./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-mutex_drivers-net-ethernet-icplus-ipg.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9fae230e52bc983f4c0251cc946bfbc52943e9b9d698b0f694e42af65a9c74e9 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 17:02:08,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 17:02:08,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 17:02:08,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 17:02:08,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 17:02:08,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 17:02:08,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 17:02:08,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 17:02:08,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 17:02:08,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 17:02:08,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 17:02:08,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 17:02:08,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 17:02:08,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 17:02:08,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 17:02:08,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 17:02:08,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 17:02:08,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 17:02:08,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 17:02:08,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 17:02:08,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 17:02:08,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 17:02:08,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 17:02:08,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 17:02:08,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 17:02:08,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 17:02:08,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 17:02:08,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 17:02:08,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 17:02:08,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 17:02:08,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 17:02:08,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 17:02:08,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 17:02:08,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 17:02:08,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 17:02:08,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 17:02:08,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 17:02:08,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 17:02:08,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 17:02:08,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 17:02:08,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 17:02:08,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 17:02:08,606 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 17:02:08,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 17:02:08,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 17:02:08,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 17:02:08,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 17:02:08,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 17:02:08,609 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 17:02:08,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 17:02:08,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 17:02:08,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 17:02:08,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 17:02:08,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 17:02:08,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 17:02:08,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 17:02:08,611 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 17:02:08,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 17:02:08,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 17:02:08,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 17:02:08,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 17:02:08,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:02:08,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 17:02:08,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 17:02:08,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 17:02:08,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 17:02:08,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 17:02:08,613 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 17:02:08,613 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 17:02:08,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 17:02:08,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 17:02:08,614 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fae230e52bc983f4c0251cc946bfbc52943e9b9d698b0f694e42af65a9c74e9 [2021-11-07 17:02:08,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 17:02:08,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 17:02:08,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 17:02:08,849 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 17:02:08,850 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 17:02:08,852 INFO L432 ainManager$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-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-07 17:02:08,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d88ee254/f6739a5b7f7d483f80e38d3a8f89dee5/FLAG9a7daf583 [2021-11-07 17:02:09,708 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 17:02:09,709 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-07 17:02:09,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d88ee254/f6739a5b7f7d483f80e38d3a8f89dee5/FLAG9a7daf583 [2021-11-07 17:02:09,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d88ee254/f6739a5b7f7d483f80e38d3a8f89dee5 [2021-11-07 17:02:09,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 17:02:09,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 17:02:09,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 17:02:09,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 17:02:09,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 17:02:09,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:02:09" (1/1) ... [2021-11-07 17:02:09,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@451170d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:02:09, skipping insertion in model container [2021-11-07 17:02:09,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:02:09" (1/1) ... [2021-11-07 17:02:09,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 17:02:10,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 17:02:12,338 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-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292221,292234] [2021-11-07 17:02:12,341 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-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292387,292400] [2021-11-07 17:02:12,341 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-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292551,292564] [2021-11-07 17:02:12,342 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-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292716,292729] [2021-11-07 17:02:12,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:02:12,391 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 17:02:12,691 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-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292221,292234] [2021-11-07 17:02:12,692 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-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292387,292400] [2021-11-07 17:02:12,692 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-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292551,292564] [2021-11-07 17:02:12,693 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-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292716,292729] [2021-11-07 17:02:12,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:02:12,826 INFO L208 MainTranslator]: Completed translation [2021-11-07 17:02:12,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:02:12 WrapperNode [2021-11-07 17:02:12,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 17:02:12,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 17:02:12,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 17:02:12,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 17:02:12,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:02:12" (1/1) ... [2021-11-07 17:02:12,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:02:12" (1/1) ... [2021-11-07 17:02:13,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 17:02:13,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 17:02:13,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 17:02:13,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 17:02:13,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:02:12" (1/1) ... [2021-11-07 17:02:13,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:02:12" (1/1) ... [2021-11-07 17:02:13,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:02:12" (1/1) ... [2021-11-07 17:02:13,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:02:12" (1/1) ... [2021-11-07 17:02:14,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:02:12" (1/1) ... [2021-11-07 17:02:14,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:02:12" (1/1) ... [2021-11-07 17:02:14,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:02:12" (1/1) ... [2021-11-07 17:02:14,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 17:02:14,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 17:02:14,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 17:02:14,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 17:02:14,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:02:12" (1/1) ... [2021-11-07 17:02:14,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:02:14,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 17:02:14,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 17:02:14,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 17:02:14,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 17:02:14,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 17:02:14,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 17:02:14,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 17:02:14,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 17:02:14,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 17:02:14,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 17:02:14,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 17:02:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 17:02:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 17:02:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 17:02:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 17:02:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-07 17:02:14,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 17:02:14,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 17:02:14,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 17:02:27,148 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 17:02:27,151 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 17:02:27,151 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 17:02:27,152 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 17:02:27,152 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 17:02:27,153 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 17:02:27,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 17:02:27,298 INFO L299 CfgBuilder]: Removed 4958 assume(true) statements. [2021-11-07 17:02:27,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:02:27 BoogieIcfgContainer [2021-11-07 17:02:27,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 17:02:27,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 17:02:27,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 17:02:27,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 17:02:27,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:02:09" (1/3) ... [2021-11-07 17:02:27,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694b4e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:02:27, skipping insertion in model container [2021-11-07 17:02:27,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:02:12" (2/3) ... [2021-11-07 17:02:27,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694b4e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:02:27, skipping insertion in model container [2021-11-07 17:02:27,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:02:27" (3/3) ... [2021-11-07 17:02:27,318 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-07 17:02:27,322 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 17:02:27,322 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2021-11-07 17:02:27,382 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 17:02:27,388 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 17:02:27,388 INFO L340 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2021-11-07 17:02:27,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 4079 states, 4055 states have (on average 1.3023427866831072) internal successors, (5281), 4078 states have internal predecessors, (5281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:27,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 17:02:27,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:02:27,468 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] [2021-11-07 17:02:27,469 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 17:02:27,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:02:27,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1375132322, now seen corresponding path program 1 times [2021-11-07 17:02:27,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:02:27,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081727869] [2021-11-07 17:02:27,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:02:27,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:02:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:02:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:02:27,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:02:27,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081727869] [2021-11-07 17:02:28,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081727869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:02:28,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:02:28,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:02:28,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971816961] [2021-11-07 17:02:28,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:02:28,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:02:28,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:02:28,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:02:28,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:28,059 INFO L87 Difference]: Start difference. First operand has 4079 states, 4055 states have (on average 1.3023427866831072) internal successors, (5281), 4078 states have internal predecessors, (5281), 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 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:28,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:02:28,875 INFO L93 Difference]: Finished difference Result 11185 states and 14484 transitions. [2021-11-07 17:02:28,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:02:28,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2021-11-07 17:02:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:02:28,928 INFO L225 Difference]: With dead ends: 11185 [2021-11-07 17:02:28,928 INFO L226 Difference]: Without dead ends: 6960 [2021-11-07 17:02:28,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:28,948 INFO L933 BasicCegarLoop]: 5085 mSDtfsCounter, 4022 mSDsluCounter, 5031 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 422.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4022 SdHoareTripleChecker+Valid, 10116 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.81ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 491.01ms IncrementalHoareTripleChecker+Time [2021-11-07 17:02:28,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4022 Valid, 10116 Invalid, 68 Unknown, 0 Unchecked, 24.81ms Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 491.01ms Time] [2021-11-07 17:02:28,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6960 states. [2021-11-07 17:02:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6960 to 6615. [2021-11-07 17:02:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6615 states, 6591 states have (on average 1.252465483234714) internal successors, (8255), 6614 states have internal predecessors, (8255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:29,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6615 states to 6615 states and 8255 transitions. [2021-11-07 17:02:29,200 INFO L78 Accepts]: Start accepts. Automaton has 6615 states and 8255 transitions. Word has length 41 [2021-11-07 17:02:29,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:02:29,201 INFO L470 AbstractCegarLoop]: Abstraction has 6615 states and 8255 transitions. [2021-11-07 17:02:29,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:29,201 INFO L276 IsEmpty]: Start isEmpty. Operand 6615 states and 8255 transitions. [2021-11-07 17:02:29,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 17:02:29,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:02:29,203 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] [2021-11-07 17:02:29,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 17:02:29,204 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 17:02:29,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:02:29,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1114883933, now seen corresponding path program 1 times [2021-11-07 17:02:29,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:02:29,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263984485] [2021-11-07 17:02:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:02:29,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:02:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:02:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:02:29,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:02:29,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263984485] [2021-11-07 17:02:29,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263984485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:02:29,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:02:29,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:02:29,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616514803] [2021-11-07 17:02:29,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:02:29,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:02:29,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:02:29,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:02:29,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:29,330 INFO L87 Difference]: Start difference. First operand 6615 states and 8255 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:02:29,948 INFO L93 Difference]: Finished difference Result 19575 states and 24476 transitions. [2021-11-07 17:02:29,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:02:29,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 17:02:29,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:02:30,009 INFO L225 Difference]: With dead ends: 19575 [2021-11-07 17:02:30,010 INFO L226 Difference]: Without dead ends: 13028 [2021-11-07 17:02:30,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:30,031 INFO L933 BasicCegarLoop]: 4830 mSDtfsCounter, 4675 mSDsluCounter, 4792 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 315.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 9622 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.96ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 353.91ms IncrementalHoareTripleChecker+Time [2021-11-07 17:02:30,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4675 Valid, 9622 Invalid, 34 Unknown, 0 Unchecked, 13.96ms Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 353.91ms Time] [2021-11-07 17:02:30,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13028 states. [2021-11-07 17:02:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13028 to 13004. [2021-11-07 17:02:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13004 states, 12980 states have (on average 1.2535439137134052) internal successors, (16271), 13003 states have internal predecessors, (16271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13004 states to 13004 states and 16271 transitions. [2021-11-07 17:02:30,419 INFO L78 Accepts]: Start accepts. Automaton has 13004 states and 16271 transitions. Word has length 42 [2021-11-07 17:02:30,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:02:30,419 INFO L470 AbstractCegarLoop]: Abstraction has 13004 states and 16271 transitions. [2021-11-07 17:02:30,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:30,420 INFO L276 IsEmpty]: Start isEmpty. Operand 13004 states and 16271 transitions. [2021-11-07 17:02:30,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 17:02:30,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:02:30,423 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] [2021-11-07 17:02:30,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 17:02:30,423 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 17:02:30,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:02:30,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1793047480, now seen corresponding path program 1 times [2021-11-07 17:02:30,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:02:30,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237790426] [2021-11-07 17:02:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:02:30,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:02:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:02:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:02:30,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:02:30,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237790426] [2021-11-07 17:02:30,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237790426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:02:30,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:02:30,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:02:30,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262207954] [2021-11-07 17:02:30,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:02:30,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:02:30,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:02:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:02:30,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:30,724 INFO L87 Difference]: Start difference. First operand 13004 states and 16271 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:31,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:02:31,581 INFO L93 Difference]: Finished difference Result 22789 states and 28625 transitions. [2021-11-07 17:02:31,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:02:31,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-07 17:02:31,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:02:31,620 INFO L225 Difference]: With dead ends: 22789 [2021-11-07 17:02:31,620 INFO L226 Difference]: Without dead ends: 9853 [2021-11-07 17:02:31,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:31,646 INFO L933 BasicCegarLoop]: 5745 mSDtfsCounter, 2046 mSDsluCounter, 4745 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 591.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 10490 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.66ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 646.02ms IncrementalHoareTripleChecker+Time [2021-11-07 17:02:31,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2046 Valid, 10490 Invalid, 100 Unknown, 0 Unchecked, 11.66ms Time], IncrementalHoareTripleChecker [21 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 646.02ms Time] [2021-11-07 17:02:31,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9853 states. [2021-11-07 17:02:31,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9853 to 9799. [2021-11-07 17:02:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9799 states, 9775 states have (on average 1.2620971867007673) internal successors, (12337), 9798 states have internal predecessors, (12337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9799 states to 9799 states and 12337 transitions. [2021-11-07 17:02:31,876 INFO L78 Accepts]: Start accepts. Automaton has 9799 states and 12337 transitions. Word has length 48 [2021-11-07 17:02:31,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:02:31,876 INFO L470 AbstractCegarLoop]: Abstraction has 9799 states and 12337 transitions. [2021-11-07 17:02:31,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:31,877 INFO L276 IsEmpty]: Start isEmpty. Operand 9799 states and 12337 transitions. [2021-11-07 17:02:31,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 17:02:31,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:02:31,880 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] [2021-11-07 17:02:31,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 17:02:31,880 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 17:02:31,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:02:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash -83071518, now seen corresponding path program 1 times [2021-11-07 17:02:31,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:02:31,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135874754] [2021-11-07 17:02:31,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:02:31,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:02:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:02:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:02:31,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:02:31,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135874754] [2021-11-07 17:02:31,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135874754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:02:31,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:02:31,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:02:31,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937212794] [2021-11-07 17:02:31,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:02:31,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:02:31,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:02:31,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:02:31,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:31,998 INFO L87 Difference]: Start difference. First operand 9799 states and 12337 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:32,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:02:32,664 INFO L93 Difference]: Finished difference Result 27459 states and 34586 transitions. [2021-11-07 17:02:32,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:02:32,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 17:02:32,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:02:32,710 INFO L225 Difference]: With dead ends: 27459 [2021-11-07 17:02:32,710 INFO L226 Difference]: Without dead ends: 18527 [2021-11-07 17:02:32,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:32,737 INFO L933 BasicCegarLoop]: 5855 mSDtfsCounter, 4654 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 368.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 10666 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.68ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 404.29ms IncrementalHoareTripleChecker+Time [2021-11-07 17:02:32,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4654 Valid, 10666 Invalid, 30 Unknown, 0 Unchecked, 13.68ms Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 404.29ms Time] [2021-11-07 17:02:32,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18527 states. [2021-11-07 17:02:33,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18527 to 18503. [2021-11-07 17:02:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18503 states, 18479 states have (on average 1.2619189350073057) internal successors, (23319), 18502 states have internal predecessors, (23319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:33,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18503 states to 18503 states and 23319 transitions. [2021-11-07 17:02:33,390 INFO L78 Accepts]: Start accepts. Automaton has 18503 states and 23319 transitions. Word has length 71 [2021-11-07 17:02:33,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:02:33,391 INFO L470 AbstractCegarLoop]: Abstraction has 18503 states and 23319 transitions. [2021-11-07 17:02:33,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:33,392 INFO L276 IsEmpty]: Start isEmpty. Operand 18503 states and 23319 transitions. [2021-11-07 17:02:33,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 17:02:33,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:02:33,396 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] [2021-11-07 17:02:33,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 17:02:33,397 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 17:02:33,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:02:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1362935196, now seen corresponding path program 1 times [2021-11-07 17:02:33,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:02:33,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588869944] [2021-11-07 17:02:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:02:33,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:02:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:02:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:02:33,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:02:33,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588869944] [2021-11-07 17:02:33,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588869944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:02:33,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:02:33,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:02:33,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455131186] [2021-11-07 17:02:33,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:02:33,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:02:33,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:02:33,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:02:33,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:33,564 INFO L87 Difference]: Start difference. First operand 18503 states and 23319 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:34,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:02:34,891 INFO L93 Difference]: Finished difference Result 44871 states and 56558 transitions. [2021-11-07 17:02:34,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:02:34,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 17:02:34,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:02:34,977 INFO L225 Difference]: With dead ends: 44871 [2021-11-07 17:02:34,978 INFO L226 Difference]: Without dead ends: 27235 [2021-11-07 17:02:35,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:35,025 INFO L933 BasicCegarLoop]: 9485 mSDtfsCounter, 4668 mSDsluCounter, 4798 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 799.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4668 SdHoareTripleChecker+Valid, 14283 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.99ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 841.93ms IncrementalHoareTripleChecker+Time [2021-11-07 17:02:35,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4668 Valid, 14283 Invalid, 32 Unknown, 0 Unchecked, 16.99ms Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 841.93ms Time] [2021-11-07 17:02:35,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27235 states. [2021-11-07 17:02:35,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27235 to 27190. [2021-11-07 17:02:35,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27190 states, 27166 states have (on average 1.262018699845395) internal successors, (34284), 27189 states have internal predecessors, (34284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:35,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27190 states to 27190 states and 34284 transitions. [2021-11-07 17:02:35,777 INFO L78 Accepts]: Start accepts. Automaton has 27190 states and 34284 transitions. Word has length 71 [2021-11-07 17:02:35,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:02:35,777 INFO L470 AbstractCegarLoop]: Abstraction has 27190 states and 34284 transitions. [2021-11-07 17:02:35,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:35,778 INFO L276 IsEmpty]: Start isEmpty. Operand 27190 states and 34284 transitions. [2021-11-07 17:02:35,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 17:02:35,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:02:35,781 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] [2021-11-07 17:02:35,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 17:02:35,782 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 17:02:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:02:35,783 INFO L85 PathProgramCache]: Analyzing trace with hash -2047198752, now seen corresponding path program 1 times [2021-11-07 17:02:35,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:02:35,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882688360] [2021-11-07 17:02:35,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:02:35,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:02:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:02:35,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:02:35,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:02:35,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882688360] [2021-11-07 17:02:35,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882688360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:02:35,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:02:35,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 17:02:35,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477961801] [2021-11-07 17:02:35,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:02:35,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:02:35,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:02:35,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:02:35,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:02:35,979 INFO L87 Difference]: Start difference. First operand 27190 states and 34284 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:36,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:02:36,493 INFO L93 Difference]: Finished difference Result 27190 states and 34284 transitions. [2021-11-07 17:02:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:02:36,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 17:02:36,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:02:36,555 INFO L225 Difference]: With dead ends: 27190 [2021-11-07 17:02:36,556 INFO L226 Difference]: Without dead ends: 27184 [2021-11-07 17:02:36,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.80ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:02:36,571 INFO L933 BasicCegarLoop]: 4825 mSDtfsCounter, 4774 mSDsluCounter, 4801 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4774 SdHoareTripleChecker+Valid, 9626 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.83ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.71ms IncrementalHoareTripleChecker+Time [2021-11-07 17:02:36,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4774 Valid, 9626 Invalid, 35 Unknown, 0 Unchecked, 16.83ms Time], IncrementalHoareTripleChecker [11 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 57.71ms Time] [2021-11-07 17:02:36,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27184 states. [2021-11-07 17:02:37,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27184 to 27184. [2021-11-07 17:02:37,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27184 states, 27163 states have (on average 1.2619371939771011) internal successors, (34278), 27183 states have internal predecessors, (34278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:37,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27184 states to 27184 states and 34278 transitions. [2021-11-07 17:02:37,408 INFO L78 Accepts]: Start accepts. Automaton has 27184 states and 34278 transitions. Word has length 72 [2021-11-07 17:02:37,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:02:37,409 INFO L470 AbstractCegarLoop]: Abstraction has 27184 states and 34278 transitions. [2021-11-07 17:02:37,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand 27184 states and 34278 transitions. [2021-11-07 17:02:37,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 17:02:37,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:02:37,412 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] [2021-11-07 17:02:37,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 17:02:37,413 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 17:02:37,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:02:37,413 INFO L85 PathProgramCache]: Analyzing trace with hash -262838269, now seen corresponding path program 1 times [2021-11-07 17:02:37,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:02:37,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656375254] [2021-11-07 17:02:37,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:02:37,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:02:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:02:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:02:37,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:02:37,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656375254] [2021-11-07 17:02:37,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656375254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:02:37,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:02:37,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 17:02:37,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935193032] [2021-11-07 17:02:37,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:02:37,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:02:37,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:02:37,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:02:37,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:02:37,624 INFO L87 Difference]: Start difference. First operand 27184 states and 34278 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:38,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:02:38,084 INFO L93 Difference]: Finished difference Result 27184 states and 34278 transitions. [2021-11-07 17:02:38,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:02:38,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 17:02:38,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:02:38,150 INFO L225 Difference]: With dead ends: 27184 [2021-11-07 17:02:38,151 INFO L226 Difference]: Without dead ends: 27178 [2021-11-07 17:02:38,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.31ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:02:38,167 INFO L933 BasicCegarLoop]: 4819 mSDtfsCounter, 4763 mSDsluCounter, 4798 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4763 SdHoareTripleChecker+Valid, 9617 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.55ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.20ms IncrementalHoareTripleChecker+Time [2021-11-07 17:02:38,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4763 Valid, 9617 Invalid, 35 Unknown, 0 Unchecked, 18.55ms Time], IncrementalHoareTripleChecker [14 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 56.20ms Time] [2021-11-07 17:02:38,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27178 states. [2021-11-07 17:02:39,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27178 to 27178. [2021-11-07 17:02:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27178 states, 27160 states have (on average 1.2618556701030927) internal successors, (34272), 27177 states have internal predecessors, (34272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27178 states to 27178 states and 34272 transitions. [2021-11-07 17:02:39,096 INFO L78 Accepts]: Start accepts. Automaton has 27178 states and 34272 transitions. Word has length 74 [2021-11-07 17:02:39,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:02:39,096 INFO L470 AbstractCegarLoop]: Abstraction has 27178 states and 34272 transitions. [2021-11-07 17:02:39,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:39,097 INFO L276 IsEmpty]: Start isEmpty. Operand 27178 states and 34272 transitions. [2021-11-07 17:02:39,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 17:02:39,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:02:39,100 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] [2021-11-07 17:02:39,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 17:02:39,100 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 17:02:39,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:02:39,101 INFO L85 PathProgramCache]: Analyzing trace with hash 815635110, now seen corresponding path program 1 times [2021-11-07 17:02:39,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:02:39,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732639395] [2021-11-07 17:02:39,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:02:39,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:02:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:02:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:02:39,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:02:39,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732639395] [2021-11-07 17:02:39,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732639395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:02:39,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:02:39,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 17:02:39,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197981903] [2021-11-07 17:02:39,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:02:39,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:02:39,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:02:39,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:02:39,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:02:39,260 INFO L87 Difference]: Start difference. First operand 27178 states and 34272 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:39,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:02:39,934 INFO L93 Difference]: Finished difference Result 27178 states and 34272 transitions. [2021-11-07 17:02:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:02:39,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 17:02:39,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:02:39,995 INFO L225 Difference]: With dead ends: 27178 [2021-11-07 17:02:39,995 INFO L226 Difference]: Without dead ends: 27172 [2021-11-07 17:02:40,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.63ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:02:40,015 INFO L933 BasicCegarLoop]: 4807 mSDtfsCounter, 4712 mSDsluCounter, 4814 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4712 SdHoareTripleChecker+Valid, 9621 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.15ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.11ms IncrementalHoareTripleChecker+Time [2021-11-07 17:02:40,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4712 Valid, 9621 Invalid, 62 Unknown, 0 Unchecked, 15.15ms Time], IncrementalHoareTripleChecker [20 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 102.11ms Time] [2021-11-07 17:02:40,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27172 states. [2021-11-07 17:02:40,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27172 to 27172. [2021-11-07 17:02:40,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27172 states, 27157 states have (on average 1.2617741282174024) internal successors, (34266), 27171 states have internal predecessors, (34266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27172 states to 27172 states and 34266 transitions. [2021-11-07 17:02:40,781 INFO L78 Accepts]: Start accepts. Automaton has 27172 states and 34266 transitions. Word has length 76 [2021-11-07 17:02:40,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:02:40,781 INFO L470 AbstractCegarLoop]: Abstraction has 27172 states and 34266 transitions. [2021-11-07 17:02:40,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:40,781 INFO L276 IsEmpty]: Start isEmpty. Operand 27172 states and 34266 transitions. [2021-11-07 17:02:40,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 17:02:40,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:02:40,785 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] [2021-11-07 17:02:40,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 17:02:40,785 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 17:02:40,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:02:40,786 INFO L85 PathProgramCache]: Analyzing trace with hash 2141434313, now seen corresponding path program 1 times [2021-11-07 17:02:40,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:02:40,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199093330] [2021-11-07 17:02:40,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:02:40,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:02:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:02:40,951 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:02:40,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:02:40,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199093330] [2021-11-07 17:02:40,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199093330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:02:40,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:02:40,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 17:02:40,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437833437] [2021-11-07 17:02:40,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:02:40,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:02:40,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:02:40,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:02:40,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:02:40,954 INFO L87 Difference]: Start difference. First operand 27172 states and 34266 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:41,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:02:41,619 INFO L93 Difference]: Finished difference Result 27172 states and 34266 transitions. [2021-11-07 17:02:41,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:02:41,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-07 17:02:41,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:02:41,683 INFO L225 Difference]: With dead ends: 27172 [2021-11-07 17:02:41,683 INFO L226 Difference]: Without dead ends: 26327 [2021-11-07 17:02:41,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.71ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:02:41,703 INFO L933 BasicCegarLoop]: 4810 mSDtfsCounter, 4744 mSDsluCounter, 4792 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4744 SdHoareTripleChecker+Valid, 9602 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.76ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.77ms IncrementalHoareTripleChecker+Time [2021-11-07 17:02:41,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4744 Valid, 9602 Invalid, 29 Unknown, 0 Unchecked, 13.76ms Time], IncrementalHoareTripleChecker [17 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 50.77ms Time] [2021-11-07 17:02:41,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26327 states. [2021-11-07 17:02:42,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26327 to 26327. [2021-11-07 17:02:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26327 states, 26315 states have (on average 1.2608018240547216) internal successors, (33178), 26326 states have internal predecessors, (33178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:42,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26327 states to 26327 states and 33178 transitions. [2021-11-07 17:02:42,486 INFO L78 Accepts]: Start accepts. Automaton has 26327 states and 33178 transitions. Word has length 78 [2021-11-07 17:02:42,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:02:42,487 INFO L470 AbstractCegarLoop]: Abstraction has 26327 states and 33178 transitions. [2021-11-07 17:02:42,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:42,487 INFO L276 IsEmpty]: Start isEmpty. Operand 26327 states and 33178 transitions. [2021-11-07 17:02:42,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 17:02:42,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:02:42,491 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:02:42,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 17:02:42,492 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 17:02:42,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:02:42,492 INFO L85 PathProgramCache]: Analyzing trace with hash 124598911, now seen corresponding path program 1 times [2021-11-07 17:02:42,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:02:42,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177375610] [2021-11-07 17:02:42,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:02:42,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:02:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:02:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:02:42,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:02:42,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177375610] [2021-11-07 17:02:42,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177375610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:02:42,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:02:42,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:02:42,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459907665] [2021-11-07 17:02:42,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:02:42,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:02:42,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:02:42,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:02:42,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:42,616 INFO L87 Difference]: Start difference. First operand 26327 states and 33178 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:44,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:02:44,509 INFO L93 Difference]: Finished difference Result 58816 states and 74329 transitions. [2021-11-07 17:02:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:02:44,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) 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 80 [2021-11-07 17:02:44,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:02:44,579 INFO L225 Difference]: With dead ends: 58816 [2021-11-07 17:02:44,580 INFO L226 Difference]: Without dead ends: 33356 [2021-11-07 17:02:44,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:44,632 INFO L933 BasicCegarLoop]: 6753 mSDtfsCounter, 1989 mSDsluCounter, 4704 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 747.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 11457 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.50ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 805.37ms IncrementalHoareTripleChecker+Time [2021-11-07 17:02:44,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1989 Valid, 11457 Invalid, 86 Unknown, 0 Unchecked, 14.50ms Time], IncrementalHoareTripleChecker [15 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 805.37ms Time] [2021-11-07 17:02:44,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33356 states. [2021-11-07 17:02:45,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33356 to 33332. [2021-11-07 17:02:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33332 states, 33320 states have (on average 1.2649459783913566) internal successors, (42148), 33331 states have internal predecessors, (42148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33332 states to 33332 states and 42148 transitions. [2021-11-07 17:02:45,606 INFO L78 Accepts]: Start accepts. Automaton has 33332 states and 42148 transitions. Word has length 80 [2021-11-07 17:02:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:02:45,606 INFO L470 AbstractCegarLoop]: Abstraction has 33332 states and 42148 transitions. [2021-11-07 17:02:45,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 33332 states and 42148 transitions. [2021-11-07 17:02:45,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-07 17:02:45,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:02:45,616 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:02:45,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 17:02:45,617 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 17:02:45,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:02:45,617 INFO L85 PathProgramCache]: Analyzing trace with hash 512191264, now seen corresponding path program 1 times [2021-11-07 17:02:45,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:02:45,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643931280] [2021-11-07 17:02:45,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:02:45,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:02:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:02:45,752 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 17:02:45,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:02:45,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643931280] [2021-11-07 17:02:45,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643931280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:02:45,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:02:45,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:02:45,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966983455] [2021-11-07 17:02:45,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:02:45,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:02:45,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:02:45,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:02:45,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:45,755 INFO L87 Difference]: Start difference. First operand 33332 states and 42148 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:47,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:02:47,307 INFO L93 Difference]: Finished difference Result 72802 states and 92221 transitions. [2021-11-07 17:02:47,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:02:47,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 117 [2021-11-07 17:02:47,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:02:47,374 INFO L225 Difference]: With dead ends: 72802 [2021-11-07 17:02:47,374 INFO L226 Difference]: Without dead ends: 39551 [2021-11-07 17:02:47,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:47,416 INFO L933 BasicCegarLoop]: 6754 mSDtfsCounter, 1983 mSDsluCounter, 4717 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 498.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 11471 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.94ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 551.51ms IncrementalHoareTripleChecker+Time [2021-11-07 17:02:47,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 11471 Invalid, 79 Unknown, 0 Unchecked, 8.94ms Time], IncrementalHoareTripleChecker [13 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 551.51ms Time] [2021-11-07 17:02:47,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39551 states. [2021-11-07 17:02:48,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39551 to 39527. [2021-11-07 17:02:48,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39527 states, 39515 states have (on average 1.2672909021890422) internal successors, (50077), 39526 states have internal predecessors, (50077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:48,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39527 states to 39527 states and 50077 transitions. [2021-11-07 17:02:48,317 INFO L78 Accepts]: Start accepts. Automaton has 39527 states and 50077 transitions. Word has length 117 [2021-11-07 17:02:48,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:02:48,317 INFO L470 AbstractCegarLoop]: Abstraction has 39527 states and 50077 transitions. [2021-11-07 17:02:48,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:48,318 INFO L276 IsEmpty]: Start isEmpty. Operand 39527 states and 50077 transitions. [2021-11-07 17:02:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-07 17:02:48,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:02:48,329 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:02:48,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 17:02:48,330 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 17:02:48,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:02:48,330 INFO L85 PathProgramCache]: Analyzing trace with hash 934893090, now seen corresponding path program 1 times [2021-11-07 17:02:48,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:02:48,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532801606] [2021-11-07 17:02:48,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:02:48,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:02:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:02:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 17:02:48,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:02:48,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532801606] [2021-11-07 17:02:48,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532801606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:02:48,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:02:48,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:02:48,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980403105] [2021-11-07 17:02:48,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:02:48,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:02:48,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:02:48,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:02:48,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:48,635 INFO L87 Difference]: Start difference. First operand 39527 states and 50077 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:50,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:02:50,457 INFO L93 Difference]: Finished difference Result 85210 states and 108115 transitions. [2021-11-07 17:02:50,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:02:50,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 117 [2021-11-07 17:02:50,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:02:50,537 INFO L225 Difference]: With dead ends: 85210 [2021-11-07 17:02:50,538 INFO L226 Difference]: Without dead ends: 46550 [2021-11-07 17:02:50,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:50,579 INFO L933 BasicCegarLoop]: 6754 mSDtfsCounter, 2795 mSDsluCounter, 3908 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 725.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2795 SdHoareTripleChecker+Valid, 10662 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.59ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 772.47ms IncrementalHoareTripleChecker+Time [2021-11-07 17:02:50,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2795 Valid, 10662 Invalid, 85 Unknown, 0 Unchecked, 8.59ms Time], IncrementalHoareTripleChecker [16 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 772.47ms Time] [2021-11-07 17:02:50,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46550 states. [2021-11-07 17:02:51,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46550 to 46526. [2021-11-07 17:02:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46526 states, 46514 states have (on average 1.269316764844993) internal successors, (59041), 46525 states have internal predecessors, (59041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46526 states to 46526 states and 59041 transitions. [2021-11-07 17:02:51,767 INFO L78 Accepts]: Start accepts. Automaton has 46526 states and 59041 transitions. Word has length 117 [2021-11-07 17:02:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:02:51,768 INFO L470 AbstractCegarLoop]: Abstraction has 46526 states and 59041 transitions. [2021-11-07 17:02:51,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 46526 states and 59041 transitions. [2021-11-07 17:02:51,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-07 17:02:51,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:02:51,785 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:02:51,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 17:02:51,786 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 17:02:51,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:02:51,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1208625008, now seen corresponding path program 1 times [2021-11-07 17:02:51,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:02:51,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938658965] [2021-11-07 17:02:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:02:51,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:02:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:02:51,915 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 17:02:51,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:02:51,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938658965] [2021-11-07 17:02:51,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938658965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:02:51,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:02:51,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:02:51,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353050483] [2021-11-07 17:02:51,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:02:51,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:02:51,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:02:51,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:02:51,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:51,918 INFO L87 Difference]: Start difference. First operand 46526 states and 59041 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:54,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:02:54,205 INFO L93 Difference]: Finished difference Result 99196 states and 126019 transitions. [2021-11-07 17:02:54,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:02:54,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 152 [2021-11-07 17:02:54,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:02:54,296 INFO L225 Difference]: With dead ends: 99196 [2021-11-07 17:02:54,296 INFO L226 Difference]: Without dead ends: 53537 [2021-11-07 17:02:54,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:54,350 INFO L933 BasicCegarLoop]: 5824 mSDtfsCounter, 1986 mSDsluCounter, 4715 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 820.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1986 SdHoareTripleChecker+Valid, 10539 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.53ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 883.50ms IncrementalHoareTripleChecker+Time [2021-11-07 17:02:54,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1986 Valid, 10539 Invalid, 81 Unknown, 0 Unchecked, 9.53ms Time], IncrementalHoareTripleChecker [12 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 883.50ms Time] [2021-11-07 17:02:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53537 states. [2021-11-07 17:02:55,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53537 to 53513. [2021-11-07 17:02:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53513 states, 53501 states have (on average 1.2708734416179137) internal successors, (67993), 53512 states have internal predecessors, (67993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:55,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53513 states to 53513 states and 67993 transitions. [2021-11-07 17:02:55,623 INFO L78 Accepts]: Start accepts. Automaton has 53513 states and 67993 transitions. Word has length 152 [2021-11-07 17:02:55,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:02:55,623 INFO L470 AbstractCegarLoop]: Abstraction has 53513 states and 67993 transitions. [2021-11-07 17:02:55,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand 53513 states and 67993 transitions. [2021-11-07 17:02:55,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-07 17:02:55,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:02:55,636 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:02:55,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 17:02:55,637 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 17:02:55,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:02:55,637 INFO L85 PathProgramCache]: Analyzing trace with hash -785923182, now seen corresponding path program 1 times [2021-11-07 17:02:55,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:02:55,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086004115] [2021-11-07 17:02:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:02:55,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:02:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:02:55,903 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 17:02:55,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:02:55,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086004115] [2021-11-07 17:02:55,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086004115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:02:55,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:02:55,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:02:55,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236448878] [2021-11-07 17:02:55,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:02:55,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:02:55,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:02:55,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:02:55,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:55,906 INFO L87 Difference]: Start difference. First operand 53513 states and 67993 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:58,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:02:58,082 INFO L93 Difference]: Finished difference Result 113176 states and 143935 transitions. [2021-11-07 17:02:58,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:02:58,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 152 [2021-11-07 17:02:58,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:02:58,200 INFO L225 Difference]: With dead ends: 113176 [2021-11-07 17:02:58,200 INFO L226 Difference]: Without dead ends: 60530 [2021-11-07 17:02:58,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:02:58,254 INFO L933 BasicCegarLoop]: 6754 mSDtfsCounter, 1995 mSDsluCounter, 4707 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 632.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1995 SdHoareTripleChecker+Valid, 11461 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.71ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 693.95ms IncrementalHoareTripleChecker+Time [2021-11-07 17:02:58,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1995 Valid, 11461 Invalid, 83 Unknown, 0 Unchecked, 9.71ms Time], IncrementalHoareTripleChecker [13 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 693.95ms Time] [2021-11-07 17:02:58,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60530 states. [2021-11-07 17:02:59,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60530 to 60506. [2021-11-07 17:02:59,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60506 states, 60494 states have (on average 1.2720435084471187) internal successors, (76951), 60505 states have internal predecessors, (76951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:59,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60506 states to 60506 states and 76951 transitions. [2021-11-07 17:02:59,928 INFO L78 Accepts]: Start accepts. Automaton has 60506 states and 76951 transitions. Word has length 152 [2021-11-07 17:02:59,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:02:59,929 INFO L470 AbstractCegarLoop]: Abstraction has 60506 states and 76951 transitions. [2021-11-07 17:02:59,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:02:59,929 INFO L276 IsEmpty]: Start isEmpty. Operand 60506 states and 76951 transitions. [2021-11-07 17:02:59,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-07 17:02:59,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:02:59,953 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:02:59,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 17:02:59,954 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-07 17:02:59,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:02:59,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1053030962, now seen corresponding path program 1 times [2021-11-07 17:02:59,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:02:59,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322074635] [2021-11-07 17:02:59,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:02:59,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:03:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:03:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 17:03:00,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:03:00,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322074635] [2021-11-07 17:03:00,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322074635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:03:00,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:03:00,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 17:03:00,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134494202] [2021-11-07 17:03:00,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:03:00,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:03:00,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:03:00,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:03:00,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:03:00,091 INFO L87 Difference]: Start difference. First operand 60506 states and 76951 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:03:01,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:03:04,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:03:04,492 INFO L93 Difference]: Finished difference Result 186615 states and 237419 transitions. [2021-11-07 17:03:04,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 17:03:04,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 179 [2021-11-07 17:03:04,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:03:04,743 INFO L225 Difference]: With dead ends: 186615 [2021-11-07 17:03:04,743 INFO L226 Difference]: Without dead ends: 126976 [2021-11-07 17:03:04,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.27ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:03:04,825 INFO L933 BasicCegarLoop]: 8944 mSDtfsCounter, 9609 mSDsluCounter, 13117 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1414.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9609 SdHoareTripleChecker+Valid, 22061 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.60ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1497.70ms IncrementalHoareTripleChecker+Time [2021-11-07 17:03:04,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9609 Valid, 22061 Invalid, 134 Unknown, 0 Unchecked, 22.60ms Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 1497.70ms Time] [2021-11-07 17:03:04,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126976 states.