1940522864, now seen corresponding path program 1 times [2021-11-06 21:01:06,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:01:06,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300087251] [2021-11-06 21:01:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:01:06,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:01:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:01:07,617 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 21:01:07,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:01:07,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300087251] [2021-11-06 21:01:07,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300087251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:01:07,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:01:07,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:01:07,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652151753] [2021-11-06 21:01:07,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:01:07,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:01:07,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:01:07,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:01:07,620 INFO L87 Difference]: Start difference. First operand 43587 states and 53549 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 21:01:11,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:01:11,662 INFO L93 Difference]: Finished difference Result 76987 states and 94810 transitions. [2021-11-06 21:01:11,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:01:11,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 215 [2021-11-06 21:01:11,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:01:11,754 INFO L225 Difference]: With dead ends: 76987 [2021-11-06 21:01:11,754 INFO L226 Difference]: Without dead ends: 33868 [2021-11-06 21:01:11,817 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 21:01:11,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33868 states. [2021-11-06 21:01:12,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33868 to 33846. [2021-11-06 21:01:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33846 states, 33842 states have (on average 1.2332013474380947) internal successors, (41734), 33845 states have internal predecessors, (41734), 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 21:01:12,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33846 states to 33846 states and 41734 transitions. [2021-11-06 21:01:12,615 INFO L78 Accepts]: Start accepts. Automaton has 33846 states and 41734 transitions. Word has length 215 [2021-11-06 21:01:12,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:01:12,616 INFO L470 AbstractCegarLoop]: Abstraction has 33846 states and 41734 transitions. [2021-11-06 21:01:12,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 21:01:12,617 INFO L276 IsEmpty]: Start isEmpty. Operand 33846 states and 41734 transitions. [2021-11-06 21:01:12,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-06 21:01:12,621 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:01:12,622 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:12,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 21:01:12,623 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 21:01:12,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:01:12,623 INFO L85 PathProgramCache]: Analyzing trace with hash 713337572, now seen corresponding path program 1 times [2021-11-06 21:01:12,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:01:12,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684007819] [2021-11-06 21:01:12,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:01:12,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:01:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:01:13,076 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 21:01:13,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:01:13,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684007819] [2021-11-06 21:01:13,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684007819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:01:13,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:01:13,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:01:13,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910443864] [2021-11-06 21:01:13,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:01:13,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:01:13,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:01:13,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:01:13,078 INFO L87 Difference]: Start difference. First operand 33846 states and 41734 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 21:01:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:01:16,523 INFO L93 Difference]: Finished difference Result 88731 states and 109406 transitions. [2021-11-06 21:01:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:01:16,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 217 [2021-11-06 21:01:16,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:01:16,705 INFO L225 Difference]: With dead ends: 88731 [2021-11-06 21:01:16,705 INFO L226 Difference]: Without dead ends: 61201 [2021-11-06 21:01:16,761 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 21:01:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61201 states. [2021-11-06 21:01:18,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61201 to 61191. [2021-11-06 21:01:18,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61191 states, 61187 states have (on average 1.2330723846568716) internal successors, (75448), 61190 states have internal predecessors, (75448), 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 21:01:18,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61191 states to 61191 states and 75448 transitions. [2021-11-06 21:01:18,283 INFO L78 Accepts]: Start accepts. Automaton has 61191 states and 75448 transitions. Word has length 217 [2021-11-06 21:01:18,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:01:18,283 INFO L470 AbstractCegarLoop]: Abstraction has 61191 states and 75448 transitions. [2021-11-06 21:01:18,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 21:01:18,284 INFO L276 IsEmpty]: Start isEmpty. Operand 61191 states and 75448 transitions. [2021-11-06 21:01:18,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-06 21:01:18,289 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:01:18,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:18,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 21:01:18,290 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 21:01:18,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:01:18,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1734405926, now seen corresponding path program 1 times [2021-11-06 21:01:18,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:01:18,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12303167] [2021-11-06 21:01:18,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:01:18,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:01:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:01:18,962 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 21:01:18,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:01:18,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12303167] [2021-11-06 21:01:18,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12303167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:01:18,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:01:18,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:01:18,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457078856] [2021-11-06 21:01:18,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 21:01:18,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:01:18,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 21:01:18,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 21:01:18,964 INFO L87 Difference]: Start difference. First operand 61191 states and 75448 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 21:01:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:01:22,756 INFO L93 Difference]: Finished difference Result 143419 states and 176830 transitions. [2021-11-06 21:01:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 21:01:22,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 217 [2021-11-06 21:01:22,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:01:22,941 INFO L225 Difference]: With dead ends: 143419 [2021-11-06 21:01:22,941 INFO L226 Difference]: Without dead ends: 88544 [2021-11-06 21:01:23,026 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 21:01:23,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88544 states. [2021-11-06 21:01:24,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88544 to 88542. [2021-11-06 21:01:24,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88542 states, 88538 states have (on average 1.2330072963021528) internal successors, (109168), 88541 states have internal predecessors, (109168), 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 21:01:24,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88542 states to 88542 states and 109168 transitions. [2021-11-06 21:01:24,755 INFO L78 Accepts]: Start accepts. Automaton has 88542 states and 109168 transitions. Word has length 217 [2021-11-06 21:01:24,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:01:24,755 INFO L470 AbstractCegarLoop]: Abstraction has 88542 states and 109168 transitions. [2021-11-06 21:01:24,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 21:01:24,756 INFO L276 IsEmpty]: Start isEmpty. Operand 88542 states and 109168 transitions. [2021-11-06 21:01:24,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-06 21:01:24,763 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:01:24,763 INFO L513 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:24,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 21:01:24,764 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 21:01:24,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:01:24,764 INFO L85 PathProgramCache]: Analyzing trace with hash -691670711, now seen corresponding path program 1 times [2021-11-06 21:01:24,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:01:24,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224485433] [2021-11-06 21:01:24,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:01:24,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:01:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:01:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 21:01:25,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:01:25,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224485433] [2021-11-06 21:01:25,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224485433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:01:25,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:01:25,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 21:01:25,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475211171] [2021-11-06 21:01:25,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:01:25,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:01:25,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:01:25,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:01:25,683 INFO L87 Difference]: Start difference. First operand 88542 states and 109168 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 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)