./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-icplus-ipg.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-icplus-ipg.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 7c9f1b92adb9acc769d32e01935187ba88bc4e22a7a5cb13176ef92b5b4818de --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:59:58,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:59:58,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:59:58,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:59:58,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:59:58,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:59:58,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:59:58,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:59:58,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:59:58,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:59:58,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:59:58,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:59:58,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:59:58,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:59:58,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:59:58,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:59:58,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:59:58,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:59:58,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:59:58,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:59:58,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:59:58,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:59:58,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:59:58,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:59:58,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:59:58,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:59:58,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:59:58,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:59:58,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:59:58,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:59:58,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:59:58,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:59:58,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:59:58,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:59:58,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:59:58,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:59:58,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:59:58,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:59:58,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:59:58,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:59:58,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:59:58,458 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:59:58,481 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:59:58,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:59:58,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:59:58,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:59:58,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:59:58,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:59:58,483 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:59:58,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:59:58,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:59:58,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:59:58,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:59:58,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:59:58,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:59:58,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:59:58,485 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:59:58,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:59:58,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:59:58,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:59:58,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:59:58,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:59:58,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:59:58,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:59:58,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:59:58,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:59:58,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:59:58,486 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:59:58,486 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:59:58,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:59:58,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:59:58,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c9f1b92adb9acc769d32e01935187ba88bc4e22a7a5cb13176ef92b5b4818de [2021-11-06 18:59:58,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:59:58,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:59:58,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:59:58,696 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:59:58,697 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:59:58,697 INFO L432 ainManager$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-icplus-ipg.cil.i [2021-11-06 18:59:58,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc50fc4ca/012d936f4033455a86938cbd09399240/FLAG21315939f [2021-11-06 18:59:59,345 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:59:59,345 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-icplus-ipg.cil.i [2021-11-06 18:59:59,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc50fc4ca/012d936f4033455a86938cbd09399240/FLAG21315939f [2021-11-06 18:59:59,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc50fc4ca/012d936f4033455a86938cbd09399240 [2021-11-06 18:59:59,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:59:59,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:59:59,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:59:59,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:59:59,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:59:59,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:59:59" (1/1) ... [2021-11-06 18:59:59,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b87e145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:59:59, skipping insertion in model container [2021-11-06 18:59:59,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:59:59" (1/1) ... [2021-11-06 18:59:59,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:59:59,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:00:01,542 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-icplus-ipg.cil.i[315136,315149] [2021-11-06 19:00:01,545 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-icplus-ipg.cil.i[315305,315318] [2021-11-06 19:00:01,545 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-icplus-ipg.cil.i[315472,315485] [2021-11-06 19:00:01,545 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-icplus-ipg.cil.i[315640,315653] [2021-11-06 19:00:01,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:00:01,600 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:00:01,774 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-icplus-ipg.cil.i[315136,315149] [2021-11-06 19:00:01,774 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-icplus-ipg.cil.i[315305,315318] [2021-11-06 19:00:01,775 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-icplus-ipg.cil.i[315472,315485] [2021-11-06 19:00:01,775 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-icplus-ipg.cil.i[315640,315653] [2021-11-06 19:00:01,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:00:01,881 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:00:01,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:01 WrapperNode [2021-11-06 19:00:01,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:00:01,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:00:01,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:00:01,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:00:01,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:01" (1/1) ... [2021-11-06 19:00:01,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:01" (1/1) ... [2021-11-06 19:00:02,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:00:02,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:00:02,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:00:02,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:00:02,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:01" (1/1) ... [2021-11-06 19:00:02,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:01" (1/1) ... [2021-11-06 19:00:02,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:01" (1/1) ... [2021-11-06 19:00:02,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:01" (1/1) ... [2021-11-06 19:00:02,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:01" (1/1) ... [2021-11-06 19:00:02,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:01" (1/1) ... [2021-11-06 19:00:02,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:01" (1/1) ... [2021-11-06 19:00:03,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:00:03,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:00:03,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:00:03,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:00:03,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:01" (1/1) ... [2021-11-06 19:00:03,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:00:03,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:00:03,176 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 19:00:03,196 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 19:00:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:00:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:00:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:00:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:00:03,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:00:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:00:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:00:03,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:00:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:00:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:00:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:00:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:00:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:00:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:00:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-06 19:00:03,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:00:12,856 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:00:12,856 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:00:12,857 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:00:12,857 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:00:12,857 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:00:12,858 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:00:12,879 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:00:12,879 INFO L299 CfgBuilder]: Removed 5020 assume(true) statements. [2021-11-06 19:00:12,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:00:12 BoogieIcfgContainer [2021-11-06 19:00:12,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:00:12,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:00:12,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:00:12,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:00:12,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:59:59" (1/3) ... [2021-11-06 19:00:12,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b80ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:00:12, skipping insertion in model container [2021-11-06 19:00:12,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:01" (2/3) ... [2021-11-06 19:00:12,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b80ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:00:12, skipping insertion in model container [2021-11-06 19:00:12,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:00:12" (3/3) ... [2021-11-06 19:00:12,891 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-06 19:00:12,895 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:00:12,895 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2021-11-06 19:00:12,946 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:00:12,951 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 19:00:12,952 INFO L340 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2021-11-06 19:00:13,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 4190 states, 4146 states have (on average 1.307284129281235) internal successors, (5420), 4189 states have internal predecessors, (5420), 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 19:00:13,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 19:00:13,026 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:13,026 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] [2021-11-06 19:00:13,027 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:13,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:13,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1114883933, now seen corresponding path program 1 times [2021-11-06 19:00:13,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:13,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522211282] [2021-11-06 19:00:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:13,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:13,430 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 19:00:13,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:13,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522211282] [2021-11-06 19:00:13,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522211282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:13,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:13,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:13,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901889467] [2021-11-06 19:00:13,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:13,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:13,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:13,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:13,454 INFO L87 Difference]: Start difference. First operand has 4190 states, 4146 states have (on average 1.307284129281235) internal successors, (5420), 4189 states have internal predecessors, (5420), 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 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 19:00:13,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:13,978 INFO L93 Difference]: Finished difference Result 12072 states and 15622 transitions. [2021-11-06 19:00:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:13,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-06 19:00:13,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:14,023 INFO L225 Difference]: With dead ends: 12072 [2021-11-06 19:00:14,023 INFO L226 Difference]: Without dead ends: 7724 [2021-11-06 19:00:14,038 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 19:00:14,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7724 states. [2021-11-06 19:00:14,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7724 to 7708. [2021-11-06 19:00:14,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7708 states, 7664 states have (on average 1.2519572025052192) internal successors, (9595), 7707 states have internal predecessors, (9595), 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 19:00:14,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7708 states to 7708 states and 9595 transitions. [2021-11-06 19:00:14,294 INFO L78 Accepts]: Start accepts. Automaton has 7708 states and 9595 transitions. Word has length 42 [2021-11-06 19:00:14,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:14,294 INFO L470 AbstractCegarLoop]: Abstraction has 7708 states and 9595 transitions. [2021-11-06 19:00:14,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 19:00:14,295 INFO L276 IsEmpty]: Start isEmpty. Operand 7708 states and 9595 transitions. [2021-11-06 19:00:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 19:00:14,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:14,299 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] [2021-11-06 19:00:14,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:00:14,300 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:14,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:14,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1435015324, now seen corresponding path program 1 times [2021-11-06 19:00:14,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:14,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417661902] [2021-11-06 19:00:14,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:14,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:14,453 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 19:00:14,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:14,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417661902] [2021-11-06 19:00:14,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417661902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:14,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:14,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:14,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183120822] [2021-11-06 19:00:14,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:14,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:14,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:14,457 INFO L87 Difference]: Start difference. First operand 7708 states and 9595 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 19:00:15,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:15,132 INFO L93 Difference]: Finished difference Result 21388 states and 26599 transitions. [2021-11-06 19:00:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:15,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-06 19:00:15,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:15,180 INFO L225 Difference]: With dead ends: 21388 [2021-11-06 19:00:15,180 INFO L226 Difference]: Without dead ends: 13748 [2021-11-06 19:00:15,196 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 19:00:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13748 states. [2021-11-06 19:00:15,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13748 to 11656. [2021-11-06 19:00:15,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11656 states, 11612 states have (on average 1.2506889424733034) internal successors, (14523), 11655 states have internal predecessors, (14523), 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 19:00:15,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11656 states to 11656 states and 14523 transitions. [2021-11-06 19:00:15,477 INFO L78 Accepts]: Start accepts. Automaton has 11656 states and 14523 transitions. Word has length 42 [2021-11-06 19:00:15,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:15,477 INFO L470 AbstractCegarLoop]: Abstraction has 11656 states and 14523 transitions. [2021-11-06 19:00:15,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 19:00:15,478 INFO L276 IsEmpty]: Start isEmpty. Operand 11656 states and 14523 transitions. [2021-11-06 19:00:15,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 19:00:15,479 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:15,480 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] [2021-11-06 19:00:15,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:00:15,480 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:15,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:15,481 INFO L85 PathProgramCache]: Analyzing trace with hash -234934328, now seen corresponding path program 1 times [2021-11-06 19:00:15,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:15,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483190828] [2021-11-06 19:00:15,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:15,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:15,569 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 19:00:15,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:15,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483190828] [2021-11-06 19:00:15,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483190828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:15,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:15,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:15,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383893762] [2021-11-06 19:00:15,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:15,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:15,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:15,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:15,572 INFO L87 Difference]: Start difference. First operand 11656 states and 14523 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 19:00:16,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:16,677 INFO L93 Difference]: Finished difference Result 21927 states and 27451 transitions. [2021-11-06 19:00:16,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:16,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-06 19:00:16,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:16,719 INFO L225 Difference]: With dead ends: 21927 [2021-11-06 19:00:16,720 INFO L226 Difference]: Without dead ends: 10339 [2021-11-06 19:00:16,741 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 19:00:16,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10339 states. [2021-11-06 19:00:17,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10339 to 10257. [2021-11-06 19:00:17,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10257 states, 10213 states have (on average 1.2596690492509546) internal successors, (12865), 10256 states have internal predecessors, (12865), 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 19:00:17,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10257 states to 10257 states and 12865 transitions. [2021-11-06 19:00:17,123 INFO L78 Accepts]: Start accepts. Automaton has 10257 states and 12865 transitions. Word has length 57 [2021-11-06 19:00:17,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:17,123 INFO L470 AbstractCegarLoop]: Abstraction has 10257 states and 12865 transitions. [2021-11-06 19:00:17,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 19:00:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 10257 states and 12865 transitions. [2021-11-06 19:00:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 19:00:17,125 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:17,125 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] [2021-11-06 19:00:17,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:00:17,126 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:17,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:17,127 INFO L85 PathProgramCache]: Analyzing trace with hash -465593213, now seen corresponding path program 1 times [2021-11-06 19:00:17,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:17,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420671176] [2021-11-06 19:00:17,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:17,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:17,225 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 19:00:17,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:17,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420671176] [2021-11-06 19:00:17,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420671176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:17,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:17,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:17,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619097132] [2021-11-06 19:00:17,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:17,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:17,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:17,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:17,228 INFO L87 Difference]: Start difference. First operand 10257 states and 12865 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 19:00:18,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:18,083 INFO L93 Difference]: Finished difference Result 24003 states and 30042 transitions. [2021-11-06 19:00:18,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:18,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-11-06 19:00:18,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:18,115 INFO L225 Difference]: With dead ends: 24003 [2021-11-06 19:00:18,115 INFO L226 Difference]: Without dead ends: 13814 [2021-11-06 19:00:18,135 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 19:00:18,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13814 states. [2021-11-06 19:00:18,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13814 to 13369. [2021-11-06 19:00:18,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13369 states, 13325 states have (on average 1.255234521575985) internal successors, (16726), 13368 states have internal predecessors, (16726), 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 19:00:18,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13369 states to 13369 states and 16726 transitions. [2021-11-06 19:00:18,431 INFO L78 Accepts]: Start accepts. Automaton has 13369 states and 16726 transitions. Word has length 61 [2021-11-06 19:00:18,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:18,431 INFO L470 AbstractCegarLoop]: Abstraction has 13369 states and 16726 transitions. [2021-11-06 19:00:18,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 19:00:18,432 INFO L276 IsEmpty]: Start isEmpty. Operand 13369 states and 16726 transitions. [2021-11-06 19:00:18,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 19:00:18,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:18,433 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] [2021-11-06 19:00:18,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:00:18,433 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:18,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:18,434 INFO L85 PathProgramCache]: Analyzing trace with hash 451869666, now seen corresponding path program 1 times [2021-11-06 19:00:18,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:18,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110068034] [2021-11-06 19:00:18,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:18,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:18,551 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 19:00:18,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:18,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110068034] [2021-11-06 19:00:18,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110068034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:18,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:18,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:18,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925151440] [2021-11-06 19:00:18,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:18,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:18,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:18,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:18,555 INFO L87 Difference]: Start difference. First operand 13369 states and 16726 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 19:00:19,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:19,818 INFO L93 Difference]: Finished difference Result 39403 states and 49397 transitions. [2021-11-06 19:00:19,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:19,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-11-06 19:00:19,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:19,874 INFO L225 Difference]: With dead ends: 39403 [2021-11-06 19:00:19,875 INFO L226 Difference]: Without dead ends: 26165 [2021-11-06 19:00:19,901 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 19:00:19,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26165 states. [2021-11-06 19:00:20,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26165 to 26149. [2021-11-06 19:00:20,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26149 states, 26105 states have (on average 1.255468301091745) internal successors, (32774), 26148 states have internal predecessors, (32774), 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 19:00:20,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26149 states to 26149 states and 32774 transitions. [2021-11-06 19:00:20,373 INFO L78 Accepts]: Start accepts. Automaton has 26149 states and 32774 transitions. Word has length 71 [2021-11-06 19:00:20,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:20,374 INFO L470 AbstractCegarLoop]: Abstraction has 26149 states and 32774 transitions. [2021-11-06 19:00:20,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 19:00:20,377 INFO L276 IsEmpty]: Start isEmpty. Operand 26149 states and 32774 transitions. [2021-11-06 19:00:20,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 19:00:20,378 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:20,379 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] [2021-11-06 19:00:20,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:00:20,379 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:20,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:20,380 INFO L85 PathProgramCache]: Analyzing trace with hash -827994012, now seen corresponding path program 1 times [2021-11-06 19:00:20,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:20,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736242447] [2021-11-06 19:00:20,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:20,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:20,465 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 19:00:20,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:20,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736242447] [2021-11-06 19:00:20,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736242447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:20,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:20,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:20,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770701511] [2021-11-06 19:00:20,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:20,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:20,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:20,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:20,467 INFO L87 Difference]: Start difference. First operand 26149 states and 32774 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 19:00:21,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:21,369 INFO L93 Difference]: Finished difference Result 64971 states and 81509 transitions. [2021-11-06 19:00:21,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:21,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-11-06 19:00:21,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:21,461 INFO L225 Difference]: With dead ends: 64971 [2021-11-06 19:00:21,461 INFO L226 Difference]: Without dead ends: 38953 [2021-11-06 19:00:21,498 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 19:00:21,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38953 states. [2021-11-06 19:00:22,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38953 to 38888. [2021-11-06 19:00:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38888 states, 38844 states have (on average 1.2558181443723613) internal successors, (48781), 38887 states have internal predecessors, (48781), 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 19:00:22,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38888 states to 38888 states and 48781 transitions. [2021-11-06 19:00:22,138 INFO L78 Accepts]: Start accepts. Automaton has 38888 states and 48781 transitions. Word has length 71 [2021-11-06 19:00:22,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:22,139 INFO L470 AbstractCegarLoop]: Abstraction has 38888 states and 48781 transitions. [2021-11-06 19:00:22,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 19:00:22,139 INFO L276 IsEmpty]: Start isEmpty. Operand 38888 states and 48781 transitions. [2021-11-06 19:00:22,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 19:00:22,140 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:22,140 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] [2021-11-06 19:00:22,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:00:22,141 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:22,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:22,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1803764864, now seen corresponding path program 1 times [2021-11-06 19:00:22,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:22,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185182057] [2021-11-06 19:00:22,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:22,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:22,266 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 19:00:22,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:22,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185182057] [2021-11-06 19:00:22,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185182057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:22,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:22,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:22,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905605304] [2021-11-06 19:00:22,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:22,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:22,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:22,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:22,269 INFO L87 Difference]: Start difference. First operand 38888 states and 48781 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:22,829 INFO L93 Difference]: Finished difference Result 38888 states and 48781 transitions. [2021-11-06 19:00:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:22,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-06 19:00:22,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:22,894 INFO L225 Difference]: With dead ends: 38888 [2021-11-06 19:00:22,895 INFO L226 Difference]: Without dead ends: 38882 [2021-11-06 19:00:22,911 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 19:00:22,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38882 states. [2021-11-06 19:00:23,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38882 to 38882. [2021-11-06 19:00:23,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38882 states, 38841 states have (on average 1.2557606652763833) internal successors, (48775), 38881 states have internal predecessors, (48775), 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 19:00:23,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38882 states to 38882 states and 48775 transitions. [2021-11-06 19:00:23,574 INFO L78 Accepts]: Start accepts. Automaton has 38882 states and 48775 transitions. Word has length 72 [2021-11-06 19:00:23,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:23,575 INFO L470 AbstractCegarLoop]: Abstraction has 38882 states and 48775 transitions. [2021-11-06 19:00:23,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand 38882 states and 48775 transitions. [2021-11-06 19:00:23,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 19:00:23,576 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:23,576 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] [2021-11-06 19:00:23,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 19:00:23,577 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:23,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:23,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1748607325, now seen corresponding path program 1 times [2021-11-06 19:00:23,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:23,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303407171] [2021-11-06 19:00:23,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:23,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:23,784 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 19:00:23,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:23,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303407171] [2021-11-06 19:00:23,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303407171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:23,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:23,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:23,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742565882] [2021-11-06 19:00:23,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:23,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:23,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:23,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:23,786 INFO L87 Difference]: Start difference. First operand 38882 states and 48775 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 19:00:24,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:24,425 INFO L93 Difference]: Finished difference Result 38882 states and 48775 transitions. [2021-11-06 19:00:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:24,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 74 [2021-11-06 19:00:24,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:24,496 INFO L225 Difference]: With dead ends: 38882 [2021-11-06 19:00:24,497 INFO L226 Difference]: Without dead ends: 38876 [2021-11-06 19:00:24,517 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 19:00:24,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38876 states. [2021-11-06 19:00:25,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38876 to 38876. [2021-11-06 19:00:25,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38876 states, 38838 states have (on average 1.255703177300582) internal successors, (48769), 38875 states have internal predecessors, (48769), 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 19:00:25,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38876 states to 38876 states and 48769 transitions. [2021-11-06 19:00:25,443 INFO L78 Accepts]: Start accepts. Automaton has 38876 states and 48769 transitions. Word has length 74 [2021-11-06 19:00:25,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:25,443 INFO L470 AbstractCegarLoop]: Abstraction has 38876 states and 48769 transitions. [2021-11-06 19:00:25,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 19:00:25,444 INFO L276 IsEmpty]: Start isEmpty. Operand 38876 states and 48769 transitions. [2021-11-06 19:00:25,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 19:00:25,445 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:25,445 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] [2021-11-06 19:00:25,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 19:00:25,445 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:25,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:25,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1079280314, now seen corresponding path program 1 times [2021-11-06 19:00:25,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:25,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605061170] [2021-11-06 19:00:25,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:25,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:25,547 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 19:00:25,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:25,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605061170] [2021-11-06 19:00:25,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605061170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:25,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:25,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:25,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289187583] [2021-11-06 19:00:25,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:25,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:25,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:25,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:25,549 INFO L87 Difference]: Start difference. First operand 38876 states and 48769 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:26,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:26,195 INFO L93 Difference]: Finished difference Result 38876 states and 48769 transitions. [2021-11-06 19:00:26,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:26,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-06 19:00:26,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:26,249 INFO L225 Difference]: With dead ends: 38876 [2021-11-06 19:00:26,250 INFO L226 Difference]: Without dead ends: 38870 [2021-11-06 19:00:26,264 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 19:00:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38870 states. [2021-11-06 19:00:26,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38870 to 38870. [2021-11-06 19:00:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38870 states, 38835 states have (on average 1.2556456804428995) internal successors, (48763), 38869 states have internal predecessors, (48763), 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 19:00:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38870 states to 38870 states and 48763 transitions. [2021-11-06 19:00:27,058 INFO L78 Accepts]: Start accepts. Automaton has 38870 states and 48763 transitions. Word has length 76 [2021-11-06 19:00:27,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:27,058 INFO L470 AbstractCegarLoop]: Abstraction has 38870 states and 48763 transitions. [2021-11-06 19:00:27,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:27,059 INFO L276 IsEmpty]: Start isEmpty. Operand 38870 states and 48763 transitions. [2021-11-06 19:00:27,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 19:00:27,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:27,062 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] [2021-11-06 19:00:27,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 19:00:27,063 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:27,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:27,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2101116823, now seen corresponding path program 1 times [2021-11-06 19:00:27,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:27,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125848617] [2021-11-06 19:00:27,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:27,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:27,191 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 19:00:27,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:27,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125848617] [2021-11-06 19:00:27,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125848617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:27,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:27,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:27,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616558151] [2021-11-06 19:00:27,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:27,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:27,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:27,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:27,197 INFO L87 Difference]: Start difference. First operand 38870 states and 48763 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:27,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:27,909 INFO L93 Difference]: Finished difference Result 38870 states and 48763 transitions. [2021-11-06 19:00:27,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:27,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-06 19:00:27,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:27,970 INFO L225 Difference]: With dead ends: 38870 [2021-11-06 19:00:27,971 INFO L226 Difference]: Without dead ends: 38864 [2021-11-06 19:00:27,989 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 19:00:28,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38864 states. [2021-11-06 19:00:28,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38864 to 38864. [2021-11-06 19:00:28,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38864 states, 38832 states have (on average 1.2555881747012774) internal successors, (48757), 38863 states have internal predecessors, (48757), 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 19:00:28,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38864 states to 38864 states and 48757 transitions. [2021-11-06 19:00:28,812 INFO L78 Accepts]: Start accepts. Automaton has 38864 states and 48757 transitions. Word has length 78 [2021-11-06 19:00:28,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:28,812 INFO L470 AbstractCegarLoop]: Abstraction has 38864 states and 48757 transitions. [2021-11-06 19:00:28,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:28,812 INFO L276 IsEmpty]: Start isEmpty. Operand 38864 states and 48757 transitions. [2021-11-06 19:00:28,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 19:00:28,814 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:28,814 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] [2021-11-06 19:00:28,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 19:00:28,814 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:28,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:28,815 INFO L85 PathProgramCache]: Analyzing trace with hash -538490868, now seen corresponding path program 1 times [2021-11-06 19:00:28,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:28,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127310539] [2021-11-06 19:00:28,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:28,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:28,973 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 19:00:28,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:28,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127310539] [2021-11-06 19:00:28,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127310539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:28,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:28,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:28,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164257158] [2021-11-06 19:00:28,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:28,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:28,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:28,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:28,976 INFO L87 Difference]: Start difference. First operand 38864 states and 48757 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 19:00:29,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:29,699 INFO L93 Difference]: Finished difference Result 38864 states and 48757 transitions. [2021-11-06 19:00:29,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:29,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 80 [2021-11-06 19:00:29,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:29,761 INFO L225 Difference]: With dead ends: 38864 [2021-11-06 19:00:29,762 INFO L226 Difference]: Without dead ends: 38858 [2021-11-06 19:00:29,781 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 19:00:29,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38858 states. [2021-11-06 19:00:30,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38858 to 38858. [2021-11-06 19:00:30,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38858 states, 38829 states have (on average 1.2555306600736562) internal successors, (48751), 38857 states have internal predecessors, (48751), 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 19:00:30,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38858 states to 38858 states and 48751 transitions. [2021-11-06 19:00:30,619 INFO L78 Accepts]: Start accepts. Automaton has 38858 states and 48751 transitions. Word has length 80 [2021-11-06 19:00:30,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:30,620 INFO L470 AbstractCegarLoop]: Abstraction has 38858 states and 48751 transitions. [2021-11-06 19:00:30,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 19:00:30,620 INFO L276 IsEmpty]: Start isEmpty. Operand 38858 states and 48751 transitions. [2021-11-06 19:00:30,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 19:00:30,622 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:30,622 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] [2021-11-06 19:00:30,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 19:00:30,622 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:30,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:30,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2093501393, now seen corresponding path program 1 times [2021-11-06 19:00:30,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:30,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086082561] [2021-11-06 19:00:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:30,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:30,837 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 19:00:30,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:30,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086082561] [2021-11-06 19:00:30,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086082561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:30,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:30,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:30,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380864441] [2021-11-06 19:00:30,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:30,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:30,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:30,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:30,841 INFO L87 Difference]: Start difference. First operand 38858 states and 48751 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 19:00:31,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:31,761 INFO L93 Difference]: Finished difference Result 38858 states and 48751 transitions. [2021-11-06 19:00:31,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:31,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 82 [2021-11-06 19:00:31,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:31,821 INFO L225 Difference]: With dead ends: 38858 [2021-11-06 19:00:31,821 INFO L226 Difference]: Without dead ends: 38852 [2021-11-06 19:00:31,838 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 19:00:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38852 states. [2021-11-06 19:00:32,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38852 to 38852. [2021-11-06 19:00:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38852 states, 38826 states have (on average 1.2554731365579765) internal successors, (48745), 38851 states have internal predecessors, (48745), 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 19:00:32,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38852 states to 38852 states and 48745 transitions. [2021-11-06 19:00:32,721 INFO L78 Accepts]: Start accepts. Automaton has 38852 states and 48745 transitions. Word has length 82 [2021-11-06 19:00:32,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:32,722 INFO L470 AbstractCegarLoop]: Abstraction has 38852 states and 48745 transitions. [2021-11-06 19:00:32,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 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 19:00:32,722 INFO L276 IsEmpty]: Start isEmpty. Operand 38852 states and 48745 transitions. [2021-11-06 19:00:32,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-06 19:00:32,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:32,724 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] [2021-11-06 19:00:32,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 19:00:32,724 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:32,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:32,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1809996590, now seen corresponding path program 1 times [2021-11-06 19:00:32,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:32,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003214412] [2021-11-06 19:00:32,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:32,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:32,833 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 19:00:32,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:32,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003214412] [2021-11-06 19:00:32,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003214412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:32,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:32,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:32,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462044311] [2021-11-06 19:00:32,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:32,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:32,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:32,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:32,835 INFO L87 Difference]: Start difference. First operand 38852 states and 48745 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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 19:00:33,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:33,696 INFO L93 Difference]: Finished difference Result 38852 states and 48745 transitions. [2021-11-06 19:00:33,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:33,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-06 19:00:33,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:33,757 INFO L225 Difference]: With dead ends: 38852 [2021-11-06 19:00:33,757 INFO L226 Difference]: Without dead ends: 38846 [2021-11-06 19:00:33,774 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 19:00:33,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38846 states. [2021-11-06 19:00:34,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38846 to 38846. [2021-11-06 19:00:34,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38846 states, 38823 states have (on average 1.2554156041521778) internal successors, (48739), 38845 states have internal predecessors, (48739), 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 19:00:34,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38846 states to 38846 states and 48739 transitions. [2021-11-06 19:00:34,668 INFO L78 Accepts]: Start accepts. Automaton has 38846 states and 48739 transitions. Word has length 84 [2021-11-06 19:00:34,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:34,669 INFO L470 AbstractCegarLoop]: Abstraction has 38846 states and 48739 transitions. [2021-11-06 19:00:34,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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 19:00:34,669 INFO L276 IsEmpty]: Start isEmpty. Operand 38846 states and 48739 transitions. [2021-11-06 19:00:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 19:00:34,671 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:34,671 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] [2021-11-06 19:00:34,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 19:00:34,672 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:34,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:34,672 INFO L85 PathProgramCache]: Analyzing trace with hash 55179765, now seen corresponding path program 1 times [2021-11-06 19:00:34,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:34,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860640223] [2021-11-06 19:00:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:34,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:34,880 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 19:00:34,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:34,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860640223] [2021-11-06 19:00:34,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860640223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:34,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:34,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:34,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502220405] [2021-11-06 19:00:34,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:34,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:34,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:34,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:34,882 INFO L87 Difference]: Start difference. First operand 38846 states and 48739 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 19:00:35,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:35,647 INFO L93 Difference]: Finished difference Result 38846 states and 48739 transitions. [2021-11-06 19:00:35,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:35,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 86 [2021-11-06 19:00:35,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:35,719 INFO L225 Difference]: With dead ends: 38846 [2021-11-06 19:00:35,719 INFO L226 Difference]: Without dead ends: 38840 [2021-11-06 19:00:35,741 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 19:00:35,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38840 states. [2021-11-06 19:00:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38840 to 38840. [2021-11-06 19:00:36,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38840 states, 38820 states have (on average 1.255358062854199) internal successors, (48733), 38839 states have internal predecessors, (48733), 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 19:00:36,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38840 states to 38840 states and 48733 transitions. [2021-11-06 19:00:36,951 INFO L78 Accepts]: Start accepts. Automaton has 38840 states and 48733 transitions. Word has length 86 [2021-11-06 19:00:36,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:36,951 INFO L470 AbstractCegarLoop]: Abstraction has 38840 states and 48733 transitions. [2021-11-06 19:00:36,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 19:00:36,952 INFO L276 IsEmpty]: Start isEmpty. Operand 38840 states and 48733 transitions. [2021-11-06 19:00:36,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-06 19:00:36,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:36,954 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] [2021-11-06 19:00:36,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 19:00:36,954 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:36,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:36,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1488294808, now seen corresponding path program 1 times [2021-11-06 19:00:36,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:36,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222717431] [2021-11-06 19:00:36,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:36,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:37,072 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 19:00:37,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:37,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222717431] [2021-11-06 19:00:37,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222717431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:37,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:37,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:37,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921455505] [2021-11-06 19:00:37,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:37,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:37,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:37,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:37,074 INFO L87 Difference]: Start difference. First operand 38840 states and 48733 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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 19:00:37,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:37,913 INFO L93 Difference]: Finished difference Result 38840 states and 48733 transitions. [2021-11-06 19:00:37,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:37,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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 88 [2021-11-06 19:00:37,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:37,979 INFO L225 Difference]: With dead ends: 38840 [2021-11-06 19:00:37,980 INFO L226 Difference]: Without dead ends: 38834 [2021-11-06 19:00:37,998 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 19:00:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38834 states. [2021-11-06 19:00:39,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38834 to 38834. [2021-11-06 19:00:39,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38834 states, 38817 states have (on average 1.255300512661978) internal successors, (48727), 38833 states have internal predecessors, (48727), 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 19:00:39,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38834 states to 38834 states and 48727 transitions. [2021-11-06 19:00:39,441 INFO L78 Accepts]: Start accepts. Automaton has 38834 states and 48727 transitions. Word has length 88 [2021-11-06 19:00:39,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:39,441 INFO L470 AbstractCegarLoop]: Abstraction has 38834 states and 48727 transitions. [2021-11-06 19:00:39,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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 19:00:39,443 INFO L276 IsEmpty]: Start isEmpty. Operand 38834 states and 48727 transitions. [2021-11-06 19:00:39,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 19:00:39,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:39,446 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:00:39,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 19:00:39,447 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:39,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2057427073, now seen corresponding path program 1 times [2021-11-06 19:00:39,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:39,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138127443] [2021-11-06 19:00:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:39,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:39,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:00:39,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:39,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138127443] [2021-11-06 19:00:39,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138127443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:39,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:39,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:39,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118869164] [2021-11-06 19:00:39,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:39,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:39,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:39,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:39,546 INFO L87 Difference]: Start difference. First operand 38834 states and 48727 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 19:00:41,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:41,334 INFO L93 Difference]: Finished difference Result 86619 states and 109040 transitions. [2021-11-06 19:00:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:41,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2021-11-06 19:00:41,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:41,412 INFO L225 Difference]: With dead ends: 86619 [2021-11-06 19:00:41,413 INFO L226 Difference]: Without dead ends: 47916 [2021-11-06 19:00:41,475 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 19:00:41,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47916 states. [2021-11-06 19:00:42,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47916 to 47837. [2021-11-06 19:00:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47837 states, 47820 states have (on average 1.25913843580092) internal successors, (60212), 47836 states have internal predecessors, (60212), 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 19:00:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47837 states to 47837 states and 60212 transitions. [2021-11-06 19:00:43,090 INFO L78 Accepts]: Start accepts. Automaton has 47837 states and 60212 transitions. Word has length 89 [2021-11-06 19:00:43,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:43,091 INFO L470 AbstractCegarLoop]: Abstraction has 47837 states and 60212 transitions. [2021-11-06 19:00:43,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 19:00:43,091 INFO L276 IsEmpty]: Start isEmpty. Operand 47837 states and 60212 transitions. [2021-11-06 19:00:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 19:00:43,092 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:43,092 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] [2021-11-06 19:00:43,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 19:00:43,093 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:43,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:43,094 INFO L85 PathProgramCache]: Analyzing trace with hash 27349435, now seen corresponding path program 1 times [2021-11-06 19:00:43,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:43,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800467563] [2021-11-06 19:00:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:43,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:43,202 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 19:00:43,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:43,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800467563] [2021-11-06 19:00:43,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800467563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:43,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:43,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:43,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119693400] [2021-11-06 19:00:43,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:43,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:43,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:43,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:43,205 INFO L87 Difference]: Start difference. First operand 47837 states and 60212 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 19:00:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:44,624 INFO L93 Difference]: Finished difference Result 47837 states and 60212 transitions. [2021-11-06 19:00:44,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:44,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 90 [2021-11-06 19:00:44,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:44,692 INFO L225 Difference]: With dead ends: 47837 [2021-11-06 19:00:44,692 INFO L226 Difference]: Without dead ends: 47831 [2021-11-06 19:00:44,707 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 19:00:44,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47831 states. [2021-11-06 19:00:46,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47831 to 47831. [2021-11-06 19:00:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47831 states, 47817 states have (on average 1.2590919547441286) internal successors, (60206), 47830 states have internal predecessors, (60206), 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 19:00:46,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47831 states to 47831 states and 60206 transitions. [2021-11-06 19:00:46,169 INFO L78 Accepts]: Start accepts. Automaton has 47831 states and 60206 transitions. Word has length 90 [2021-11-06 19:00:46,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:46,169 INFO L470 AbstractCegarLoop]: Abstraction has 47831 states and 60206 transitions. [2021-11-06 19:00:46,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 19:00:46,169 INFO L276 IsEmpty]: Start isEmpty. Operand 47831 states and 60206 transitions. [2021-11-06 19:00:46,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 19:00:46,171 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:46,171 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] [2021-11-06 19:00:46,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 19:00:46,171 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:46,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:46,172 INFO L85 PathProgramCache]: Analyzing trace with hash 513152094, now seen corresponding path program 1 times [2021-11-06 19:00:46,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:46,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760187781] [2021-11-06 19:00:46,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:46,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:46,261 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 19:00:46,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:46,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760187781] [2021-11-06 19:00:46,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760187781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:46,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:46,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:46,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772160129] [2021-11-06 19:00:46,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:46,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:46,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:46,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:46,263 INFO L87 Difference]: Start difference. First operand 47831 states and 60206 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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 19:00:47,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:47,891 INFO L93 Difference]: Finished difference Result 47831 states and 60206 transitions. [2021-11-06 19:00:47,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:47,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-06 19:00:47,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:47,962 INFO L225 Difference]: With dead ends: 47831 [2021-11-06 19:00:47,962 INFO L226 Difference]: Without dead ends: 47825 [2021-11-06 19:00:47,981 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 19:00:48,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47825 states. [2021-11-06 19:00:49,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47825 to 47825. [2021-11-06 19:00:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47825 states, 47814 states have (on average 1.2590454678546033) internal successors, (60200), 47824 states have internal predecessors, (60200), 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 19:00:49,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47825 states to 47825 states and 60200 transitions. [2021-11-06 19:00:49,466 INFO L78 Accepts]: Start accepts. Automaton has 47825 states and 60200 transitions. Word has length 92 [2021-11-06 19:00:49,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:49,466 INFO L470 AbstractCegarLoop]: Abstraction has 47825 states and 60200 transitions. [2021-11-06 19:00:49,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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 19:00:49,466 INFO L276 IsEmpty]: Start isEmpty. Operand 47825 states and 60200 transitions. [2021-11-06 19:00:49,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 19:00:49,467 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:49,467 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] [2021-11-06 19:00:49,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 19:00:49,468 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:49,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:49,468 INFO L85 PathProgramCache]: Analyzing trace with hash -781927551, now seen corresponding path program 1 times [2021-11-06 19:00:49,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:49,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566693297] [2021-11-06 19:00:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:49,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:49,687 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 19:00:49,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:49,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566693297] [2021-11-06 19:00:49,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566693297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:49,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:49,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:49,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951373936] [2021-11-06 19:00:49,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:49,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:49,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:49,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:49,690 INFO L87 Difference]: Start difference. First operand 47825 states and 60200 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 19:00:51,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:51,221 INFO L93 Difference]: Finished difference Result 47825 states and 60200 transitions. [2021-11-06 19:00:51,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:51,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 94 [2021-11-06 19:00:51,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:51,300 INFO L225 Difference]: With dead ends: 47825 [2021-11-06 19:00:51,301 INFO L226 Difference]: Without dead ends: 47660 [2021-11-06 19:00:51,323 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 19:00:51,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47660 states. [2021-11-06 19:00:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47660 to 47660. [2021-11-06 19:00:52,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47660 states, 47652 states have (on average 1.2585201040879712) internal successors, (59971), 47659 states have internal predecessors, (59971), 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 19:00:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47660 states to 47660 states and 59971 transitions. [2021-11-06 19:00:53,065 INFO L78 Accepts]: Start accepts. Automaton has 47660 states and 59971 transitions. Word has length 94 [2021-11-06 19:00:53,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:53,065 INFO L470 AbstractCegarLoop]: Abstraction has 47660 states and 59971 transitions. [2021-11-06 19:00:53,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 19:00:53,065 INFO L276 IsEmpty]: Start isEmpty. Operand 47660 states and 59971 transitions. [2021-11-06 19:00:53,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-06 19:00:53,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:53,068 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-06 19:00:53,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 19:00:53,069 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-06 19:00:53,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:53,069 INFO L85 PathProgramCache]: Analyzing trace with hash -386111282, now seen corresponding path program 1 times [2021-11-06 19:00:53,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:53,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219530011] [2021-11-06 19:00:53,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:53,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 19:00:53,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:53,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219530011] [2021-11-06 19:00:53,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219530011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:53,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:53,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:53,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295858976] [2021-11-06 19:00:53,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:53,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:53,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:53,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:53,158 INFO L87 Difference]: Start difference. First operand 47660 states and 59971 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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)