./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 4d014703 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-4d01470 [2021-11-03 00:39:28,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 00:39:28,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 00:39:28,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 00:39:28,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 00:39:28,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 00:39:28,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 00:39:28,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 00:39:28,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 00:39:28,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 00:39:28,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 00:39:28,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 00:39:28,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 00:39:28,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 00:39:28,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 00:39:28,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 00:39:28,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 00:39:28,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 00:39:28,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 00:39:28,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 00:39:28,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 00:39:28,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 00:39:28,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 00:39:28,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 00:39:28,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 00:39:28,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 00:39:28,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 00:39:28,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 00:39:28,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 00:39:28,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 00:39:28,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 00:39:28,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 00:39:28,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 00:39:28,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 00:39:28,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 00:39:28,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 00:39:28,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 00:39:28,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 00:39:28,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 00:39:28,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 00:39:28,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 00:39:28,436 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 00:39:28,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 00:39:28,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 00:39:28,454 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 00:39:28,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 00:39:28,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 00:39:28,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 00:39:28,456 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 00:39:28,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 00:39:28,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 00:39:28,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 00:39:28,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 00:39:28,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 00:39:28,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 00:39:28,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 00:39:28,457 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 00:39:28,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 00:39:28,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 00:39:28,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 00:39:28,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 00:39:28,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 00:39:28,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 00:39:28,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 00:39:28,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 00:39:28,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 00:39:28,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 00:39:28,460 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 00:39:28,460 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 00:39:28,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 00:39:28,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 00:39:28,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 [2021-11-03 00:39:28,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 00:39:28,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 00:39:28,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 00:39:28,707 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 00:39:28,708 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 00:39:28,709 INFO L432 ainManager$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 [2021-11-03 00:39:28,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e385203f0/01864b22140e4470ad3ad8d617ab5345/FLAGb50cb23bb [2021-11-03 00:39:29,487 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 00:39:29,489 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 [2021-11-03 00:39:29,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e385203f0/01864b22140e4470ad3ad8d617ab5345/FLAGb50cb23bb [2021-11-03 00:39:29,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e385203f0/01864b22140e4470ad3ad8d617ab5345 [2021-11-03 00:39:29,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 00:39:29,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 00:39:29,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 00:39:29,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 00:39:29,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 00:39:29,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:39:29" (1/1) ... [2021-11-03 00:39:29,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c74afe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:29, skipping insertion in model container [2021-11-03 00:39:29,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:39:29" (1/1) ... [2021-11-03 00:39:29,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 00:39:29,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 00:39:31,718 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] [2021-11-03 00:39:31,722 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] [2021-11-03 00:39:31,722 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] [2021-11-03 00:39:31,727 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] [2021-11-03 00:39:31,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 00:39:31,797 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 00:39:32,112 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] [2021-11-03 00:39:32,113 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] [2021-11-03 00:39:32,114 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] [2021-11-03 00:39:32,114 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] [2021-11-03 00:39:32,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 00:39:32,302 INFO L208 MainTranslator]: Completed translation [2021-11-03 00:39:32,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:32 WrapperNode [2021-11-03 00:39:32,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 00:39:32,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 00:39:32,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 00:39:32,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 00:39:32,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:32" (1/1) ... [2021-11-03 00:39:32,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:32" (1/1) ... [2021-11-03 00:39:33,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 00:39:33,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 00:39:33,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 00:39:33,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 00:39:33,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:32" (1/1) ... [2021-11-03 00:39:33,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:32" (1/1) ... [2021-11-03 00:39:33,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:32" (1/1) ... [2021-11-03 00:39:33,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:32" (1/1) ... [2021-11-03 00:39:33,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:32" (1/1) ... [2021-11-03 00:39:33,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:32" (1/1) ... [2021-11-03 00:39:33,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:32" (1/1) ... [2021-11-03 00:39:33,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 00:39:33,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 00:39:33,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 00:39:33,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 00:39:33,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:32" (1/1) ... [2021-11-03 00:39:33,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 00:39:33,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 00:39:33,925 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) [2021-11-03 00:39:33,946 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 [2021-11-03 00:39:33,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 00:39:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-03 00:39:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-03 00:39:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 00:39:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 00:39:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 00:39:33,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 00:39:33,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 00:39:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 00:39:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 00:39:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 00:39:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 00:39:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 00:39:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 00:39:33,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 00:40:43,656 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-03 00:40:43,656 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-03 00:40:43,656 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-03 00:40:43,657 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-03 00:40:43,657 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-03 00:40:43,657 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 00:40:43,681 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 00:40:43,682 INFO L299 CfgBuilder]: Removed 4962 assume(true) statements. [2021-11-03 00:40:43,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:40:43 BoogieIcfgContainer [2021-11-03 00:40:43,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 00:40:43,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 00:40:43,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 00:40:43,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 00:40:43,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:39:29" (1/3) ... [2021-11-03 00:40:43,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd060e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:40:43, skipping insertion in model container [2021-11-03 00:40:43,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:32" (2/3) ... [2021-11-03 00:40:43,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd060e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:40:43, skipping insertion in model container [2021-11-03 00:40:43,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:40:43" (3/3) ... [2021-11-03 00:40:43,699 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2021-11-03 00:40:43,703 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 00:40:43,704 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2021-11-03 00:40:43,752 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 00:40:43,757 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 [2021-11-03 00:40:43,757 INFO L340 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2021-11-03 00:40:43,820 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) [2021-11-03 00:40:43,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 00:40:43,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:40:43,839 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] [2021-11-03 00:40:43,839 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)] === [2021-11-03 00:40:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:40:43,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1806629518, now seen corresponding path program 1 times [2021-11-03 00:40:43,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:40:43,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049649724] [2021-11-03 00:40:43,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:40:43,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:40:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:40:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:40:44,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:40:44,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049649724] [2021-11-03 00:40:44,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049649724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:40:44,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:40:44,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:40:44,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534167862] [2021-11-03 00:40:44,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:40:44,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:40:44,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:40:44,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:40:44,573 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) [2021-11-03 00:40:46,660 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 [] [2021-11-03 00:40:52,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:41:00,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:41:00,850 INFO L93 Difference]: Finished difference Result 12468 states and 16185 transitions. [2021-11-03 00:41:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:41:00,852 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 [2021-11-03 00:41:00,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:41:00,902 INFO L225 Difference]: With dead ends: 12468 [2021-11-03 00:41:00,902 INFO L226 Difference]: Without dead ends: 7936 [2021-11-03 00:41:00,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:41:00,923 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 5056 mSDsluCounter, 5392 mSDsCounter, 0 mSdLazyCounter, 10506 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13788.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5056 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 10515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.56ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10506 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15794.61ms IncrementalHoareTripleChecker+Time [2021-11-03 00:41:00,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5056 Valid, 351 Invalid, 10515 Unknown, 0 Unchecked, 29.56ms Time], IncrementalHoareTripleChecker [7 Valid, 10506 Invalid, 2 Unknown, 0 Unchecked, 15794.61ms Time] [2021-11-03 00:41:00,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7936 states. [2021-11-03 00:41:01,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7936 to 7816. [2021-11-03 00:41:01,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7816 states, 7737 states have (on average 1.262246348713972) internal successors, (9766), 7815 states have internal predecessors, (9766), 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) [2021-11-03 00:41:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7816 states to 7816 states and 9766 transitions. [2021-11-03 00:41:01,187 INFO L78 Accepts]: Start accepts. Automaton has 7816 states and 9766 transitions. Word has length 57 [2021-11-03 00:41:01,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:41:01,188 INFO L470 AbstractCegarLoop]: Abstraction has 7816 states and 9766 transitions. [2021-11-03 00:41:01,188 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) [2021-11-03 00:41:01,189 INFO L276 IsEmpty]: Start isEmpty. Operand 7816 states and 9766 transitions. [2021-11-03 00:41:01,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 00:41:01,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:41:01,195 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] [2021-11-03 00:41:01,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 00:41:01,195 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)] === [2021-11-03 00:41:01,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:41:01,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1518682448, now seen corresponding path program 1 times [2021-11-03 00:41:01,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:41:01,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241408992] [2021-11-03 00:41:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:41:01,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:41:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:41:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:41:01,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:41:01,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241408992] [2021-11-03 00:41:01,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241408992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:41:01,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:41:01,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:41:01,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021286978] [2021-11-03 00:41:01,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:41:01,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:41:01,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:41:01,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:41:01,538 INFO L87 Difference]: Start difference. First operand 7816 states and 9766 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) [2021-11-03 00:41:03,598 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 [] [2021-11-03 00:41:33,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:41:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:41:41,258 INFO L93 Difference]: Finished difference Result 21396 states and 26734 transitions. [2021-11-03 00:41:41,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:41:41,263 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 [2021-11-03 00:41:41,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:41:41,322 INFO L225 Difference]: With dead ends: 21396 [2021-11-03 00:41:41,324 INFO L226 Difference]: Without dead ends: 13688 [2021-11-03 00:41:41,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:41:41,341 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3852 mSDsluCounter, 4911 mSDsCounter, 0 mSdLazyCounter, 10083 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36427.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3852 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.55ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 10083 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38827.72ms IncrementalHoareTripleChecker+Time [2021-11-03 00:41:41,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3852 Valid, 0 Invalid, 10096 Unknown, 0 Unchecked, 60.55ms Time], IncrementalHoareTripleChecker [11 Valid, 10083 Invalid, 2 Unknown, 0 Unchecked, 38827.72ms Time] [2021-11-03 00:41:41,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13688 states. [2021-11-03 00:41:41,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13688 to 12954. [2021-11-03 00:41:41,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12954 states, 12875 states have (on average 1.2635339805825243) internal successors, (16268), 12953 states have internal predecessors, (16268), 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) [2021-11-03 00:41:41,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12954 states to 12954 states and 16268 transitions. [2021-11-03 00:41:41,657 INFO L78 Accepts]: Start accepts. Automaton has 12954 states and 16268 transitions. Word has length 63 [2021-11-03 00:41:41,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:41:41,664 INFO L470 AbstractCegarLoop]: Abstraction has 12954 states and 16268 transitions. [2021-11-03 00:41:41,664 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) [2021-11-03 00:41:41,665 INFO L276 IsEmpty]: Start isEmpty. Operand 12954 states and 16268 transitions. [2021-11-03 00:41:41,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 00:41:41,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:41:41,666 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] [2021-11-03 00:41:41,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 00:41:41,667 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)] === [2021-11-03 00:41:41,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:41:41,668 INFO L85 PathProgramCache]: Analyzing trace with hash -578711267, now seen corresponding path program 1 times [2021-11-03 00:41:41,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:41:41,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408284156] [2021-11-03 00:41:41,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:41:41,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:41:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:41:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:41:42,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:41:42,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408284156] [2021-11-03 00:41:42,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408284156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:41:42,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:41:42,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:41:42,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148510541] [2021-11-03 00:41:42,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:41:42,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:41:42,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:41:42,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:41:42,026 INFO L87 Difference]: Start difference. First operand 12954 states and 16268 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) [2021-11-03 00:41:44,091 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 [] [2021-11-03 00:42:23,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:42:26,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:42:26,769 INFO L93 Difference]: Finished difference Result 36470 states and 45844 transitions. [2021-11-03 00:42:26,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:42:26,770 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 [2021-11-03 00:42:26,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:42:26,930 INFO L225 Difference]: With dead ends: 36470 [2021-11-03 00:42:26,930 INFO L226 Difference]: Without dead ends: 23624 [2021-11-03 00:42:26,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:42:26,957 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4508 mSDsluCounter, 4681 mSDsCounter, 0 mSdLazyCounter, 9799 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41107.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4508 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.23ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 9799 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43644.78ms IncrementalHoareTripleChecker+Time [2021-11-03 00:42:26,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4508 Valid, 0 Invalid, 9817 Unknown, 0 Unchecked, 44.23ms Time], IncrementalHoareTripleChecker [16 Valid, 9799 Invalid, 2 Unknown, 0 Unchecked, 43644.78ms Time] [2021-11-03 00:42:26,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23624 states. [2021-11-03 00:42:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23624 to 22752. [2021-11-03 00:42:27,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22752 states, 22673 states have (on average 1.2678516296917037) internal successors, (28746), 22751 states have internal predecessors, (28746), 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) [2021-11-03 00:42:27,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22752 states to 22752 states and 28746 transitions. [2021-11-03 00:42:27,431 INFO L78 Accepts]: Start accepts. Automaton has 22752 states and 28746 transitions. Word has length 64 [2021-11-03 00:42:27,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:42:27,431 INFO L470 AbstractCegarLoop]: Abstraction has 22752 states and 28746 transitions. [2021-11-03 00:42:27,432 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) [2021-11-03 00:42:27,432 INFO L276 IsEmpty]: Start isEmpty. Operand 22752 states and 28746 transitions. [2021-11-03 00:42:27,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 00:42:27,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:42:27,434 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] [2021-11-03 00:42:27,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 00:42:27,434 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)] === [2021-11-03 00:42:27,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:42:27,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1120258482, now seen corresponding path program 1 times [2021-11-03 00:42:27,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:42:27,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136816885] [2021-11-03 00:42:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:42:27,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:42:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:42:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:42:27,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:42:27,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136816885] [2021-11-03 00:42:27,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136816885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:42:27,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:42:27,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:42:27,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596504314] [2021-11-03 00:42:27,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:42:27,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:42:27,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:42:27,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:42:27,731 INFO L87 Difference]: Start difference. First operand 22752 states and 28746 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) [2021-11-03 00:42:29,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:43:14,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:43:21,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:43:21,208 INFO L93 Difference]: Finished difference Result 38491 states and 48671 transitions. [2021-11-03 00:43:21,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:43:21,209 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 [2021-11-03 00:43:21,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:43:21,253 INFO L225 Difference]: With dead ends: 38491 [2021-11-03 00:43:21,254 INFO L226 Difference]: Without dead ends: 15847 [2021-11-03 00:43:21,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:43:21,295 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2152 mSDsluCounter, 4927 mSDsCounter, 0 mSdLazyCounter, 11615 mSolverCounterSat, 21 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49938.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.72ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 11615 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52596.42ms IncrementalHoareTripleChecker+Time [2021-11-03 00:43:21,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2152 Valid, 0 Invalid, 11638 Unknown, 0 Unchecked, 49.72ms Time], IncrementalHoareTripleChecker [21 Valid, 11615 Invalid, 2 Unknown, 0 Unchecked, 52596.42ms Time] [2021-11-03 00:43:21,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15847 states. [2021-11-03 00:43:21,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15847 to 15677. [2021-11-03 00:43:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15677 states, 15598 states have (on average 1.2706116168739583) internal successors, (19819), 15676 states have internal predecessors, (19819), 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) [2021-11-03 00:43:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15677 states to 15677 states and 19819 transitions. [2021-11-03 00:43:21,585 INFO L78 Accepts]: Start accepts. Automaton has 15677 states and 19819 transitions. Word has length 71 [2021-11-03 00:43:21,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:43:21,588 INFO L470 AbstractCegarLoop]: Abstraction has 15677 states and 19819 transitions. [2021-11-03 00:43:21,588 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) [2021-11-03 00:43:21,588 INFO L276 IsEmpty]: Start isEmpty. Operand 15677 states and 19819 transitions. [2021-11-03 00:43:21,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 00:43:21,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:43:21,590 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] [2021-11-03 00:43:21,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 00:43:21,591 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)] === [2021-11-03 00:43:21,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:43:21,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1794554846, now seen corresponding path program 1 times [2021-11-03 00:43:21,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:43:21,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808317307] [2021-11-03 00:43:21,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:43:21,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:43:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:43:21,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:43:21,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:43:21,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808317307] [2021-11-03 00:43:21,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808317307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:43:21,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:43:21,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:43:21,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405868627] [2021-11-03 00:43:21,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:43:21,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:43:21,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:43:21,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:43:21,895 INFO L87 Difference]: Start difference. First operand 15677 states and 19819 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) [2021-11-03 00:43:23,958 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 [] [2021-11-03 00:44:10,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:44:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:44:14,123 INFO L93 Difference]: Finished difference Result 45709 states and 57902 transitions. [2021-11-03 00:44:14,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:44:14,124 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 [2021-11-03 00:44:14,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:44:14,186 INFO L225 Difference]: With dead ends: 45709 [2021-11-03 00:44:14,186 INFO L226 Difference]: Without dead ends: 30465 [2021-11-03 00:44:14,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:44:14,227 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4753 mSDsluCounter, 5065 mSDsCounter, 0 mSdLazyCounter, 10581 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48308.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4753 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.20ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10581 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51079.23ms IncrementalHoareTripleChecker+Time [2021-11-03 00:44:14,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4753 Valid, 0 Invalid, 10588 Unknown, 0 Unchecked, 53.20ms Time], IncrementalHoareTripleChecker [5 Valid, 10581 Invalid, 2 Unknown, 0 Unchecked, 51079.23ms Time] [2021-11-03 00:44:14,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30465 states. [2021-11-03 00:44:14,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30465 to 30345. [2021-11-03 00:44:14,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30345 states, 30266 states have (on average 1.2717901275358487) internal successors, (38492), 30344 states have internal predecessors, (38492), 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) [2021-11-03 00:44:14,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30345 states to 30345 states and 38492 transitions. [2021-11-03 00:44:14,860 INFO L78 Accepts]: Start accepts. Automaton has 30345 states and 38492 transitions. Word has length 86 [2021-11-03 00:44:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:44:14,861 INFO L470 AbstractCegarLoop]: Abstraction has 30345 states and 38492 transitions. [2021-11-03 00:44:14,861 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) [2021-11-03 00:44:14,861 INFO L276 IsEmpty]: Start isEmpty. Operand 30345 states and 38492 transitions. [2021-11-03 00:44:14,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 00:44:14,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:44:14,863 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] [2021-11-03 00:44:14,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 00:44:14,864 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)] === [2021-11-03 00:44:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:44:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash 514691168, now seen corresponding path program 1 times [2021-11-03 00:44:14,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:44:14,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196690408] [2021-11-03 00:44:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:44:14,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:44:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:44:15,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:44:15,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:44:15,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196690408] [2021-11-03 00:44:15,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196690408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:44:15,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:44:15,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:44:15,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330938601] [2021-11-03 00:44:15,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:44:15,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:44:15,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:44:15,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:44:15,123 INFO L87 Difference]: Start difference. First operand 30345 states and 38492 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) [2021-11-03 00:44:17,183 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 [] [2021-11-03 00:45:21,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:45:26,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:45:26,298 INFO L93 Difference]: Finished difference Result 75053 states and 95264 transitions. [2021-11-03 00:45:26,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:45:26,298 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 [2021-11-03 00:45:26,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:45:26,360 INFO L225 Difference]: With dead ends: 75053 [2021-11-03 00:45:26,361 INFO L226 Difference]: Without dead ends: 45141 [2021-11-03 00:45:26,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:45:26,402 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4803 mSDsluCounter, 5016 mSDsCounter, 0 mSdLazyCounter, 14878 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66336.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.96ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14878 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69730.79ms IncrementalHoareTripleChecker+Time [2021-11-03 00:45:26,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4803 Valid, 0 Invalid, 14886 Unknown, 0 Unchecked, 59.96ms Time], IncrementalHoareTripleChecker [6 Valid, 14878 Invalid, 2 Unknown, 0 Unchecked, 69730.79ms Time] [2021-11-03 00:45:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45141 states. [2021-11-03 00:45:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45141 to 44972. [2021-11-03 00:45:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44972 states, 44893 states have (on average 1.2724478203728866) internal successors, (57124), 44971 states have internal predecessors, (57124), 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) [2021-11-03 00:45:27,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44972 states to 44972 states and 57124 transitions. [2021-11-03 00:45:27,275 INFO L78 Accepts]: Start accepts. Automaton has 44972 states and 57124 transitions. Word has length 86 [2021-11-03 00:45:27,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:45:27,275 INFO L470 AbstractCegarLoop]: Abstraction has 44972 states and 57124 transitions. [2021-11-03 00:45:27,275 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) [2021-11-03 00:45:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand 44972 states and 57124 transitions. [2021-11-03 00:45:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 00:45:27,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:45:27,278 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] [2021-11-03 00:45:27,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 00:45:27,278 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)] === [2021-11-03 00:45:27,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:45:27,278 INFO L85 PathProgramCache]: Analyzing trace with hash 496418719, now seen corresponding path program 1 times [2021-11-03 00:45:27,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:45:27,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132596984] [2021-11-03 00:45:27,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:45:27,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:45:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:45:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:45:27,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:45:27,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132596984] [2021-11-03 00:45:27,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132596984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:45:27,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:45:27,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:45:27,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398719432] [2021-11-03 00:45:27,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:45:27,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:45:27,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:45:27,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:45:27,620 INFO L87 Difference]: Start difference. First operand 44972 states and 57124 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) [2021-11-03 00:45:29,680 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 [] [2021-11-03 00:46:15,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:46:42,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:46:42,914 INFO L93 Difference]: Finished difference Result 89509 states and 113715 transitions. [2021-11-03 00:46:42,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:46:42,915 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 [2021-11-03 00:46:42,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:46:43,051 INFO L225 Difference]: With dead ends: 89509 [2021-11-03 00:46:43,051 INFO L226 Difference]: Without dead ends: 89503 [2021-11-03 00:46:43,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.72ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:46:43,078 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5011 mSDsluCounter, 9943 mSDsCounter, 0 mSdLazyCounter, 15114 mSolverCounterSat, 73 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69853.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5011 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 114.71ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 15114 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73331.70ms IncrementalHoareTripleChecker+Time [2021-11-03 00:46:43,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5011 Valid, 0 Invalid, 15189 Unknown, 0 Unchecked, 114.71ms Time], IncrementalHoareTripleChecker [73 Valid, 15114 Invalid, 2 Unknown, 0 Unchecked, 73331.70ms Time] [2021-11-03 00:46:43,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89503 states. [2021-11-03 00:46:44,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89503 to 89239. [2021-11-03 00:46:44,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89239 states, 89160 states have (on average 1.2728353521758635) internal successors, (113486), 89238 states have internal predecessors, (113486), 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) [2021-11-03 00:46:44,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89239 states to 89239 states and 113486 transitions. [2021-11-03 00:46:44,948 INFO L78 Accepts]: Start accepts. Automaton has 89239 states and 113486 transitions. Word has length 87 [2021-11-03 00:46:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:46:44,949 INFO L470 AbstractCegarLoop]: Abstraction has 89239 states and 113486 transitions. [2021-11-03 00:46:44,949 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) [2021-11-03 00:46:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 89239 states and 113486 transitions. [2021-11-03 00:46:44,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 00:46:44,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:46:44,954 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] [2021-11-03 00:46:44,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 00:46:44,954 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)] === [2021-11-03 00:46:44,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:46:44,955 INFO L85 PathProgramCache]: Analyzing trace with hash 317170018, now seen corresponding path program 1 times [2021-11-03 00:46:44,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:46:44,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754892268] [2021-11-03 00:46:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:46:44,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:46:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:46:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:46:45,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:46:45,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754892268] [2021-11-03 00:46:45,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754892268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:46:45,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:46:45,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:46:45,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224385141] [2021-11-03 00:46:45,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:46:45,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:46:45,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:46:45,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:46:45,601 INFO L87 Difference]: Start difference. First operand 89239 states and 113486 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) [2021-11-03 00:46:47,740 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:47:33,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:48:02,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:48:02,842 INFO L93 Difference]: Finished difference Result 89503 states and 113709 transitions. [2021-11-03 00:48:02,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:48:02,843 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 [2021-11-03 00:48:02,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:48:02,989 INFO L225 Difference]: With dead ends: 89503 [2021-11-03 00:48:02,990 INFO L226 Difference]: Without dead ends: 89497 [2021-11-03 00:48:03,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 136.08ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:48:03,022 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5000 mSDsluCounter, 9943 mSDsCounter, 0 mSdLazyCounter, 15114 mSolverCounterSat, 76 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71741.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5000 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.80ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 15114 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75249.32ms IncrementalHoareTripleChecker+Time [2021-11-03 00:48:03,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5000 Valid, 0 Invalid, 15192 Unknown, 0 Unchecked, 87.80ms Time], IncrementalHoareTripleChecker [76 Valid, 15114 Invalid, 2 Unknown, 0 Unchecked, 75249.32ms Time] [2021-11-03 00:48:03,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89497 states. [2021-11-03 00:48:04,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89497 to 89245. [2021-11-03 00:48:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89245 states, 89166 states have (on average 1.272816993024247) internal successors, (113492), 89244 states have internal predecessors, (113492), 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) [2021-11-03 00:48:05,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89245 states to 89245 states and 113492 transitions. [2021-11-03 00:48:05,300 INFO L78 Accepts]: Start accepts. Automaton has 89245 states and 113492 transitions. Word has length 89 [2021-11-03 00:48:05,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:48:05,301 INFO L470 AbstractCegarLoop]: Abstraction has 89245 states and 113492 transitions. [2021-11-03 00:48:05,301 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) [2021-11-03 00:48:05,301 INFO L276 IsEmpty]: Start isEmpty. Operand 89245 states and 113492 transitions. [2021-11-03 00:48:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 00:48:05,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:48:05,303 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] [2021-11-03 00:48:05,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 00:48:05,304 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)] === [2021-11-03 00:48:05,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:48:05,305 INFO L85 PathProgramCache]: Analyzing trace with hash -142139483, now seen corresponding path program 1 times [2021-11-03 00:48:05,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:48:05,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691871314] [2021-11-03 00:48:05,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:48:05,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:48:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:48:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:48:05,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:48:05,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691871314] [2021-11-03 00:48:05,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691871314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:48:05,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:48:05,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:48:05,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364419116] [2021-11-03 00:48:05,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:48:05,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:48:05,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:48:05,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:48:05,890 INFO L87 Difference]: Start difference. First operand 89245 states and 113492 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) [2021-11-03 00:48:07,952 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 [] [2021-11-03 00:48:53,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:49:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:49:23,378 INFO L93 Difference]: Finished difference Result 89497 states and 113703 transitions. [2021-11-03 00:49:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:49:23,379 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 [2021-11-03 00:49:23,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:49:23,519 INFO L225 Difference]: With dead ends: 89497 [2021-11-03 00:49:23,519 INFO L226 Difference]: Without dead ends: 89491 [2021-11-03 00:49:23,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.41ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:49:23,553 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4992 mSDsluCounter, 9943 mSDsCounter, 0 mSdLazyCounter, 15114 mSolverCounterSat, 76 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72022.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4992 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 89.46ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 15114 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75468.66ms IncrementalHoareTripleChecker+Time [2021-11-03 00:49:23,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4992 Valid, 0 Invalid, 15192 Unknown, 0 Unchecked, 89.46ms Time], IncrementalHoareTripleChecker [76 Valid, 15114 Invalid, 2 Unknown, 0 Unchecked, 75468.66ms Time] [2021-11-03 00:49:23,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89491 states. [2021-11-03 00:49:25,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89491 to 89251. [2021-11-03 00:49:25,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89251 states, 89172 states have (on average 1.2727986363432469) internal successors, (113498), 89250 states have internal predecessors, (113498), 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) [2021-11-03 00:49:25,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89251 states to 89251 states and 113498 transitions. [2021-11-03 00:49:25,823 INFO L78 Accepts]: Start accepts. Automaton has 89251 states and 113498 transitions. Word has length 91 [2021-11-03 00:49:25,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:49:25,823 INFO L470 AbstractCegarLoop]: Abstraction has 89251 states and 113498 transitions. [2021-11-03 00:49:25,823 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) [2021-11-03 00:49:25,824 INFO L276 IsEmpty]: Start isEmpty. Operand 89251 states and 113498 transitions. [2021-11-03 00:49:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 00:49:25,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:49:25,826 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] [2021-11-03 00:49:25,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 00:49:25,826 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)] === [2021-11-03 00:49:25,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:49:25,827 INFO L85 PathProgramCache]: Analyzing trace with hash 843061864, now seen corresponding path program 1 times [2021-11-03 00:49:25,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:49:25,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657468816] [2021-11-03 00:49:25,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:49:25,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:49:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:49:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:49:26,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:49:26,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657468816] [2021-11-03 00:49:26,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657468816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:49:26,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:49:26,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:49:26,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212228914] [2021-11-03 00:49:26,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:49:26,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:49:26,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:49:26,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:49:26,148 INFO L87 Difference]: Start difference. First operand 89251 states and 113498 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) [2021-11-03 00:49:28,208 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 [] [2021-11-03 00:50:16,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:50:46,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:50:46,700 INFO L93 Difference]: Finished difference Result 89491 states and 113697 transitions. [2021-11-03 00:50:46,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:50:46,701 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 [2021-11-03 00:50:46,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:50:46,844 INFO L225 Difference]: With dead ends: 89491 [2021-11-03 00:50:46,844 INFO L226 Difference]: Without dead ends: 89485 [2021-11-03 00:50:46,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 85.33ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:50:46,881 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4984 mSDsluCounter, 9943 mSDsCounter, 0 mSdLazyCounter, 15114 mSolverCounterSat, 76 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74976.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4984 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 90.06ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 15114 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78525.16ms IncrementalHoareTripleChecker+Time [2021-11-03 00:50:46,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4984 Valid, 0 Invalid, 15192 Unknown, 0 Unchecked, 90.06ms Time], IncrementalHoareTripleChecker [76 Valid, 15114 Invalid, 2 Unknown, 0 Unchecked, 78525.16ms Time] [2021-11-03 00:50:47,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89485 states. [2021-11-03 00:50:49,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89485 to 89257. [2021-11-03 00:50:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89257 states, 89178 states have (on average 1.2727802821323644) internal successors, (113504), 89256 states have internal predecessors, (113504), 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) [2021-11-03 00:50:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89257 states to 89257 states and 113504 transitions. [2021-11-03 00:50:49,258 INFO L78 Accepts]: Start accepts. Automaton has 89257 states and 113504 transitions. Word has length 93 [2021-11-03 00:50:49,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:50:49,259 INFO L470 AbstractCegarLoop]: Abstraction has 89257 states and 113504 transitions. [2021-11-03 00:50:49,259 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) [2021-11-03 00:50:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand 89257 states and 113504 transitions. [2021-11-03 00:50:49,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 00:50:49,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:50:49,262 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] [2021-11-03 00:50:49,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 00:50:49,262 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)] === [2021-11-03 00:50:49,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:50:49,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1566215765, now seen corresponding path program 1 times [2021-11-03 00:50:49,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:50:49,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394973175] [2021-11-03 00:50:49,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:50:49,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:50:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:50:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:50:49,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:50:49,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394973175] [2021-11-03 00:50:49,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394973175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:50:49,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:50:49,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:50:49,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893817345] [2021-11-03 00:50:49,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:50:49,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:50:49,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:50:49,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:50:49,917 INFO L87 Difference]: Start difference. First operand 89257 states and 113504 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) [2021-11-03 00:50:52,003 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 [] [2021-11-03 00:51:40,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:52:11,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:52:11,491 INFO L93 Difference]: Finished difference Result 89485 states and 113691 transitions. [2021-11-03 00:52:11,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:52:11,491 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 [2021-11-03 00:52:11,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:52:11,634 INFO L225 Difference]: With dead ends: 89485 [2021-11-03 00:52:11,635 INFO L226 Difference]: Without dead ends: 89479 [2021-11-03 00:52:11,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 119.05ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:52:11,667 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4976 mSDsluCounter, 9943 mSDsCounter, 0 mSdLazyCounter, 15114 mSolverCounterSat, 76 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75678.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4976 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 112.39ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 15114 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79316.90ms IncrementalHoareTripleChecker+Time [2021-11-03 00:52:11,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4976 Valid, 0 Invalid, 15192 Unknown, 0 Unchecked, 112.39ms Time], IncrementalHoareTripleChecker [76 Valid, 15114 Invalid, 2 Unknown, 0 Unchecked, 79316.90ms Time] [2021-11-03 00:52:11,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89479 states. [2021-11-03 00:52:13,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89479 to 89263. [2021-11-03 00:52:13,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89263 states, 89184 states have (on average 1.2727619303911015) internal successors, (113510), 89262 states have internal predecessors, (113510), 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) [2021-11-03 00:52:13,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89263 states to 89263 states and 113510 transitions. [2021-11-03 00:52:13,954 INFO L78 Accepts]: Start accepts. Automaton has 89263 states and 113510 transitions. Word has length 95 [2021-11-03 00:52:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:52:13,955 INFO L470 AbstractCegarLoop]: Abstraction has 89263 states and 113510 transitions. [2021-11-03 00:52:13,955 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) [2021-11-03 00:52:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 89263 states and 113510 transitions. [2021-11-03 00:52:13,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 00:52:13,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:52:13,959 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] [2021-11-03 00:52:13,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 00:52:13,959 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)] === [2021-11-03 00:52:13,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:52:13,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1894644370, now seen corresponding path program 1 times [2021-11-03 00:52:13,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:52:13,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108887330] [2021-11-03 00:52:13,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:52:13,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:52:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:52:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:52:14,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:52:14,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108887330] [2021-11-03 00:52:14,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108887330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:52:14,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:52:14,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:52:14,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789432368] [2021-11-03 00:52:14,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:52:14,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:52:14,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:52:14,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:52:14,541 INFO L87 Difference]: Start difference. First operand 89263 states and 113510 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) [2021-11-03 00:52:16,603 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 [] Killed by 15