./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-dlink-sundance.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-dlink-sundance.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 d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 17:26:42,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 17:26:42,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 17:26:42,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 17:26:42,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 17:26:42,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 17:26:42,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 17:26:42,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 17:26:42,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 17:26:42,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 17:26:42,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 17:26:42,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 17:26:42,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 17:26:42,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 17:26:42,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 17:26:42,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 17:26:42,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 17:26:42,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 17:26:42,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 17:26:42,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 17:26:42,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 17:26:42,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 17:26:42,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 17:26:42,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 17:26:42,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 17:26:42,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 17:26:42,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 17:26:42,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 17:26:42,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 17:26:42,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 17:26:42,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 17:26:42,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 17:26:42,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 17:26:42,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 17:26:42,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 17:26:42,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 17:26:42,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 17:26:42,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 17:26:42,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 17:26:42,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 17:26:42,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 17:26:42,367 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 17:26:42,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 17:26:42,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 17:26:42,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 17:26:42,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 17:26:42,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 17:26:42,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 17:26:42,404 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 17:26:42,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 17:26:42,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 17:26:42,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 17:26:42,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 17:26:42,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 17:26:42,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 17:26:42,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 17:26:42,406 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 17:26:42,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 17:26:42,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 17:26:42,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 17:26:42,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 17:26:42,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:26:42,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 17:26:42,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 17:26:42,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 17:26:42,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 17:26:42,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 17:26:42,408 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 17:26:42,408 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 17:26:42,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 17:26:42,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 17:26:42,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 [2021-11-07 17:26:42,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 17:26:42,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 17:26:42,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 17:26:42,624 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 17:26:42,625 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 17:26:42,626 INFO L432 ainManager$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-dlink-sundance.cil.i [2021-11-07 17:26:42,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/854586a57/f30384383ecf431b977117a97f11f3cd/FLAG0b056b3a4 [2021-11-07 17:26:43,313 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 17:26:43,314 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-dlink-sundance.cil.i [2021-11-07 17:26:43,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/854586a57/f30384383ecf431b977117a97f11f3cd/FLAG0b056b3a4 [2021-11-07 17:26:43,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/854586a57/f30384383ecf431b977117a97f11f3cd [2021-11-07 17:26:43,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 17:26:43,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 17:26:43,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 17:26:43,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 17:26:43,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 17:26:43,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:26:43" (1/1) ... [2021-11-07 17:26:43,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b2cf61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:43, skipping insertion in model container [2021-11-07 17:26:43,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:26:43" (1/1) ... [2021-11-07 17:26:43,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 17:26:43,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 17:26:45,619 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-dlink-sundance.cil.i[349228,349241] [2021-11-07 17:26:45,622 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-dlink-sundance.cil.i[349397,349410] [2021-11-07 17:26:45,623 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-dlink-sundance.cil.i[349564,349577] [2021-11-07 17:26:45,623 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-dlink-sundance.cil.i[349732,349745] [2021-11-07 17:26:45,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:26:45,705 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 17:26:46,037 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2021-11-07 17:26:46,038 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-dlink-sundance.cil.i[349397,349410] [2021-11-07 17:26:46,039 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2021-11-07 17:26:46,039 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2021-11-07 17:26:46,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:26:46,248 INFO L208 MainTranslator]: Completed translation [2021-11-07 17:26:46,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:46 WrapperNode [2021-11-07 17:26:46,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 17:26:46,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 17:26:46,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 17:26:46,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 17:26:46,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:46" (1/1) ... [2021-11-07 17:26:46,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:46" (1/1) ... [2021-11-07 17:26:46,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 17:26:46,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 17:26:46,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 17:26:46,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 17:26:46,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:46" (1/1) ... [2021-11-07 17:26:46,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:46" (1/1) ... [2021-11-07 17:26:47,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:46" (1/1) ... [2021-11-07 17:26:47,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:46" (1/1) ... [2021-11-07 17:26:47,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:46" (1/1) ... [2021-11-07 17:26:47,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:46" (1/1) ... [2021-11-07 17:26:47,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:46" (1/1) ... [2021-11-07 17:26:47,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 17:26:47,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 17:26:47,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 17:26:47,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 17:26:47,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:46" (1/1) ... [2021-11-07 17:26:47,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:26:47,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 17:26:47,809 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) [2021-11-07 17:26:47,875 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 [2021-11-07 17:26:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 17:26:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 17:26:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 17:26:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 17:26:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 17:26:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 17:26:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 17:26:47,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 17:26:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 17:26:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 17:26:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 17:26:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 17:26:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 17:26:47,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 17:26:47,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 17:28:20,120 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 17:28:20,120 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 17:28:20,121 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 17:28:20,121 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 17:28:20,122 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 17:28:20,122 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 17:28:20,155 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 17:28:20,155 INFO L299 CfgBuilder]: Removed 4962 assume(true) statements. [2021-11-07 17:28:20,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:28:20 BoogieIcfgContainer [2021-11-07 17:28:20,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 17:28:20,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 17:28:20,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 17:28:20,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 17:28:20,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:26:43" (1/3) ... [2021-11-07 17:28:20,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103c3b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:28:20, skipping insertion in model container [2021-11-07 17:28:20,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:26:46" (2/3) ... [2021-11-07 17:28:20,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103c3b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:28:20, skipping insertion in model container [2021-11-07 17:28:20,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:28:20" (3/3) ... [2021-11-07 17:28:20,169 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-07 17:28:20,174 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 17:28:20,174 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2021-11-07 17:28:20,229 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 17:28:20,234 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 [2021-11-07 17:28:20,234 INFO L340 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2021-11-07 17:28:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 4352 states, 4273 states have (on average 1.3213199157500586) internal successors, (5646), 4351 states have internal predecessors, (5646), 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) [2021-11-07 17:28:20,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 17:28:20,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:20,316 INFO L514 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] [2021-11-07 17:28:20,317 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-07 17:28:20,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:20,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1806629518, now seen corresponding path program 1 times [2021-11-07 17:28:20,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:20,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693492977] [2021-11-07 17:28:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:20,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:21,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:28:21,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:21,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693492977] [2021-11-07 17:28:21,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693492977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:21,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:21,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:21,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910494348] [2021-11-07 17:28:21,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:21,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:28:21,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:21,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:28:21,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:21,217 INFO L87 Difference]: Start difference. First operand has 4352 states, 4273 states have (on average 1.3213199157500586) internal successors, (5646), 4351 states have internal predecessors, (5646), 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 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) [2021-11-07 17:28:23,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:28:23,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:23,941 INFO L93 Difference]: Finished difference Result 12470 states and 16187 transitions. [2021-11-07 17:28:23,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:28:23,949 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 [2021-11-07 17:28:23,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:24,005 INFO L225 Difference]: With dead ends: 12470 [2021-11-07 17:28:24,005 INFO L226 Difference]: Without dead ends: 7938 [2021-11-07 17:28:24,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:24,029 INFO L933 BasicCegarLoop]: 5441 mSDtfsCounter, 5059 mSDsluCounter, 5393 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2222.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5059 SdHoareTripleChecker+Valid, 10834 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.02ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2357.79ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:24,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5059 Valid, 10834 Invalid, 34 Unknown, 0 Unchecked, 35.02ms Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2357.79ms Time] [2021-11-07 17:28:24,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2021-11-07 17:28:24,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 7858. [2021-11-07 17:28:24,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7858 states, 7779 states have (on average 1.2610875433860393) internal successors, (9810), 7857 states have internal predecessors, (9810), 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) [2021-11-07 17:28:24,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7858 states to 7858 states and 9810 transitions. [2021-11-07 17:28:24,333 INFO L78 Accepts]: Start accepts. Automaton has 7858 states and 9810 transitions. Word has length 57 [2021-11-07 17:28:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:24,334 INFO L470 AbstractCegarLoop]: Abstraction has 7858 states and 9810 transitions. [2021-11-07 17:28:24,334 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) [2021-11-07 17:28:24,336 INFO L276 IsEmpty]: Start isEmpty. Operand 7858 states and 9810 transitions. [2021-11-07 17:28:24,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 17:28:24,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:24,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:28:24,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 17:28:24,346 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-07 17:28:24,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:24,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1518682448, now seen corresponding path program 1 times [2021-11-07 17:28:24,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:24,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486269485] [2021-11-07 17:28:24,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:24,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:28:24,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:24,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486269485] [2021-11-07 17:28:24,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486269485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:24,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:24,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:24,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338262122] [2021-11-07 17:28:24,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:24,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:28:24,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:24,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:28:24,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:24,776 INFO L87 Difference]: Start difference. First operand 7858 states and 9810 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:26,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:28:27,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:27,993 INFO L93 Difference]: Finished difference Result 21480 states and 26822 transitions. [2021-11-07 17:28:27,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:28:27,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 17:28:27,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:28,058 INFO L225 Difference]: With dead ends: 21480 [2021-11-07 17:28:28,061 INFO L226 Difference]: Without dead ends: 13730 [2021-11-07 17:28:28,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:28,084 INFO L933 BasicCegarLoop]: 5081 mSDtfsCounter, 3852 mSDsluCounter, 4912 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2707.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3852 SdHoareTripleChecker+Valid, 9993 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.93ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2887.66ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:28,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3852 Valid, 9993 Invalid, 105 Unknown, 0 Unchecked, 19.93ms Time], IncrementalHoareTripleChecker [11 Valid, 93 Invalid, 1 Unknown, 0 Unchecked, 2887.66ms Time] [2021-11-07 17:28:28,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13730 states. [2021-11-07 17:28:28,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13730 to 12996. [2021-11-07 17:28:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12996 states, 12917 states have (on average 1.262831926918015) internal successors, (16312), 12995 states have internal predecessors, (16312), 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) [2021-11-07 17:28:28,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12996 states to 12996 states and 16312 transitions. [2021-11-07 17:28:28,538 INFO L78 Accepts]: Start accepts. Automaton has 12996 states and 16312 transitions. Word has length 63 [2021-11-07 17:28:28,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:28,544 INFO L470 AbstractCegarLoop]: Abstraction has 12996 states and 16312 transitions. [2021-11-07 17:28:28,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:28,545 INFO L276 IsEmpty]: Start isEmpty. Operand 12996 states and 16312 transitions. [2021-11-07 17:28:28,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 17:28:28,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:28,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:28:28,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 17:28:28,547 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-07 17:28:28,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash -578711267, now seen corresponding path program 1 times [2021-11-07 17:28:28,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:28,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907891139] [2021-11-07 17:28:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:28,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:28:28,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:28,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907891139] [2021-11-07 17:28:28,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907891139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:28,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:28,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:28,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822472873] [2021-11-07 17:28:28,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:28,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:28:28,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:28,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:28:28,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:28,910 INFO L87 Difference]: Start difference. First operand 12996 states and 16312 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-07 17:28:30,980 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:28:31,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:31,836 INFO L93 Difference]: Finished difference Result 36598 states and 45978 transitions. [2021-11-07 17:28:31,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:28:31,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-11-07 17:28:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:31,989 INFO L225 Difference]: With dead ends: 36598 [2021-11-07 17:28:31,990 INFO L226 Difference]: Without dead ends: 23710 [2021-11-07 17:28:32,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:32,031 INFO L933 BasicCegarLoop]: 5073 mSDtfsCounter, 4511 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2323.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4511 SdHoareTripleChecker+Valid, 9755 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.42ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2527.07ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:32,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4511 Valid, 9755 Invalid, 64 Unknown, 0 Unchecked, 13.42ms Time], IncrementalHoareTripleChecker [16 Valid, 47 Invalid, 1 Unknown, 0 Unchecked, 2527.07ms Time] [2021-11-07 17:28:32,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23710 states. [2021-11-07 17:28:32,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23710 to 22878. [2021-11-07 17:28:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22878 states, 22799 states have (on average 1.2666345015132243) internal successors, (28878), 22877 states have internal predecessors, (28878), 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) [2021-11-07 17:28:32,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22878 states to 22878 states and 28878 transitions. [2021-11-07 17:28:32,852 INFO L78 Accepts]: Start accepts. Automaton has 22878 states and 28878 transitions. Word has length 64 [2021-11-07 17:28:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:32,853 INFO L470 AbstractCegarLoop]: Abstraction has 22878 states and 28878 transitions. [2021-11-07 17:28:32,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-07 17:28:32,854 INFO L276 IsEmpty]: Start isEmpty. Operand 22878 states and 28878 transitions. [2021-11-07 17:28:32,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 17:28:32,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:32,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:28:32,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 17:28:32,856 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr65ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-07 17:28:32,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:32,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1120258482, now seen corresponding path program 1 times [2021-11-07 17:28:32,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:32,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582055580] [2021-11-07 17:28:32,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:32,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:28:33,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:33,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582055580] [2021-11-07 17:28:33,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582055580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:33,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:33,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:33,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439376045] [2021-11-07 17:28:33,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:33,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:28:33,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:33,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:28:33,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:33,148 INFO L87 Difference]: Start difference. First operand 22878 states and 28878 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) [2021-11-07 17:28:35,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:28:35,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:35,943 INFO L93 Difference]: Finished difference Result 38703 states and 48893 transitions. [2021-11-07 17:28:35,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:28:35,943 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 [2021-11-07 17:28:35,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:35,988 INFO L225 Difference]: With dead ends: 38703 [2021-11-07 17:28:35,989 INFO L226 Difference]: Without dead ends: 15933 [2021-11-07 17:28:36,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:36,035 INFO L933 BasicCegarLoop]: 6615 mSDtfsCounter, 2155 mSDsluCounter, 4928 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2400.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2155 SdHoareTripleChecker+Valid, 11543 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.47ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2511.89ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:36,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2155 Valid, 11543 Invalid, 100 Unknown, 0 Unchecked, 9.47ms Time], IncrementalHoareTripleChecker [21 Valid, 78 Invalid, 1 Unknown, 0 Unchecked, 2511.89ms Time] [2021-11-07 17:28:36,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15933 states. [2021-11-07 17:28:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15933 to 15803. [2021-11-07 17:28:36,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15803 states, 15724 states have (on average 1.2688247265326889) internal successors, (19951), 15802 states have internal predecessors, (19951), 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) [2021-11-07 17:28:36,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15803 states to 15803 states and 19951 transitions. [2021-11-07 17:28:36,612 INFO L78 Accepts]: Start accepts. Automaton has 15803 states and 19951 transitions. Word has length 71 [2021-11-07 17:28:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:36,614 INFO L470 AbstractCegarLoop]: Abstraction has 15803 states and 19951 transitions. [2021-11-07 17:28:36,614 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) [2021-11-07 17:28:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 15803 states and 19951 transitions. [2021-11-07 17:28:36,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 17:28:36,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:36,617 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:28:36,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 17:28:36,618 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-07 17:28:36,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:36,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1794554846, now seen corresponding path program 1 times [2021-11-07 17:28:36,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:36,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571908573] [2021-11-07 17:28:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:36,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:28:36,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:36,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571908573] [2021-11-07 17:28:36,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571908573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:36,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:36,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:36,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594392954] [2021-11-07 17:28:36,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:36,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:28:36,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:36,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:28:36,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:36,963 INFO L87 Difference]: Start difference. First operand 15803 states and 19951 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-11-07 17:28:39,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:28:39,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:39,558 INFO L93 Difference]: Finished difference Result 46089 states and 58300 transitions. [2021-11-07 17:28:39,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:28:39,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 [2021-11-07 17:28:39,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:39,620 INFO L225 Difference]: With dead ends: 46089 [2021-11-07 17:28:39,621 INFO L226 Difference]: Without dead ends: 30719 [2021-11-07 17:28:39,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:39,666 INFO L933 BasicCegarLoop]: 5494 mSDtfsCounter, 4756 mSDsluCounter, 5066 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2142.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4756 SdHoareTripleChecker+Valid, 10560 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.47ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2253.05ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:39,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4756 Valid, 10560 Invalid, 30 Unknown, 0 Unchecked, 8.47ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2253.05ms Time] [2021-11-07 17:28:39,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30719 states. [2021-11-07 17:28:40,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30719 to 30639. [2021-11-07 17:28:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30639 states, 30560 states have (on average 1.2696335078534031) internal successors, (38800), 30638 states have internal predecessors, (38800), 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) [2021-11-07 17:28:40,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30639 states to 30639 states and 38800 transitions. [2021-11-07 17:28:40,570 INFO L78 Accepts]: Start accepts. Automaton has 30639 states and 38800 transitions. Word has length 86 [2021-11-07 17:28:40,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:40,571 INFO L470 AbstractCegarLoop]: Abstraction has 30639 states and 38800 transitions. [2021-11-07 17:28:40,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-11-07 17:28:40,571 INFO L276 IsEmpty]: Start isEmpty. Operand 30639 states and 38800 transitions. [2021-11-07 17:28:40,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 17:28:40,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:40,573 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:28:40,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 17:28:40,574 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-07 17:28:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash 514691168, now seen corresponding path program 1 times [2021-11-07 17:28:40,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:40,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339893163] [2021-11-07 17:28:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:40,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:28:40,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:40,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339893163] [2021-11-07 17:28:40,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339893163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:40,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:40,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:40,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322301906] [2021-11-07 17:28:40,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:40,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:28:40,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:40,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:28:40,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:40,867 INFO L87 Difference]: Start difference. First operand 30639 states and 38800 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-11-07 17:28:42,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:28:43,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:43,806 INFO L93 Difference]: Finished difference Result 75769 states and 96014 transitions. [2021-11-07 17:28:43,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:28:43,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 [2021-11-07 17:28:43,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:43,883 INFO L225 Difference]: With dead ends: 75769 [2021-11-07 17:28:43,884 INFO L226 Difference]: Without dead ends: 45563 [2021-11-07 17:28:43,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:28:43,926 INFO L933 BasicCegarLoop]: 9842 mSDtfsCounter, 4806 mSDsluCounter, 5017 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2156.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4806 SdHoareTripleChecker+Valid, 14859 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.59ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2254.53ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:43,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4806 Valid, 14859 Invalid, 32 Unknown, 0 Unchecked, 8.59ms Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2254.53ms Time] [2021-11-07 17:28:43,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45563 states. [2021-11-07 17:28:44,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45563 to 45434. [2021-11-07 17:28:44,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45434 states, 45355 states have (on average 1.2701576452430823) internal successors, (57608), 45433 states have internal predecessors, (57608), 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) [2021-11-07 17:28:45,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45434 states to 45434 states and 57608 transitions. [2021-11-07 17:28:45,017 INFO L78 Accepts]: Start accepts. Automaton has 45434 states and 57608 transitions. Word has length 86 [2021-11-07 17:28:45,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:45,017 INFO L470 AbstractCegarLoop]: Abstraction has 45434 states and 57608 transitions. [2021-11-07 17:28:45,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-11-07 17:28:45,018 INFO L276 IsEmpty]: Start isEmpty. Operand 45434 states and 57608 transitions. [2021-11-07 17:28:45,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 17:28:45,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:45,024 INFO L514 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] [2021-11-07 17:28:45,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 17:28:45,025 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-07 17:28:45,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:45,025 INFO L85 PathProgramCache]: Analyzing trace with hash 496418719, now seen corresponding path program 1 times [2021-11-07 17:28:45,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:45,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309037463] [2021-11-07 17:28:45,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:45,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:28:45,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:45,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309037463] [2021-11-07 17:28:45,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309037463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:45,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:45,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:45,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799047579] [2021-11-07 17:28:45,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:45,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:28:45,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:45,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:28:45,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:28:45,409 INFO L87 Difference]: Start difference. First operand 45434 states and 57608 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-11-07 17:28:46,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:46,667 INFO L93 Difference]: Finished difference Result 45434 states and 57608 transitions. [2021-11-07 17:28:46,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:28:46,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-07 17:28:46,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:46,773 INFO L225 Difference]: With dead ends: 45434 [2021-11-07 17:28:46,773 INFO L226 Difference]: Without dead ends: 45428 [2021-11-07 17:28:46,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.86ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:28:46,803 INFO L933 BasicCegarLoop]: 5080 mSDtfsCounter, 5014 mSDsluCounter, 4975 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 394.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5014 SdHoareTripleChecker+Valid, 10055 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.32ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 425.20ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:46,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5014 Valid, 10055 Invalid, 115 Unknown, 0 Unchecked, 16.32ms Time], IncrementalHoareTripleChecker [37 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 425.20ms Time] [2021-11-07 17:28:46,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45428 states. [2021-11-07 17:28:47,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45428 to 45428. [2021-11-07 17:28:47,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45428 states, 45352 states have (on average 1.270109366731346) internal successors, (57602), 45427 states have internal predecessors, (57602), 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) [2021-11-07 17:28:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45428 states to 45428 states and 57602 transitions. [2021-11-07 17:28:48,053 INFO L78 Accepts]: Start accepts. Automaton has 45428 states and 57602 transitions. Word has length 87 [2021-11-07 17:28:48,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:48,054 INFO L470 AbstractCegarLoop]: Abstraction has 45428 states and 57602 transitions. [2021-11-07 17:28:48,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-11-07 17:28:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 45428 states and 57602 transitions. [2021-11-07 17:28:48,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 17:28:48,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:48,062 INFO L514 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] [2021-11-07 17:28:48,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 17:28:48,063 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-07 17:28:48,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:48,064 INFO L85 PathProgramCache]: Analyzing trace with hash 317170018, now seen corresponding path program 1 times [2021-11-07 17:28:48,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:48,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636282469] [2021-11-07 17:28:48,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:48,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:48,554 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:28:48,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:48,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636282469] [2021-11-07 17:28:48,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636282469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:48,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:48,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:48,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083538367] [2021-11-07 17:28:48,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:48,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:28:48,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:48,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:28:48,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:28:48,556 INFO L87 Difference]: Start difference. First operand 45428 states and 57602 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-07 17:28:49,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:49,875 INFO L93 Difference]: Finished difference Result 45428 states and 57602 transitions. [2021-11-07 17:28:49,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:28:49,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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 [2021-11-07 17:28:49,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:50,002 INFO L225 Difference]: With dead ends: 45428 [2021-11-07 17:28:50,002 INFO L226 Difference]: Without dead ends: 45422 [2021-11-07 17:28:50,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:28:50,020 INFO L933 BasicCegarLoop]: 5074 mSDtfsCounter, 5003 mSDsluCounter, 4972 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 384.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5003 SdHoareTripleChecker+Valid, 10046 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.80ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 409.50ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:50,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5003 Valid, 10046 Invalid, 115 Unknown, 0 Unchecked, 19.80ms Time], IncrementalHoareTripleChecker [40 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 409.50ms Time] [2021-11-07 17:28:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45422 states. [2021-11-07 17:28:50,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45422 to 45422. [2021-11-07 17:28:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45422 states, 45349 states have (on average 1.270061081832014) internal successors, (57596), 45421 states have internal predecessors, (57596), 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) [2021-11-07 17:28:51,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45422 states to 45422 states and 57596 transitions. [2021-11-07 17:28:51,081 INFO L78 Accepts]: Start accepts. Automaton has 45422 states and 57596 transitions. Word has length 89 [2021-11-07 17:28:51,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:51,081 INFO L470 AbstractCegarLoop]: Abstraction has 45422 states and 57596 transitions. [2021-11-07 17:28:51,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-11-07 17:28:51,082 INFO L276 IsEmpty]: Start isEmpty. Operand 45422 states and 57596 transitions. [2021-11-07 17:28:51,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 17:28:51,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:51,084 INFO L514 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] [2021-11-07 17:28:51,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 17:28:51,084 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-07 17:28:51,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:51,085 INFO L85 PathProgramCache]: Analyzing trace with hash -142139483, now seen corresponding path program 1 times [2021-11-07 17:28:51,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:51,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312562318] [2021-11-07 17:28:51,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:51,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:28:51,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:51,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312562318] [2021-11-07 17:28:51,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312562318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:51,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:51,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:51,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731067124] [2021-11-07 17:28:51,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:51,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:28:51,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:51,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:28:51,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:28:51,427 INFO L87 Difference]: Start difference. First operand 45422 states and 57596 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-07 17:28:52,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:52,784 INFO L93 Difference]: Finished difference Result 45422 states and 57596 transitions. [2021-11-07 17:28:52,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:28:52,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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 91 [2021-11-07 17:28:52,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:52,861 INFO L225 Difference]: With dead ends: 45422 [2021-11-07 17:28:52,861 INFO L226 Difference]: Without dead ends: 45416 [2021-11-07 17:28:52,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:28:52,890 INFO L933 BasicCegarLoop]: 5068 mSDtfsCounter, 4995 mSDsluCounter, 4969 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 364.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4995 SdHoareTripleChecker+Valid, 10037 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.31ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 388.88ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:52,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4995 Valid, 10037 Invalid, 112 Unknown, 0 Unchecked, 12.31ms Time], IncrementalHoareTripleChecker [40 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 388.88ms Time] [2021-11-07 17:28:52,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45416 states. [2021-11-07 17:28:53,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45416 to 45416. [2021-11-07 17:28:53,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45416 states, 45346 states have (on average 1.2700127905438185) internal successors, (57590), 45415 states have internal predecessors, (57590), 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) [2021-11-07 17:28:54,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45416 states to 45416 states and 57590 transitions. [2021-11-07 17:28:54,036 INFO L78 Accepts]: Start accepts. Automaton has 45416 states and 57590 transitions. Word has length 91 [2021-11-07 17:28:54,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:54,037 INFO L470 AbstractCegarLoop]: Abstraction has 45416 states and 57590 transitions. [2021-11-07 17:28:54,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-07 17:28:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 45416 states and 57590 transitions. [2021-11-07 17:28:54,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 17:28:54,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:54,039 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:28:54,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 17:28:54,040 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-07 17:28:54,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:54,040 INFO L85 PathProgramCache]: Analyzing trace with hash 843061864, now seen corresponding path program 1 times [2021-11-07 17:28:54,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:54,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547618725] [2021-11-07 17:28:54,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:54,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:28:54,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:54,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547618725] [2021-11-07 17:28:54,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547618725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:54,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:54,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:54,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120150421] [2021-11-07 17:28:54,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:54,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:28:54,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:54,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:28:54,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:28:54,347 INFO L87 Difference]: Start difference. First operand 45416 states and 57590 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:55,737 INFO L93 Difference]: Finished difference Result 45416 states and 57590 transitions. [2021-11-07 17:28:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:28:55,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-07 17:28:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:55,803 INFO L225 Difference]: With dead ends: 45416 [2021-11-07 17:28:55,803 INFO L226 Difference]: Without dead ends: 45410 [2021-11-07 17:28:55,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.78ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:28:55,818 INFO L933 BasicCegarLoop]: 5062 mSDtfsCounter, 4987 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 282.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4987 SdHoareTripleChecker+Valid, 10028 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.83ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 302.20ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:55,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4987 Valid, 10028 Invalid, 109 Unknown, 0 Unchecked, 11.83ms Time], IncrementalHoareTripleChecker [40 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 302.20ms Time] [2021-11-07 17:28:55,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45410 states. [2021-11-07 17:28:56,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45410 to 45410. [2021-11-07 17:28:56,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45410 states, 45343 states have (on average 1.2699644928654918) internal successors, (57584), 45409 states have internal predecessors, (57584), 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) [2021-11-07 17:28:56,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45410 states to 45410 states and 57584 transitions. [2021-11-07 17:28:56,940 INFO L78 Accepts]: Start accepts. Automaton has 45410 states and 57584 transitions. Word has length 93 [2021-11-07 17:28:56,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:56,940 INFO L470 AbstractCegarLoop]: Abstraction has 45410 states and 57584 transitions. [2021-11-07 17:28:56,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:28:56,940 INFO L276 IsEmpty]: Start isEmpty. Operand 45410 states and 57584 transitions. [2021-11-07 17:28:56,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 17:28:56,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:56,943 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:28:56,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 17:28:56,944 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-07 17:28:56,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:56,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1566215765, now seen corresponding path program 1 times [2021-11-07 17:28:56,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:56,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653154214] [2021-11-07 17:28:56,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:56,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:28:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:28:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:28:57,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:28:57,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653154214] [2021-11-07 17:28:57,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653154214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:28:57,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:28:57,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:28:57,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22092444] [2021-11-07 17:28:57,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:28:57,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:28:57,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:28:57,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:28:57,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:28:57,261 INFO L87 Difference]: Start difference. First operand 45410 states and 57584 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-11-07 17:28:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:28:58,678 INFO L93 Difference]: Finished difference Result 45410 states and 57584 transitions. [2021-11-07 17:28:58,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:28:58,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 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 95 [2021-11-07 17:28:58,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:28:58,752 INFO L225 Difference]: With dead ends: 45410 [2021-11-07 17:28:58,752 INFO L226 Difference]: Without dead ends: 45404 [2021-11-07 17:28:58,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 78.17ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:28:58,772 INFO L933 BasicCegarLoop]: 5056 mSDtfsCounter, 4979 mSDsluCounter, 4963 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 250.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4979 SdHoareTripleChecker+Valid, 10019 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.57ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 270.10ms IncrementalHoareTripleChecker+Time [2021-11-07 17:28:58,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4979 Valid, 10019 Invalid, 106 Unknown, 0 Unchecked, 10.57ms Time], IncrementalHoareTripleChecker [40 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 270.10ms Time] [2021-11-07 17:28:58,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45404 states. [2021-11-07 17:28:59,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45404 to 45404. [2021-11-07 17:28:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45404 states, 45340 states have (on average 1.2699161887957653) internal successors, (57578), 45403 states have internal predecessors, (57578), 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) [2021-11-07 17:28:59,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45404 states to 45404 states and 57578 transitions. [2021-11-07 17:28:59,905 INFO L78 Accepts]: Start accepts. Automaton has 45404 states and 57578 transitions. Word has length 95 [2021-11-07 17:28:59,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:28:59,905 INFO L470 AbstractCegarLoop]: Abstraction has 45404 states and 57578 transitions. [2021-11-07 17:28:59,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 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) [2021-11-07 17:28:59,905 INFO L276 IsEmpty]: Start isEmpty. Operand 45404 states and 57578 transitions. [2021-11-07 17:28:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 17:28:59,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:28:59,910 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:28:59,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 17:28:59,910 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-07 17:28:59,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:28:59,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1894644370, now seen corresponding path program 1 times [2021-11-07 17:28:59,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:28:59,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050015581] [2021-11-07 17:28:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:28:59,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:29:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:29:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:29:00,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:29:00,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050015581] [2021-11-07 17:29:00,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050015581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:29:00,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:29:00,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:29:00,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044741541] [2021-11-07 17:29:00,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:29:00,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:29:00,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:29:00,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:29:00,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:29:00,399 INFO L87 Difference]: Start difference. First operand 45404 states and 57578 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-07 17:29:01,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:29:01,976 INFO L93 Difference]: Finished difference Result 45404 states and 57578 transitions. [2021-11-07 17:29:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:29:01,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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 97 [2021-11-07 17:29:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:29:02,043 INFO L225 Difference]: With dead ends: 45404 [2021-11-07 17:29:02,043 INFO L226 Difference]: Without dead ends: 45398 [2021-11-07 17:29:02,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.60ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:29:02,057 INFO L933 BasicCegarLoop]: 5050 mSDtfsCounter, 4971 mSDsluCounter, 4960 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 342.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4971 SdHoareTripleChecker+Valid, 10010 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.51ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 372.80ms IncrementalHoareTripleChecker+Time [2021-11-07 17:29:02,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4971 Valid, 10010 Invalid, 103 Unknown, 0 Unchecked, 12.51ms Time], IncrementalHoareTripleChecker [40 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 372.80ms Time] [2021-11-07 17:29:02,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45398 states. [2021-11-07 17:29:03,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45398 to 45398. [2021-11-07 17:29:03,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45398 states, 45337 states have (on average 1.2698678783333701) internal successors, (57572), 45397 states have internal predecessors, (57572), 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) [2021-11-07 17:29:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45398 states to 45398 states and 57572 transitions. [2021-11-07 17:29:03,264 INFO L78 Accepts]: Start accepts. Automaton has 45398 states and 57572 transitions. Word has length 97 [2021-11-07 17:29:03,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:29:03,264 INFO L470 AbstractCegarLoop]: Abstraction has 45398 states and 57572 transitions. [2021-11-07 17:29:03,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-07 17:29:03,264 INFO L276 IsEmpty]: Start isEmpty. Operand 45398 states and 57572 transitions. [2021-11-07 17:29:03,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 17:29:03,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:29:03,269 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:29:03,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 17:29:03,270 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-07 17:29:03,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:29:03,270 INFO L85 PathProgramCache]: Analyzing trace with hash 313046449, now seen corresponding path program 1 times [2021-11-07 17:29:03,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:29:03,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992350761] [2021-11-07 17:29:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:29:03,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:29:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:29:03,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:29:03,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:29:03,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992350761] [2021-11-07 17:29:03,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992350761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:29:03,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:29:03,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:29:03,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957885221] [2021-11-07 17:29:03,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:29:03,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:29:03,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:29:03,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:29:03,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:29:03,567 INFO L87 Difference]: Start difference. First operand 45398 states and 57572 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-11-07 17:29:05,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:29:05,537 INFO L93 Difference]: Finished difference Result 45398 states and 57572 transitions. [2021-11-07 17:29:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:29:05,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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 99 [2021-11-07 17:29:05,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:29:05,597 INFO L225 Difference]: With dead ends: 45398 [2021-11-07 17:29:05,597 INFO L226 Difference]: Without dead ends: 45392 [2021-11-07 17:29:05,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.23ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:29:05,611 INFO L933 BasicCegarLoop]: 5014 mSDtfsCounter, 4452 mSDsluCounter, 5378 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 673.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4452 SdHoareTripleChecker+Valid, 10392 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.10ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 721.15ms IncrementalHoareTripleChecker+Time [2021-11-07 17:29:05,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4452 Valid, 10392 Invalid, 220 Unknown, 0 Unchecked, 12.10ms Time], IncrementalHoareTripleChecker [55 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 721.15ms Time] [2021-11-07 17:29:05,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45392 states. [2021-11-07 17:29:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45392 to 45392. [2021-11-07 17:29:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45392 states, 45334 states have (on average 1.2698195614770371) internal successors, (57566), 45391 states have internal predecessors, (57566), 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) [2021-11-07 17:29:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45392 states to 45392 states and 57566 transitions. [2021-11-07 17:29:06,930 INFO L78 Accepts]: Start accepts. Automaton has 45392 states and 57566 transitions. Word has length 99 [2021-11-07 17:29:06,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:29:06,931 INFO L470 AbstractCegarLoop]: Abstraction has 45392 states and 57566 transitions. [2021-11-07 17:29:06,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-11-07 17:29:06,931 INFO L276 IsEmpty]: Start isEmpty. Operand 45392 states and 57566 transitions. [2021-11-07 17:29:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 17:29:06,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:29:06,936 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:29:06,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 17:29:06,936 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-07 17:29:06,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:29:06,937 INFO L85 PathProgramCache]: Analyzing trace with hash 190079604, now seen corresponding path program 1 times [2021-11-07 17:29:06,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:29:06,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792422220] [2021-11-07 17:29:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:29:06,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:29:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:29:07,252 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:29:07,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:29:07,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792422220] [2021-11-07 17:29:07,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792422220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:29:07,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:29:07,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:29:07,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216372014] [2021-11-07 17:29:07,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:29:07,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:29:07,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:29:07,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:29:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:29:07,254 INFO L87 Difference]: Start difference. First operand 45392 states and 57566 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:29:08,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:29:08,860 INFO L93 Difference]: Finished difference Result 45392 states and 57566 transitions. [2021-11-07 17:29:08,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:29:08,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-07 17:29:08,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:29:08,921 INFO L225 Difference]: With dead ends: 45392 [2021-11-07 17:29:08,921 INFO L226 Difference]: Without dead ends: 45386 [2021-11-07 17:29:08,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:29:08,933 INFO L933 BasicCegarLoop]: 5038 mSDtfsCounter, 4955 mSDsluCounter, 4954 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 227.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4955 SdHoareTripleChecker+Valid, 9992 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.96ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 243.90ms IncrementalHoareTripleChecker+Time [2021-11-07 17:29:08,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4955 Valid, 9992 Invalid, 97 Unknown, 0 Unchecked, 10.96ms Time], IncrementalHoareTripleChecker [40 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 243.90ms Time] [2021-11-07 17:29:08,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45386 states. [2021-11-07 17:29:10,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45386 to 45386. [2021-11-07 17:29:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45386 states, 45331 states have (on average 1.2697712382254969) internal successors, (57560), 45385 states have internal predecessors, (57560), 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) [2021-11-07 17:29:10,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45386 states to 45386 states and 57560 transitions. [2021-11-07 17:29:10,305 INFO L78 Accepts]: Start accepts. Automaton has 45386 states and 57560 transitions. Word has length 101 [2021-11-07 17:29:10,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:29:10,305 INFO L470 AbstractCegarLoop]: Abstraction has 45386 states and 57560 transitions. [2021-11-07 17:29:10,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:29:10,306 INFO L276 IsEmpty]: Start isEmpty. Operand 45386 states and 57560 transitions. [2021-11-07 17:29:10,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 17:29:10,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:29:10,315 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:29:10,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 17:29:10,316 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr65ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-07 17:29:10,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:29:10,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1187624467, now seen corresponding path program 1 times [2021-11-07 17:29:10,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:29:10,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745006340] [2021-11-07 17:29:10,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:29:10,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:29:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:29:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:29:10,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:29:10,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745006340] [2021-11-07 17:29:10,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745006340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:29:10,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:29:10,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:29:10,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300182299] [2021-11-07 17:29:10,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:29:10,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:29:10,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:29:10,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:29:10,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:29:10,591 INFO L87 Difference]: Start difference. First operand 45386 states and 57560 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-11-07 17:29:12,653 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []