./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.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 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 17:27:03,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 17:27:03,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 17:27:03,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 17:27:03,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 17:27:03,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 17:27:03,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 17:27:03,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 17:27:03,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 17:27:03,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 17:27:03,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 17:27:03,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 17:27:03,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 17:27:03,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 17:27:03,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 17:27:03,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 17:27:03,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 17:27:03,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 17:27:03,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 17:27:03,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 17:27:03,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 17:27:03,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 17:27:03,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 17:27:03,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 17:27:03,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 17:27:03,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 17:27:03,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 17:27:03,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 17:27:03,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 17:27:03,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 17:27:03,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 17:27:03,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 17:27:03,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 17:27:03,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 17:27:03,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 17:27:03,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 17:27:03,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 17:27:03,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 17:27:03,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 17:27:03,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 17:27:03,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 17:27:03,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 17:27:03,876 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 17:27:03,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 17:27:03,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 17:27:03,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 17:27:03,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 17:27:03,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 17:27:03,878 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 17:27:03,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 17:27:03,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 17:27:03,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 17:27:03,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 17:27:03,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 17:27:03,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 17:27:03,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 17:27:03,880 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 17:27:03,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 17:27:03,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 17:27:03,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 17:27:03,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 17:27:03,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:27:03,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 17:27:03,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 17:27:03,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 17:27:03,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 17:27:03,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 17:27:03,881 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 17:27:03,882 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 17:27:03,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 17:27:03,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 17:27:03,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a [2021-11-07 17:27:04,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 17:27:04,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 17:27:04,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 17:27:04,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 17:27:04,105 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 17:27:04,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-07 17:27:04,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3210ca397/475760c2c8fa4e7aaee5475c34cd35f8/FLAG42f54294f [2021-11-07 17:27:04,768 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 17:27:04,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-07 17:27:04,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3210ca397/475760c2c8fa4e7aaee5475c34cd35f8/FLAG42f54294f [2021-11-07 17:27:05,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3210ca397/475760c2c8fa4e7aaee5475c34cd35f8 [2021-11-07 17:27:05,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 17:27:05,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 17:27:05,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 17:27:05,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 17:27:05,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 17:27:05,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:27:05" (1/1) ... [2021-11-07 17:27:05,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11887c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:27:05, skipping insertion in model container [2021-11-07 17:27:05,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:27:05" (1/1) ... [2021-11-07 17:27:05,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 17:27:05,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 17:27:06,962 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2021-11-07 17:27:06,965 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2021-11-07 17:27:06,965 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2021-11-07 17:27:06,965 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2021-11-07 17:27:06,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:27:07,021 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 17:27:07,266 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2021-11-07 17:27:07,267 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2021-11-07 17:27:07,267 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2021-11-07 17:27:07,268 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2021-11-07 17:27:07,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:27:07,386 INFO L208 MainTranslator]: Completed translation [2021-11-07 17:27:07,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:27:07 WrapperNode [2021-11-07 17:27:07,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 17:27:07,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 17:27:07,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 17:27:07,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 17:27:07,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:27:07" (1/1) ... [2021-11-07 17:27:07,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:27:07" (1/1) ... [2021-11-07 17:27:07,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 17:27:07,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 17:27:07,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 17:27:07,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 17:27:07,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:27:07" (1/1) ... [2021-11-07 17:27:07,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:27:07" (1/1) ... [2021-11-07 17:27:07,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:27:07" (1/1) ... [2021-11-07 17:27:07,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:27:07" (1/1) ... [2021-11-07 17:27:08,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:27:07" (1/1) ... [2021-11-07 17:27:08,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:27:07" (1/1) ... [2021-11-07 17:27:08,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:27:07" (1/1) ... [2021-11-07 17:27:08,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 17:27:08,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 17:27:08,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 17:27:08,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 17:27:08,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:27:07" (1/1) ... [2021-11-07 17:27:08,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:27:08,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 17:27:08,309 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 17:27:08,329 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 17:27:08,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 17:27:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 17:27:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 17:27:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 17:27:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 17:27:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 17:27:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 17:27:08,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 17:27:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 17:27:08,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 17:27:08,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 17:27:08,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 17:27:08,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 17:27:08,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 17:27:08,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 17:27:14,575 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 17:27:14,576 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 17:27:14,576 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 17:27:14,576 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 17:27:14,577 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 17:27:14,577 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 17:27:14,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 17:27:14,603 INFO L299 CfgBuilder]: Removed 3826 assume(true) statements. [2021-11-07 17:27:14,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:27:14 BoogieIcfgContainer [2021-11-07 17:27:14,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 17:27:14,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 17:27:14,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 17:27:14,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 17:27:14,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:27:05" (1/3) ... [2021-11-07 17:27:14,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622848d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:27:14, skipping insertion in model container [2021-11-07 17:27:14,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:27:07" (2/3) ... [2021-11-07 17:27:14,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622848d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:27:14, skipping insertion in model container [2021-11-07 17:27:14,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:27:14" (3/3) ... [2021-11-07 17:27:14,615 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-07 17:27:14,618 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 17:27:14,619 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2021-11-07 17:27:14,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 17:27:14,673 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 17:27:14,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2021-11-07 17:27:14,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 3689 states, 3628 states have (on average 1.3321389195148843) internal successors, (4833), 3688 states have internal predecessors, (4833), 0 states have call successors, (0), 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 17:27:14,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 17:27:14,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:27:14,732 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] [2021-11-07 17:27:14,732 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-07 17:27:14,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:27:14,736 INFO L85 PathProgramCache]: Analyzing trace with hash -967687657, now seen corresponding path program 1 times [2021-11-07 17:27:14,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:27:14,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852892461] [2021-11-07 17:27:14,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:27:14,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:27:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:27:15,179 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 17:27:15,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:27:15,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852892461] [2021-11-07 17:27:15,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852892461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:27:15,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:27:15,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:27:15,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381113924] [2021-11-07 17:27:15,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:27:15,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:27:15,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:27:15,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:27:15,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:15,227 INFO L87 Difference]: Start difference. First operand has 3689 states, 3628 states have (on average 1.3321389195148843) internal successors, (4833), 3688 states have internal predecessors, (4833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 17:27:16,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:27:16,343 INFO L93 Difference]: Finished difference Result 10272 states and 13449 transitions. [2021-11-07 17:27:16,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:27:16,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-11-07 17:27:16,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:27:16,384 INFO L225 Difference]: With dead ends: 10272 [2021-11-07 17:27:16,384 INFO L226 Difference]: Without dead ends: 6399 [2021-11-07 17:27:16,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:16,399 INFO L933 BasicCegarLoop]: 4725 mSDtfsCounter, 4046 mSDsluCounter, 4475 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 846.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4046 SdHoareTripleChecker+Valid, 9200 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.09ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 894.13ms IncrementalHoareTripleChecker+Time [2021-11-07 17:27:16,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4046 Valid, 9200 Invalid, 51 Unknown, 0 Unchecked, 22.09ms Time], IncrementalHoareTripleChecker [13 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 894.13ms Time] [2021-11-07 17:27:16,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6399 states. [2021-11-07 17:27:16,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6399 to 5969. [2021-11-07 17:27:16,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5969 states, 5908 states have (on average 1.2808056872037914) internal successors, (7567), 5968 states have internal predecessors, (7567), 0 states have call successors, (0), 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 17:27:16,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5969 states to 5969 states and 7567 transitions. [2021-11-07 17:27:16,585 INFO L78 Accepts]: Start accepts. Automaton has 5969 states and 7567 transitions. Word has length 43 [2021-11-07 17:27:16,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:27:16,586 INFO L470 AbstractCegarLoop]: Abstraction has 5969 states and 7567 transitions. [2021-11-07 17:27:16,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 17:27:16,586 INFO L276 IsEmpty]: Start isEmpty. Operand 5969 states and 7567 transitions. [2021-11-07 17:27:16,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 17:27:16,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:27:16,588 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] [2021-11-07 17:27:16,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 17:27:16,589 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-07 17:27:16,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:27:16,589 INFO L85 PathProgramCache]: Analyzing trace with hash -113139560, now seen corresponding path program 1 times [2021-11-07 17:27:16,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:27:16,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649665785] [2021-11-07 17:27:16,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:27:16,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:27:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:27:16,754 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 17:27:16,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:27:16,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649665785] [2021-11-07 17:27:16,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649665785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:27:16,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:27:16,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:27:16,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642741498] [2021-11-07 17:27:16,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:27:16,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:27:16,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:27:16,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:27:16,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:16,757 INFO L87 Difference]: Start difference. First operand 5969 states and 7567 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 17:27:17,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:27:17,533 INFO L93 Difference]: Finished difference Result 17513 states and 22286 transitions. [2021-11-07 17:27:17,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:27:17,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-07 17:27:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:27:17,565 INFO L225 Difference]: With dead ends: 17513 [2021-11-07 17:27:17,565 INFO L226 Difference]: Without dead ends: 11620 [2021-11-07 17:27:17,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:17,580 INFO L933 BasicCegarLoop]: 4415 mSDtfsCounter, 4143 mSDsluCounter, 4377 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 462.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4143 SdHoareTripleChecker+Valid, 8792 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.43ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 497.98ms IncrementalHoareTripleChecker+Time [2021-11-07 17:27:17,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4143 Valid, 8792 Invalid, 34 Unknown, 0 Unchecked, 11.43ms Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 497.98ms Time] [2021-11-07 17:27:17,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11620 states. [2021-11-07 17:27:17,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11620 to 11576. [2021-11-07 17:27:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11576 states, 11515 states have (on average 1.2825010855405992) internal successors, (14768), 11575 states have internal predecessors, (14768), 0 states have call successors, (0), 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 17:27:17,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11576 states to 11576 states and 14768 transitions. [2021-11-07 17:27:17,823 INFO L78 Accepts]: Start accepts. Automaton has 11576 states and 14768 transitions. Word has length 45 [2021-11-07 17:27:17,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:27:17,825 INFO L470 AbstractCegarLoop]: Abstraction has 11576 states and 14768 transitions. [2021-11-07 17:27:17,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 17:27:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 11576 states and 14768 transitions. [2021-11-07 17:27:17,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 17:27:17,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:27:17,835 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] [2021-11-07 17:27:17,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 17:27:17,836 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-07 17:27:17,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:27:17,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1292504363, now seen corresponding path program 1 times [2021-11-07 17:27:17,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:27:17,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439942378] [2021-11-07 17:27:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:27:17,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:27:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:27:17,957 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 17:27:17,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:27:17,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439942378] [2021-11-07 17:27:17,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439942378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:27:17,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:27:17,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:27:17,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356707462] [2021-11-07 17:27:17,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:27:17,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:27:17,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:27:17,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:27:17,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:17,959 INFO L87 Difference]: Start difference. First operand 11576 states and 14768 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 17:27:18,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:27:18,649 INFO L93 Difference]: Finished difference Result 32556 states and 41586 transitions. [2021-11-07 17:27:18,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:27:18,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-07 17:27:18,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:27:18,711 INFO L225 Difference]: With dead ends: 32556 [2021-11-07 17:27:18,711 INFO L226 Difference]: Without dead ends: 21056 [2021-11-07 17:27:18,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:18,737 INFO L933 BasicCegarLoop]: 4408 mSDtfsCounter, 3818 mSDsluCounter, 4125 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 323.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3818 SdHoareTripleChecker+Valid, 8533 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.89ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 362.20ms IncrementalHoareTripleChecker+Time [2021-11-07 17:27:18,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3818 Valid, 8533 Invalid, 40 Unknown, 0 Unchecked, 9.89ms Time], IncrementalHoareTripleChecker [14 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 362.20ms Time] [2021-11-07 17:27:18,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21056 states. [2021-11-07 17:27:19,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21056 to 20518. [2021-11-07 17:27:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20518 states, 20457 states have (on average 1.2861123331866842) internal successors, (26310), 20517 states have internal predecessors, (26310), 0 states have call successors, (0), 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 17:27:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20518 states to 20518 states and 26310 transitions. [2021-11-07 17:27:19,282 INFO L78 Accepts]: Start accepts. Automaton has 20518 states and 26310 transitions. Word has length 46 [2021-11-07 17:27:19,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:27:19,282 INFO L470 AbstractCegarLoop]: Abstraction has 20518 states and 26310 transitions. [2021-11-07 17:27:19,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 17:27:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 20518 states and 26310 transitions. [2021-11-07 17:27:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 17:27:19,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:27:19,284 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 17:27:19,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 17:27:19,284 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-07 17:27:19,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:27:19,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1026351272, now seen corresponding path program 1 times [2021-11-07 17:27:19,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:27:19,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207416004] [2021-11-07 17:27:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:27:19,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:27:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:27:19,419 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 17:27:19,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:27:19,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207416004] [2021-11-07 17:27:19,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207416004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:27:19,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:27:19,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:27:19,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286467644] [2021-11-07 17:27:19,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:27:19,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:27:19,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:27:19,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:27:19,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:19,421 INFO L87 Difference]: Start difference. First operand 20518 states and 26310 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 17:27:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:27:20,172 INFO L93 Difference]: Finished difference Result 35921 states and 46039 transitions. [2021-11-07 17:27:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:27:20,173 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 17:27:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:27:20,209 INFO L225 Difference]: With dead ends: 35921 [2021-11-07 17:27:20,210 INFO L226 Difference]: Without dead ends: 15479 [2021-11-07 17:27:20,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:20,236 INFO L933 BasicCegarLoop]: 4916 mSDtfsCounter, 1823 mSDsluCounter, 4258 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 435.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 9174 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.44ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 490.17ms IncrementalHoareTripleChecker+Time [2021-11-07 17:27:20,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 9174 Invalid, 100 Unknown, 0 Unchecked, 14.44ms Time], IncrementalHoareTripleChecker [21 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 490.17ms Time] [2021-11-07 17:27:20,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15479 states. [2021-11-07 17:27:20,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15479 to 15361. [2021-11-07 17:27:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15361 states, 15300 states have (on average 1.2822875816993464) internal successors, (19619), 15360 states have internal predecessors, (19619), 0 states have call successors, (0), 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 17:27:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15361 states to 15361 states and 19619 transitions. [2021-11-07 17:27:20,599 INFO L78 Accepts]: Start accepts. Automaton has 15361 states and 19619 transitions. Word has length 48 [2021-11-07 17:27:20,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:27:20,600 INFO L470 AbstractCegarLoop]: Abstraction has 15361 states and 19619 transitions. [2021-11-07 17:27:20,600 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 17:27:20,601 INFO L276 IsEmpty]: Start isEmpty. Operand 15361 states and 19619 transitions. [2021-11-07 17:27:20,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 17:27:20,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:27:20,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:27:20,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 17:27:20,602 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-07 17:27:20,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:27:20,602 INFO L85 PathProgramCache]: Analyzing trace with hash 950652540, now seen corresponding path program 1 times [2021-11-07 17:27:20,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:27:20,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409303505] [2021-11-07 17:27:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:27:20,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:27:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:27:20,696 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 17:27:20,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:27:20,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409303505] [2021-11-07 17:27:20,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409303505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:27:20,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:27:20,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:27:20,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319094207] [2021-11-07 17:27:20,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:27:20,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:27:20,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:27:20,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:27:20,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:20,698 INFO L87 Difference]: Start difference. First operand 15361 states and 19619 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 17:27:21,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:27:21,580 INFO L93 Difference]: Finished difference Result 40436 states and 51756 transitions. [2021-11-07 17:27:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:27:21,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-07 17:27:21,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:27:21,633 INFO L225 Difference]: With dead ends: 40436 [2021-11-07 17:27:21,633 INFO L226 Difference]: Without dead ends: 25151 [2021-11-07 17:27:21,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:21,658 INFO L933 BasicCegarLoop]: 4412 mSDtfsCounter, 3784 mSDsluCounter, 4349 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 402.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3784 SdHoareTripleChecker+Valid, 8761 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.36ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 471.22ms IncrementalHoareTripleChecker+Time [2021-11-07 17:27:21,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3784 Valid, 8761 Invalid, 80 Unknown, 0 Unchecked, 9.36ms Time], IncrementalHoareTripleChecker [9 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 471.22ms Time] [2021-11-07 17:27:21,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25151 states. [2021-11-07 17:27:22,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25151 to 24707. [2021-11-07 17:27:22,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24707 states, 24646 states have (on average 1.2857664529741135) internal successors, (31689), 24706 states have internal predecessors, (31689), 0 states have call successors, (0), 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 17:27:22,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24707 states to 24707 states and 31689 transitions. [2021-11-07 17:27:22,205 INFO L78 Accepts]: Start accepts. Automaton has 24707 states and 31689 transitions. Word has length 49 [2021-11-07 17:27:22,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:27:22,205 INFO L470 AbstractCegarLoop]: Abstraction has 24707 states and 31689 transitions. [2021-11-07 17:27:22,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 17:27:22,206 INFO L276 IsEmpty]: Start isEmpty. Operand 24707 states and 31689 transitions. [2021-11-07 17:27:22,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 17:27:22,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:27:22,207 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 17:27:22,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 17:27:22,207 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-07 17:27:22,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:27:22,208 INFO L85 PathProgramCache]: Analyzing trace with hash -960392490, now seen corresponding path program 1 times [2021-11-07 17:27:22,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:27:22,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630459438] [2021-11-07 17:27:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:27:22,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:27:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:27:22,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:27:22,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:27:22,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630459438] [2021-11-07 17:27:22,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630459438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:27:22,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:27:22,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:27:22,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688771797] [2021-11-07 17:27:22,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:27:22,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:27:22,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:27:22,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:27:22,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:22,289 INFO L87 Difference]: Start difference. First operand 24707 states and 31689 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:27:23,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:27:23,420 INFO L93 Difference]: Finished difference Result 72950 states and 93628 transitions. [2021-11-07 17:27:23,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:27:23,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 17:27:23,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:27:23,510 INFO L225 Difference]: With dead ends: 72950 [2021-11-07 17:27:23,510 INFO L226 Difference]: Without dead ends: 48319 [2021-11-07 17:27:23,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:23,552 INFO L933 BasicCegarLoop]: 4918 mSDtfsCounter, 4316 mSDsluCounter, 4407 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 313.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 9325 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.15ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 340.52ms IncrementalHoareTripleChecker+Time [2021-11-07 17:27:23,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4316 Valid, 9325 Invalid, 21 Unknown, 0 Unchecked, 9.15ms Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 340.52ms Time] [2021-11-07 17:27:23,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48319 states. [2021-11-07 17:27:24,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48319 to 48009. [2021-11-07 17:27:24,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48009 states, 47948 states have (on average 1.2865604404771835) internal successors, (61688), 48008 states have internal predecessors, (61688), 0 states have call successors, (0), 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 17:27:24,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48009 states to 48009 states and 61688 transitions. [2021-11-07 17:27:24,404 INFO L78 Accepts]: Start accepts. Automaton has 48009 states and 61688 transitions. Word has length 61 [2021-11-07 17:27:24,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:27:24,405 INFO L470 AbstractCegarLoop]: Abstraction has 48009 states and 61688 transitions. [2021-11-07 17:27:24,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:27:24,405 INFO L276 IsEmpty]: Start isEmpty. Operand 48009 states and 61688 transitions. [2021-11-07 17:27:24,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 17:27:24,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:27:24,406 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:27:24,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 17:27:24,407 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-07 17:27:24,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:27:24,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1943570088, now seen corresponding path program 1 times [2021-11-07 17:27:24,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:27:24,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433007362] [2021-11-07 17:27:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:27:24,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:27:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:27:24,503 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 17:27:24,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:27:24,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433007362] [2021-11-07 17:27:24,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433007362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:27:24,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:27:24,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:27:24,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492041720] [2021-11-07 17:27:24,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:27:24,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:27:24,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:27:24,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:27:24,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:24,506 INFO L87 Difference]: Start difference. First operand 48009 states and 61688 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 17:27:26,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:27:26,112 INFO L93 Difference]: Finished difference Result 142595 states and 183443 transitions. [2021-11-07 17:27:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:27:26,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 17:27:26,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:27:26,584 INFO L225 Difference]: With dead ends: 142595 [2021-11-07 17:27:26,584 INFO L226 Difference]: Without dead ends: 94713 [2021-11-07 17:27:26,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:26,649 INFO L933 BasicCegarLoop]: 4981 mSDtfsCounter, 4122 mSDsluCounter, 4396 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 430.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4122 SdHoareTripleChecker+Valid, 9377 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.39ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 463.39ms IncrementalHoareTripleChecker+Time [2021-11-07 17:27:26,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4122 Valid, 9377 Invalid, 30 Unknown, 0 Unchecked, 6.39ms Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 463.39ms Time] [2021-11-07 17:27:26,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94713 states. [2021-11-07 17:27:28,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94713 to 94669. [2021-11-07 17:27:28,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94669 states, 94608 states have (on average 1.2865296803652968) internal successors, (121716), 94668 states have internal predecessors, (121716), 0 states have call successors, (0), 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 17:27:28,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94669 states to 94669 states and 121716 transitions. [2021-11-07 17:27:28,862 INFO L78 Accepts]: Start accepts. Automaton has 94669 states and 121716 transitions. Word has length 74 [2021-11-07 17:27:28,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:27:28,863 INFO L470 AbstractCegarLoop]: Abstraction has 94669 states and 121716 transitions. [2021-11-07 17:27:28,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 17:27:28,864 INFO L276 IsEmpty]: Start isEmpty. Operand 94669 states and 121716 transitions. [2021-11-07 17:27:28,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 17:27:28,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:27:28,865 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:27:28,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 17:27:28,866 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-07 17:27:28,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:27:28,866 INFO L85 PathProgramCache]: Analyzing trace with hash 663706410, now seen corresponding path program 1 times [2021-11-07 17:27:28,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:27:28,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587054916] [2021-11-07 17:27:28,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:27:28,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:27:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:27:28,947 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 17:27:28,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:27:28,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587054916] [2021-11-07 17:27:28,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587054916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:27:28,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:27:28,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:27:28,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563767366] [2021-11-07 17:27:28,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:27:28,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:27:28,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:27:28,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:27:28,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:28,952 INFO L87 Difference]: Start difference. First operand 94669 states and 121716 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 17:27:31,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:27:31,794 INFO L93 Difference]: Finished difference Result 235947 states and 303563 transitions. [2021-11-07 17:27:31,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:27:31,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 17:27:31,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:27:32,072 INFO L225 Difference]: With dead ends: 235947 [2021-11-07 17:27:32,072 INFO L226 Difference]: Without dead ends: 141405 [2021-11-07 17:27:32,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:27:32,328 INFO L933 BasicCegarLoop]: 8538 mSDtfsCounter, 4172 mSDsluCounter, 4347 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 360.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4172 SdHoareTripleChecker+Valid, 12885 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.33ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 388.37ms IncrementalHoareTripleChecker+Time [2021-11-07 17:27:32,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4172 Valid, 12885 Invalid, 32 Unknown, 0 Unchecked, 7.33ms Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 388.37ms Time] [2021-11-07 17:27:32,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141405 states. [2021-11-07 17:27:34,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141405 to 141144. [2021-11-07 17:27:34,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141144 states, 141083 states have (on average 1.286894948363729) internal successors, (181559), 141143 states have internal predecessors, (181559), 0 states have call successors, (0), 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 17:27:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141144 states to 141144 states and 181559 transitions. [2021-11-07 17:27:35,240 INFO L78 Accepts]: Start accepts. Automaton has 141144 states and 181559 transitions. Word has length 74 [2021-11-07 17:27:35,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:27:35,240 INFO L470 AbstractCegarLoop]: Abstraction has 141144 states and 181559 transitions. [2021-11-07 17:27:35,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 17:27:35,240 INFO L276 IsEmpty]: Start isEmpty. Operand 141144 states and 181559 transitions. [2021-11-07 17:27:35,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 17:27:35,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:27:35,241 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] [2021-11-07 17:27:35,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 17:27:35,241 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-07 17:27:35,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:27:35,242 INFO L85 PathProgramCache]: Analyzing trace with hash 820923817, now seen corresponding path program 1 times [2021-11-07 17:27:35,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:27:35,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739231190] [2021-11-07 17:27:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:27:35,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:27:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:27:35,353 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 17:27:35,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:27:35,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739231190] [2021-11-07 17:27:35,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739231190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:27:35,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:27:35,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:27:35,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878869385] [2021-11-07 17:27:35,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:27:35,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:27:35,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:27:35,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:27:35,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:27:35,355 INFO L87 Difference]: Start difference. First operand 141144 states and 181559 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 17:27:37,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:27:37,723 INFO L93 Difference]: Finished difference Result 141144 states and 181559 transitions. [2021-11-07 17:27:37,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:27:37,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 75 [2021-11-07 17:27:37,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:27:37,991 INFO L225 Difference]: With dead ends: 141144 [2021-11-07 17:27:37,991 INFO L226 Difference]: Without dead ends: 141138 [2021-11-07 17:27:38,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:27:38,040 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 4356 mSDsluCounter, 4305 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4356 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.18ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.55ms IncrementalHoareTripleChecker+Time [2021-11-07 17:27:38,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4356 Valid, 8715 Invalid, 115 Unknown, 0 Unchecked, 10.18ms Time], IncrementalHoareTripleChecker [37 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 72.55ms Time] [2021-11-07 17:27:38,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141138 states. [2021-11-07 17:27:40,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141138 to 141138. [2021-11-07 17:27:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141138 states, 141080 states have (on average 1.2868797845194215) internal successors, (181553), 141137 states have internal predecessors, (181553), 0 states have call successors, (0), 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 17:27:41,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141138 states to 141138 states and 181553 transitions. [2021-11-07 17:27:41,238 INFO L78 Accepts]: Start accepts. Automaton has 141138 states and 181553 transitions. Word has length 75 [2021-11-07 17:27:41,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:27:41,239 INFO L470 AbstractCegarLoop]: Abstraction has 141138 states and 181553 transitions. [2021-11-07 17:27:41,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 17:27:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 141138 states and 181553 transitions. [2021-11-07 17:27:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 17:27:41,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:27:41,240 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] [2021-11-07 17:27:41,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 17:27:41,240 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-07 17:27:41,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:27:41,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1366046868, now seen corresponding path program 1 times [2021-11-07 17:27:41,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:27:41,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699007925] [2021-11-07 17:27:41,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:27:41,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:27:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:27:41,620 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 17:27:41,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:27:41,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699007925] [2021-11-07 17:27:41,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699007925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:27:41,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:27:41,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:27:41,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801534786] [2021-11-07 17:27:41,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:27:41,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:27:41,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:27:41,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:27:41,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:27:41,622 INFO L87 Difference]: Start difference. First operand 141138 states and 181553 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 17:27:43,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:27:43,848 INFO L93 Difference]: Finished difference Result 141138 states and 181553 transitions. [2021-11-07 17:27:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:27:43,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 77 [2021-11-07 17:27:43,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:27:44,102 INFO L225 Difference]: With dead ends: 141138 [2021-11-07 17:27:44,102 INFO L226 Difference]: Without dead ends: 141132 [2021-11-07 17:27:44,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.82ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:27:44,152 INFO L933 BasicCegarLoop]: 4404 mSDtfsCounter, 4345 mSDsluCounter, 4302 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4345 SdHoareTripleChecker+Valid, 8706 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.10ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.82ms IncrementalHoareTripleChecker+Time [2021-11-07 17:27:44,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4345 Valid, 8706 Invalid, 115 Unknown, 0 Unchecked, 12.10ms Time], IncrementalHoareTripleChecker [40 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 64.82ms Time] [2021-11-07 17:27:44,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141132 states. [2021-11-07 17:27:47,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141132 to 141132. [2021-11-07 17:27:47,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141132 states, 141077 states have (on average 1.2868646200301963) internal successors, (181547), 141131 states have internal predecessors, (181547), 0 states have call successors, (0), 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 17:27:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141132 states to 141132 states and 181547 transitions. [2021-11-07 17:27:47,554 INFO L78 Accepts]: Start accepts. Automaton has 141132 states and 181547 transitions. Word has length 77 [2021-11-07 17:27:47,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:27:47,554 INFO L470 AbstractCegarLoop]: Abstraction has 141132 states and 181547 transitions. [2021-11-07 17:27:47,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 17:27:47,554 INFO L276 IsEmpty]: Start isEmpty. Operand 141132 states and 181547 transitions. [2021-11-07 17:27:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 17:27:47,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:27:47,556 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:27:47,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 17:27:47,556 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-07 17:27:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:27:47,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1489100207, now seen corresponding path program 1 times [2021-11-07 17:27:47,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:27:47,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315498246] [2021-11-07 17:27:47,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:27:47,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:27:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:27:47,675 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 17:27:47,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:27:47,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315498246] [2021-11-07 17:27:47,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315498246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:27:47,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:27:47,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:27:47,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417423279] [2021-11-07 17:27:47,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:27:47,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:27:47,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:27:47,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:27:47,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:27:47,678 INFO L87 Difference]: Start difference. First operand 141132 states and 181547 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 17:27:50,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:27:50,176 INFO L93 Difference]: Finished difference Result 141132 states and 181547 transitions. [2021-11-07 17:27:50,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:27:50,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 79 [2021-11-07 17:27:50,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:27:50,447 INFO L225 Difference]: With dead ends: 141132 [2021-11-07 17:27:50,448 INFO L226 Difference]: Without dead ends: 141126 [2021-11-07 17:27:50,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:27:50,492 INFO L933 BasicCegarLoop]: 4398 mSDtfsCounter, 4337 mSDsluCounter, 4299 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4337 SdHoareTripleChecker+Valid, 8697 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.28ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.48ms IncrementalHoareTripleChecker+Time [2021-11-07 17:27:50,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4337 Valid, 8697 Invalid, 112 Unknown, 0 Unchecked, 8.28ms Time], IncrementalHoareTripleChecker [40 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 75.48ms Time] [2021-11-07 17:27:50,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141126 states.