./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7c9f1b92adb9acc769d32e01935187ba88bc4e22a7a5cb13176ef92b5b4818de --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-03 00:40:47,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 00:40:47,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 00:40:47,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 00:40:47,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 00:40:47,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 00:40:47,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 00:40:47,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 00:40:47,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 00:40:47,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 00:40:47,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 00:40:47,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 00:40:47,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 00:40:47,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 00:40:47,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 00:40:47,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 00:40:47,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 00:40:47,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 00:40:47,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 00:40:47,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 00:40:47,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 00:40:47,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 00:40:47,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 00:40:47,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 00:40:47,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 00:40:47,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 00:40:47,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 00:40:47,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 00:40:47,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 00:40:47,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 00:40:47,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 00:40:47,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 00:40:47,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 00:40:47,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 00:40:47,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 00:40:47,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 00:40:47,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 00:40:47,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 00:40:47,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 00:40:47,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 00:40:47,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 00:40:47,950 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 00:40:47,968 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 00:40:47,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 00:40:47,969 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 00:40:47,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 00:40:47,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 00:40:47,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 00:40:47,970 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 00:40:47,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 00:40:47,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 00:40:47,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 00:40:47,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 00:40:47,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 00:40:47,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 00:40:47,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 00:40:47,971 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 00:40:47,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 00:40:47,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 00:40:47,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 00:40:47,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 00:40:47,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 00:40:47,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 00:40:47,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 00:40:47,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 00:40:47,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 00:40:47,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 00:40:47,973 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 00:40:47,973 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 00:40:47,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 00:40:47,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 00:40:47,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c9f1b92adb9acc769d32e01935187ba88bc4e22a7a5cb13176ef92b5b4818de [2021-11-03 00:40:48,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 00:40:48,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 00:40:48,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 00:40:48,195 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 00:40:48,197 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 00:40:48,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-03 00:40:48,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4050712d3/1dfa3740d58745479a242f4a2dd77443/FLAGa466683a2 [2021-11-03 00:40:48,882 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 00:40:48,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-03 00:40:48,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4050712d3/1dfa3740d58745479a242f4a2dd77443/FLAGa466683a2 [2021-11-03 00:40:49,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4050712d3/1dfa3740d58745479a242f4a2dd77443 [2021-11-03 00:40:49,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 00:40:49,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 00:40:49,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 00:40:49,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 00:40:49,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 00:40:49,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:40:49" (1/1) ... [2021-11-03 00:40:49,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72945a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:49, skipping insertion in model container [2021-11-03 00:40:49,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:40:49" (1/1) ... [2021-11-03 00:40:49,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 00:40:49,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 00:40:50,978 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315136,315149] [2021-11-03 00:40:50,985 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315305,315318] [2021-11-03 00:40:50,986 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315472,315485] [2021-11-03 00:40:50,986 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i[315640,315653] [2021-11-03 00:40:51,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 00:40:51,060 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 00:40:51,266 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-icplus-ipg.cil.i[315136,315149] [2021-11-03 00:40:51,267 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-icplus-ipg.cil.i[315305,315318] [2021-11-03 00:40:51,267 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-icplus-ipg.cil.i[315472,315485] [2021-11-03 00:40:51,268 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-icplus-ipg.cil.i[315640,315653] [2021-11-03 00:40:51,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 00:40:51,395 INFO L208 MainTranslator]: Completed translation [2021-11-03 00:40:51,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:51 WrapperNode [2021-11-03 00:40:51,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 00:40:51,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 00:40:51,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 00:40:51,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 00:40:51,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:51" (1/1) ... [2021-11-03 00:40:51,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:51" (1/1) ... [2021-11-03 00:40:51,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 00:40:51,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 00:40:51,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 00:40:51,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 00:40:51,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:51" (1/1) ... [2021-11-03 00:40:51,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:51" (1/1) ... [2021-11-03 00:40:51,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:51" (1/1) ... [2021-11-03 00:40:51,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:51" (1/1) ... [2021-11-03 00:40:52,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:51" (1/1) ... [2021-11-03 00:40:52,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:51" (1/1) ... [2021-11-03 00:40:52,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:51" (1/1) ... [2021-11-03 00:40:52,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 00:40:52,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 00:40:52,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 00:40:52,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 00:40:52,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:51" (1/1) ... [2021-11-03 00:40:52,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 00:40:52,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 00:40:52,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 00:40:52,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 00:40:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 00:40:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-03 00:40:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-03 00:40:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 00:40:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 00:40:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 00:40:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 00:40:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 00:40:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 00:40:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 00:40:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 00:40:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 00:40:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 00:40:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 00:40:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-03 00:40:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 00:40:55,375 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-03 00:40:55,375 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-03 00:40:55,376 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-03 00:40:55,376 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-03 00:40:55,376 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-03 00:40:55,376 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-03 00:40:55,398 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 00:40:55,398 INFO L299 CfgBuilder]: Removed 5020 assume(true) statements. [2021-11-03 00:40:55,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:40:55 BoogieIcfgContainer [2021-11-03 00:40:55,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 00:40:55,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 00:40:55,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 00:40:55,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 00:40:55,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:40:49" (1/3) ... [2021-11-03 00:40:55,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53efac0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:40:55, skipping insertion in model container [2021-11-03 00:40:55,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:51" (2/3) ... [2021-11-03 00:40:55,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53efac0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:40:55, skipping insertion in model container [2021-11-03 00:40:55,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:40:55" (3/3) ... [2021-11-03 00:40:55,407 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-03 00:40:55,411 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 00:40:55,411 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2021-11-03 00:40:55,449 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 00:40:55,453 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 00:40:55,454 INFO L340 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2021-11-03 00:40:55,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 4190 states, 4146 states have (on average 1.307284129281235) internal successors, (5420), 4189 states have internal predecessors, (5420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:40:55,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 00:40:55,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:40:55,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:40:55,507 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:40:55,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:40:55,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1114883933, now seen corresponding path program 1 times [2021-11-03 00:40:55,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:40:55,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947601162] [2021-11-03 00:40:55,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:40:55,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:40:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:40:55,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:40:55,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:40:55,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947601162] [2021-11-03 00:40:55,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947601162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:40:55,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:40:55,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:40:55,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125189805] [2021-11-03 00:40:55,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:40:55,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:40:55,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:40:55,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:40:55,944 INFO L87 Difference]: Start difference. First operand has 4190 states, 4146 states have (on average 1.307284129281235) internal successors, (5420), 4189 states have internal predecessors, (5420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:41:08,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:41:11,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:41:11,401 INFO L93 Difference]: Finished difference Result 12072 states and 15622 transitions. [2021-11-03 00:41:11,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:41:11,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-03 00:41:11,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:41:11,455 INFO L225 Difference]: With dead ends: 12072 [2021-11-03 00:41:11,456 INFO L226 Difference]: Without dead ends: 7724 [2021-11-03 00:41:11,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:41:11,471 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 4901 mSDsluCounter, 5158 mSDsCounter, 0 mSdLazyCounter, 10122 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12982.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4901 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 10130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.16ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14974.77ms IncrementalHoareTripleChecker+Time [2021-11-03 00:41:11,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4901 Valid, 269 Invalid, 10130 Unknown, 0 Unchecked, 30.16ms Time], IncrementalHoareTripleChecker [7 Valid, 10122 Invalid, 1 Unknown, 0 Unchecked, 14974.77ms Time] [2021-11-03 00:41:11,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7724 states. [2021-11-03 00:41:11,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7724 to 7708. [2021-11-03 00:41:11,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7708 states, 7664 states have (on average 1.2519572025052192) internal successors, (9595), 7707 states have internal predecessors, (9595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:41:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7708 states to 7708 states and 9595 transitions. [2021-11-03 00:41:11,701 INFO L78 Accepts]: Start accepts. Automaton has 7708 states and 9595 transitions. Word has length 42 [2021-11-03 00:41:11,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:41:11,702 INFO L470 AbstractCegarLoop]: Abstraction has 7708 states and 9595 transitions. [2021-11-03 00:41:11,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:41:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand 7708 states and 9595 transitions. [2021-11-03 00:41:11,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 00:41:11,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:41:11,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:41:11,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 00:41:11,709 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:41:11,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:41:11,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1435015324, now seen corresponding path program 1 times [2021-11-03 00:41:11,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:41:11,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786411707] [2021-11-03 00:41:11,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:41:11,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:41:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:41:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:41:11,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:41:11,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786411707] [2021-11-03 00:41:11,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786411707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:41:11,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:41:11,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:41:11,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280507756] [2021-11-03 00:41:11,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:41:11,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:41:11,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:41:11,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:41:11,857 INFO L87 Difference]: Start difference. First operand 7708 states and 9595 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:41:24,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:41:27,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:41:27,477 INFO L93 Difference]: Finished difference Result 21388 states and 26599 transitions. [2021-11-03 00:41:27,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:41:27,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-03 00:41:27,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:41:27,521 INFO L225 Difference]: With dead ends: 21388 [2021-11-03 00:41:27,521 INFO L226 Difference]: Without dead ends: 13748 [2021-11-03 00:41:27,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:41:27,538 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3874 mSDsluCounter, 4845 mSDsCounter, 0 mSdLazyCounter, 9814 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13398.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3874 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.45ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 9814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15189.89ms IncrementalHoareTripleChecker+Time [2021-11-03 00:41:27,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3874 Valid, 0 Invalid, 9838 Unknown, 0 Unchecked, 20.45ms Time], IncrementalHoareTripleChecker [23 Valid, 9814 Invalid, 1 Unknown, 0 Unchecked, 15189.89ms Time] [2021-11-03 00:41:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13748 states. [2021-11-03 00:41:27,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13748 to 11656. [2021-11-03 00:41:27,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11656 states, 11612 states have (on average 1.2506889424733034) internal successors, (14523), 11655 states have internal predecessors, (14523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:41:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11656 states to 11656 states and 14523 transitions. [2021-11-03 00:41:27,912 INFO L78 Accepts]: Start accepts. Automaton has 11656 states and 14523 transitions. Word has length 42 [2021-11-03 00:41:27,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:41:27,917 INFO L470 AbstractCegarLoop]: Abstraction has 11656 states and 14523 transitions. [2021-11-03 00:41:27,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:41:27,917 INFO L276 IsEmpty]: Start isEmpty. Operand 11656 states and 14523 transitions. [2021-11-03 00:41:27,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 00:41:27,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:41:27,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:41:27,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 00:41:27,921 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:41:27,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:41:27,922 INFO L85 PathProgramCache]: Analyzing trace with hash -234934328, now seen corresponding path program 1 times [2021-11-03 00:41:27,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:41:27,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493756726] [2021-11-03 00:41:27,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:41:27,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:41:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:41:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:41:28,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:41:28,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493756726] [2021-11-03 00:41:28,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493756726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:41:28,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:41:28,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:41:28,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557529938] [2021-11-03 00:41:28,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:41:28,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:41:28,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:41:28,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:41:28,050 INFO L87 Difference]: Start difference. First operand 11656 states and 14523 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:41:40,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:41:42,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:41:42,560 INFO L93 Difference]: Finished difference Result 21927 states and 27451 transitions. [2021-11-03 00:41:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:41:42,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 00:41:42,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:41:42,589 INFO L225 Difference]: With dead ends: 21927 [2021-11-03 00:41:42,589 INFO L226 Difference]: Without dead ends: 10339 [2021-11-03 00:41:42,602 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 [2021-11-03 00:41:42,603 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2153 mSDsluCounter, 4783 mSDsCounter, 0 mSdLazyCounter, 10744 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12619.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2153 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.85ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 10744 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14202.30ms IncrementalHoareTripleChecker+Time [2021-11-03 00:41:42,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2153 Valid, 0 Invalid, 10766 Unknown, 0 Unchecked, 10.85ms Time], IncrementalHoareTripleChecker [21 Valid, 10744 Invalid, 1 Unknown, 0 Unchecked, 14202.30ms Time] [2021-11-03 00:41:42,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10339 states. [2021-11-03 00:41:42,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10339 to 10257. [2021-11-03 00:41:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10257 states, 10213 states have (on average 1.2596690492509546) internal successors, (12865), 10256 states have internal predecessors, (12865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:41:42,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10257 states to 10257 states and 12865 transitions. [2021-11-03 00:41:42,781 INFO L78 Accepts]: Start accepts. Automaton has 10257 states and 12865 transitions. Word has length 57 [2021-11-03 00:41:42,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:41:42,781 INFO L470 AbstractCegarLoop]: Abstraction has 10257 states and 12865 transitions. [2021-11-03 00:41:42,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:41:42,782 INFO L276 IsEmpty]: Start isEmpty. Operand 10257 states and 12865 transitions. [2021-11-03 00:41:42,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 00:41:42,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:41:42,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:41:42,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 00:41:42,783 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:41:42,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:41:42,784 INFO L85 PathProgramCache]: Analyzing trace with hash -465593213, now seen corresponding path program 1 times [2021-11-03 00:41:42,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:41:42,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615343513] [2021-11-03 00:41:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:41:42,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:41:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:41:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:41:42,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:41:42,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615343513] [2021-11-03 00:41:42,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615343513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:41:42,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:41:42,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:41:42,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720621940] [2021-11-03 00:41:42,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:41:42,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:41:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:41:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:41:42,912 INFO L87 Difference]: Start difference. First operand 10257 states and 12865 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:41:48,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:41:51,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:41:58,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:41:58,844 INFO L93 Difference]: Finished difference Result 24003 states and 30042 transitions. [2021-11-03 00:41:58,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:41:58,845 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 [2021-11-03 00:41:58,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:41:58,873 INFO L225 Difference]: With dead ends: 24003 [2021-11-03 00:41:58,874 INFO L226 Difference]: Without dead ends: 13814 [2021-11-03 00:41:58,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:41:58,888 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3925 mSDsluCounter, 4875 mSDsCounter, 0 mSdLazyCounter, 9863 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13853.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3925 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.45ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 9863 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15562.31ms IncrementalHoareTripleChecker+Time [2021-11-03 00:41:58,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3925 Valid, 0 Invalid, 9873 Unknown, 0 Unchecked, 11.45ms Time], IncrementalHoareTripleChecker [9 Valid, 9863 Invalid, 1 Unknown, 0 Unchecked, 15562.31ms Time] [2021-11-03 00:41:58,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13814 states. [2021-11-03 00:41:59,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13814 to 13369. [2021-11-03 00:41:59,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13369 states, 13325 states have (on average 1.255234521575985) internal successors, (16726), 13368 states have internal predecessors, (16726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:41:59,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13369 states to 13369 states and 16726 transitions. [2021-11-03 00:41:59,096 INFO L78 Accepts]: Start accepts. Automaton has 13369 states and 16726 transitions. Word has length 61 [2021-11-03 00:41:59,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:41:59,097 INFO L470 AbstractCegarLoop]: Abstraction has 13369 states and 16726 transitions. [2021-11-03 00:41:59,097 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) [2021-11-03 00:41:59,097 INFO L276 IsEmpty]: Start isEmpty. Operand 13369 states and 16726 transitions. [2021-11-03 00:41:59,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 00:41:59,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:41:59,099 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:41:59,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 00:41:59,099 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:41:59,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:41:59,100 INFO L85 PathProgramCache]: Analyzing trace with hash 451869666, now seen corresponding path program 1 times [2021-11-03 00:41:59,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:41:59,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126793913] [2021-11-03 00:41:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:41:59,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:41:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:41:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:41:59,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:41:59,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126793913] [2021-11-03 00:41:59,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126793913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:41:59,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:41:59,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:41:59,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750919701] [2021-11-03 00:41:59,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:41:59,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:41:59,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:41:59,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:41:59,197 INFO L87 Difference]: Start difference. First operand 13369 states and 16726 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:42:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:42:13,604 INFO L93 Difference]: Finished difference Result 39403 states and 49397 transitions. [2021-11-03 00:42:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:42:13,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 00:42:13,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:42:13,651 INFO L225 Difference]: With dead ends: 39403 [2021-11-03 00:42:13,651 INFO L226 Difference]: Without dead ends: 26165 [2021-11-03 00:42:13,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:42:13,679 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4661 mSDsluCounter, 4914 mSDsCounter, 0 mSdLazyCounter, 9946 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12143.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4661 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.95ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13821.07ms IncrementalHoareTripleChecker+Time [2021-11-03 00:42:13,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4661 Valid, 0 Invalid, 9951 Unknown, 0 Unchecked, 11.95ms Time], IncrementalHoareTripleChecker [5 Valid, 9946 Invalid, 0 Unknown, 0 Unchecked, 13821.07ms Time] [2021-11-03 00:42:13,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26165 states. [2021-11-03 00:42:14,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26165 to 26149. [2021-11-03 00:42:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26149 states, 26105 states have (on average 1.255468301091745) internal successors, (32774), 26148 states have internal predecessors, (32774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:42:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26149 states to 26149 states and 32774 transitions. [2021-11-03 00:42:14,099 INFO L78 Accepts]: Start accepts. Automaton has 26149 states and 32774 transitions. Word has length 71 [2021-11-03 00:42:14,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:42:14,102 INFO L470 AbstractCegarLoop]: Abstraction has 26149 states and 32774 transitions. [2021-11-03 00:42:14,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:42:14,103 INFO L276 IsEmpty]: Start isEmpty. Operand 26149 states and 32774 transitions. [2021-11-03 00:42:14,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 00:42:14,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:42:14,104 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:42:14,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 00:42:14,104 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:42:14,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:42:14,105 INFO L85 PathProgramCache]: Analyzing trace with hash -827994012, now seen corresponding path program 1 times [2021-11-03 00:42:14,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:42:14,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421261452] [2021-11-03 00:42:14,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:42:14,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:42:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:42:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:42:14,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:42:14,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421261452] [2021-11-03 00:42:14,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421261452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:42:14,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:42:14,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:42:14,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004060577] [2021-11-03 00:42:14,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:42:14,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:42:14,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:42:14,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:42:14,192 INFO L87 Difference]: Start difference. First operand 26149 states and 32774 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:42:29,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:42:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:42:33,729 INFO L93 Difference]: Finished difference Result 64971 states and 81509 transitions. [2021-11-03 00:42:33,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:42:33,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 00:42:33,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:42:33,904 INFO L225 Difference]: With dead ends: 64971 [2021-11-03 00:42:33,904 INFO L226 Difference]: Without dead ends: 38953 [2021-11-03 00:42:33,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:42:33,934 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4706 mSDsluCounter, 4868 mSDsCounter, 0 mSdLazyCounter, 14487 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16593.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4706 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.01ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14487 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18711.42ms IncrementalHoareTripleChecker+Time [2021-11-03 00:42:33,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4706 Valid, 0 Invalid, 14494 Unknown, 0 Unchecked, 14.01ms Time], IncrementalHoareTripleChecker [6 Valid, 14487 Invalid, 1 Unknown, 0 Unchecked, 18711.42ms Time] [2021-11-03 00:42:33,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38953 states. [2021-11-03 00:42:34,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38953 to 38888. [2021-11-03 00:42:34,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38888 states, 38844 states have (on average 1.2558181443723613) internal successors, (48781), 38887 states have internal predecessors, (48781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:42:34,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38888 states to 38888 states and 48781 transitions. [2021-11-03 00:42:34,511 INFO L78 Accepts]: Start accepts. Automaton has 38888 states and 48781 transitions. Word has length 71 [2021-11-03 00:42:34,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:42:34,511 INFO L470 AbstractCegarLoop]: Abstraction has 38888 states and 48781 transitions. [2021-11-03 00:42:34,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:42:34,512 INFO L276 IsEmpty]: Start isEmpty. Operand 38888 states and 48781 transitions. [2021-11-03 00:42:34,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 00:42:34,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:42:34,513 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:42:34,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 00:42:34,513 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:42:34,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:42:34,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1803764864, now seen corresponding path program 1 times [2021-11-03 00:42:34,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:42:34,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471020002] [2021-11-03 00:42:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:42:34,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:42:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:42:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:42:34,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:42:34,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471020002] [2021-11-03 00:42:34,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471020002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:42:34,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:42:34,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:42:34,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775669494] [2021-11-03 00:42:34,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:42:34,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:42:34,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:42:34,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:42:34,637 INFO L87 Difference]: Start difference. First operand 38888 states and 48781 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:42:47,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:42:47,076 INFO L93 Difference]: Finished difference Result 38888 states and 48781 transitions. [2021-11-03 00:42:47,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 00:42:47,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-03 00:42:47,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:42:47,137 INFO L225 Difference]: With dead ends: 38888 [2021-11-03 00:42:47,138 INFO L226 Difference]: Without dead ends: 38882 [2021-11-03 00:42:47,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.55ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:42:47,155 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4877 mSDsluCounter, 4832 mSDsCounter, 0 mSdLazyCounter, 9832 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10534.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4877 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.73ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 9832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11865.31ms IncrementalHoareTripleChecker+Time [2021-11-03 00:42:47,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4877 Valid, 0 Invalid, 9866 Unknown, 0 Unchecked, 19.73ms Time], IncrementalHoareTripleChecker [34 Valid, 9832 Invalid, 0 Unknown, 0 Unchecked, 11865.31ms Time] [2021-11-03 00:42:47,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38882 states. [2021-11-03 00:42:47,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38882 to 38882. [2021-11-03 00:42:47,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38882 states, 38841 states have (on average 1.2557606652763833) internal successors, (48775), 38881 states have internal predecessors, (48775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:42:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38882 states to 38882 states and 48775 transitions. [2021-11-03 00:42:47,923 INFO L78 Accepts]: Start accepts. Automaton has 38882 states and 48775 transitions. Word has length 72 [2021-11-03 00:42:47,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:42:47,923 INFO L470 AbstractCegarLoop]: Abstraction has 38882 states and 48775 transitions. [2021-11-03 00:42:47,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:42:47,923 INFO L276 IsEmpty]: Start isEmpty. Operand 38882 states and 48775 transitions. [2021-11-03 00:42:47,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 00:42:47,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:42:47,924 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:42:47,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 00:42:47,925 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:42:47,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:42:47,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1748607325, now seen corresponding path program 1 times [2021-11-03 00:42:47,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:42:47,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248724939] [2021-11-03 00:42:47,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:42:47,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:42:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:42:48,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:42:48,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:42:48,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248724939] [2021-11-03 00:42:48,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248724939] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:42:48,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:42:48,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:42:48,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418015645] [2021-11-03 00:42:48,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:42:48,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:42:48,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:42:48,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:42:48,025 INFO L87 Difference]: Start difference. First operand 38882 states and 48775 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:42:55,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:43:00,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:43:00,493 INFO L93 Difference]: Finished difference Result 38882 states and 48775 transitions. [2021-11-03 00:43:00,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 00:43:00,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-03 00:43:00,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:43:00,556 INFO L225 Difference]: With dead ends: 38882 [2021-11-03 00:43:00,556 INFO L226 Difference]: Without dead ends: 38876 [2021-11-03 00:43:00,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.11ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:43:00,573 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4866 mSDsluCounter, 4829 mSDsCounter, 0 mSdLazyCounter, 9820 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10504.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4866 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.49ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 9820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11771.86ms IncrementalHoareTripleChecker+Time [2021-11-03 00:43:00,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4866 Valid, 0 Invalid, 9857 Unknown, 0 Unchecked, 19.49ms Time], IncrementalHoareTripleChecker [37 Valid, 9820 Invalid, 0 Unknown, 0 Unchecked, 11771.86ms Time] [2021-11-03 00:43:00,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38876 states. [2021-11-03 00:43:01,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38876 to 38876. [2021-11-03 00:43:01,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38876 states, 38838 states have (on average 1.255703177300582) internal successors, (48769), 38875 states have internal predecessors, (48769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:43:01,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38876 states to 38876 states and 48769 transitions. [2021-11-03 00:43:01,379 INFO L78 Accepts]: Start accepts. Automaton has 38876 states and 48769 transitions. Word has length 74 [2021-11-03 00:43:01,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:43:01,380 INFO L470 AbstractCegarLoop]: Abstraction has 38876 states and 48769 transitions. [2021-11-03 00:43:01,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:43:01,380 INFO L276 IsEmpty]: Start isEmpty. Operand 38876 states and 48769 transitions. [2021-11-03 00:43:01,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 00:43:01,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:43:01,381 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:43:01,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 00:43:01,381 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:43:01,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:43:01,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1079280314, now seen corresponding path program 1 times [2021-11-03 00:43:01,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:43:01,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308509129] [2021-11-03 00:43:01,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:43:01,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:43:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:43:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:43:01,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:43:01,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308509129] [2021-11-03 00:43:01,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308509129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:43:01,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:43:01,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:43:01,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846113564] [2021-11-03 00:43:01,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:43:01,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:43:01,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:43:01,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:43:01,528 INFO L87 Difference]: Start difference. First operand 38876 states and 48769 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:43:12,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:43:21,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:43:21,982 INFO L93 Difference]: Finished difference Result 77621 states and 97387 transitions. [2021-11-03 00:43:21,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:43:21,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-03 00:43:21,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:43:22,106 INFO L225 Difference]: With dead ends: 77621 [2021-11-03 00:43:22,107 INFO L226 Difference]: Without dead ends: 77615 [2021-11-03 00:43:22,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.12ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:43:22,130 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4857 mSDsluCounter, 9676 mSDsCounter, 0 mSdLazyCounter, 14672 mSolverCounterSat, 70 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17037.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4857 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.06ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 14672 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19214.60ms IncrementalHoareTripleChecker+Time [2021-11-03 00:43:22,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4857 Valid, 0 Invalid, 14743 Unknown, 0 Unchecked, 25.06ms Time], IncrementalHoareTripleChecker [70 Valid, 14672 Invalid, 1 Unknown, 0 Unchecked, 19214.60ms Time] [2021-11-03 00:43:22,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77615 states. [2021-11-03 00:43:23,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77615 to 77491. [2021-11-03 00:43:23,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77491 states, 77453 states have (on average 1.2558325694292023) internal successors, (97268), 77490 states have internal predecessors, (97268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:43:23,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77491 states to 77491 states and 97268 transitions. [2021-11-03 00:43:23,815 INFO L78 Accepts]: Start accepts. Automaton has 77491 states and 97268 transitions. Word has length 76 [2021-11-03 00:43:23,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:43:23,815 INFO L470 AbstractCegarLoop]: Abstraction has 77491 states and 97268 transitions. [2021-11-03 00:43:23,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:43:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 77491 states and 97268 transitions. [2021-11-03 00:43:23,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 00:43:23,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:43:23,817 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:43:23,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 00:43:23,818 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:43:23,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:43:23,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2101116823, now seen corresponding path program 1 times [2021-11-03 00:43:23,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:43:23,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435766001] [2021-11-03 00:43:23,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:43:23,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:43:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:43:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:43:23,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:43:23,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435766001] [2021-11-03 00:43:23,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435766001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:43:23,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:43:23,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:43:23,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590547491] [2021-11-03 00:43:23,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:43:23,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:43:23,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:43:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:43:23,927 INFO L87 Difference]: Start difference. First operand 77491 states and 97268 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:43:35,152 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:43:37,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:43:40,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:43:40,409 INFO L93 Difference]: Finished difference Result 77491 states and 97268 transitions. [2021-11-03 00:43:40,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 00:43:40,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-03 00:43:40,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:43:40,532 INFO L225 Difference]: With dead ends: 77491 [2021-11-03 00:43:40,532 INFO L226 Difference]: Without dead ends: 77485 [2021-11-03 00:43:40,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.00ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:43:40,558 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4856 mSDsluCounter, 4826 mSDsCounter, 0 mSdLazyCounter, 9807 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13739.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4856 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.35ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 9807 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15153.14ms IncrementalHoareTripleChecker+Time [2021-11-03 00:43:40,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4856 Valid, 0 Invalid, 9845 Unknown, 0 Unchecked, 16.35ms Time], IncrementalHoareTripleChecker [37 Valid, 9807 Invalid, 1 Unknown, 0 Unchecked, 15153.14ms Time] [2021-11-03 00:43:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77485 states. [2021-11-03 00:43:42,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77485 to 77485. [2021-11-03 00:43:42,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77485 states, 77450 states have (on average 1.2558037443511942) internal successors, (97262), 77484 states have internal predecessors, (97262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:43:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77485 states to 77485 states and 97262 transitions. [2021-11-03 00:43:42,290 INFO L78 Accepts]: Start accepts. Automaton has 77485 states and 97262 transitions. Word has length 78 [2021-11-03 00:43:42,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:43:42,291 INFO L470 AbstractCegarLoop]: Abstraction has 77485 states and 97262 transitions. [2021-11-03 00:43:42,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:43:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 77485 states and 97262 transitions. [2021-11-03 00:43:42,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 00:43:42,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:43:42,293 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:43:42,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 00:43:42,293 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:43:42,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:43:42,294 INFO L85 PathProgramCache]: Analyzing trace with hash -538490868, now seen corresponding path program 1 times [2021-11-03 00:43:42,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:43:42,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374760868] [2021-11-03 00:43:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:43:42,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:43:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:43:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:43:42,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:43:42,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374760868] [2021-11-03 00:43:42,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374760868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:43:42,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:43:42,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:43:42,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383186253] [2021-11-03 00:43:42,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:43:42,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:43:42,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:43:42,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:43:42,391 INFO L87 Difference]: Start difference. First operand 77485 states and 97262 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:43:50,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:43:55,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:43:55,530 INFO L93 Difference]: Finished difference Result 77485 states and 97262 transitions. [2021-11-03 00:43:55,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 00:43:55,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-03 00:43:55,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:43:55,668 INFO L225 Difference]: With dead ends: 77485 [2021-11-03 00:43:55,668 INFO L226 Difference]: Without dead ends: 77479 [2021-11-03 00:43:55,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:43:55,696 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4848 mSDsluCounter, 4823 mSDsCounter, 0 mSdLazyCounter, 9796 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10285.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4848 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.60ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 9796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11528.00ms IncrementalHoareTripleChecker+Time [2021-11-03 00:43:55,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4848 Valid, 0 Invalid, 9833 Unknown, 0 Unchecked, 16.60ms Time], IncrementalHoareTripleChecker [37 Valid, 9796 Invalid, 0 Unknown, 0 Unchecked, 11528.00ms Time] [2021-11-03 00:43:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77479 states. [2021-11-03 00:43:57,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77479 to 77479. [2021-11-03 00:43:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77479 states, 77447 states have (on average 1.2557749170400403) internal successors, (97256), 77478 states have internal predecessors, (97256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:43:57,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77479 states to 77479 states and 97256 transitions. [2021-11-03 00:43:57,611 INFO L78 Accepts]: Start accepts. Automaton has 77479 states and 97256 transitions. Word has length 80 [2021-11-03 00:43:57,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:43:57,611 INFO L470 AbstractCegarLoop]: Abstraction has 77479 states and 97256 transitions. [2021-11-03 00:43:57,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:43:57,611 INFO L276 IsEmpty]: Start isEmpty. Operand 77479 states and 97256 transitions. [2021-11-03 00:43:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 00:43:57,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:43:57,613 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:43:57,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 00:43:57,613 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:43:57,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:43:57,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2093501393, now seen corresponding path program 1 times [2021-11-03 00:43:57,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:43:57,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381811804] [2021-11-03 00:43:57,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:43:57,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:43:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:43:57,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:43:57,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:43:57,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381811804] [2021-11-03 00:43:57,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381811804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:43:57,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:43:57,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:43:57,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435614138] [2021-11-03 00:43:57,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:43:57,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:43:57,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:43:57,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:43:57,716 INFO L87 Difference]: Start difference. First operand 77479 states and 97256 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:44:08,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:44:12,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:44:12,427 INFO L93 Difference]: Finished difference Result 77479 states and 97256 transitions. [2021-11-03 00:44:12,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 00:44:12,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 00:44:12,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:44:12,550 INFO L225 Difference]: With dead ends: 77479 [2021-11-03 00:44:12,551 INFO L226 Difference]: Without dead ends: 77473 [2021-11-03 00:44:12,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:44:12,578 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4840 mSDsluCounter, 4820 mSDsCounter, 0 mSdLazyCounter, 9783 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11529.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4840 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.64ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 9783 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12920.16ms IncrementalHoareTripleChecker+Time [2021-11-03 00:44:12,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4840 Valid, 0 Invalid, 9821 Unknown, 0 Unchecked, 16.64ms Time], IncrementalHoareTripleChecker [37 Valid, 9783 Invalid, 1 Unknown, 0 Unchecked, 12920.16ms Time] [2021-11-03 00:44:12,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77473 states. [2021-11-03 00:44:14,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77473 to 77473. [2021-11-03 00:44:14,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77473 states, 77444 states have (on average 1.2557460874954807) internal successors, (97250), 77472 states have internal predecessors, (97250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:44:14,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77473 states to 77473 states and 97250 transitions. [2021-11-03 00:44:14,464 INFO L78 Accepts]: Start accepts. Automaton has 77473 states and 97250 transitions. Word has length 82 [2021-11-03 00:44:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:44:14,464 INFO L470 AbstractCegarLoop]: Abstraction has 77473 states and 97250 transitions. [2021-11-03 00:44:14,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:44:14,464 INFO L276 IsEmpty]: Start isEmpty. Operand 77473 states and 97250 transitions. [2021-11-03 00:44:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 00:44:14,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:44:14,466 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:44:14,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 00:44:14,466 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:44:14,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:44:14,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1809996590, now seen corresponding path program 1 times [2021-11-03 00:44:14,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:44:14,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696250480] [2021-11-03 00:44:14,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:44:14,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:44:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:44:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:44:14,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:44:14,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696250480] [2021-11-03 00:44:14,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696250480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:44:14,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:44:14,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:44:14,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954499143] [2021-11-03 00:44:14,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:44:14,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:44:14,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:44:14,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:44:14,567 INFO L87 Difference]: Start difference. First operand 77473 states and 97250 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:44:26,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:44:35,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:44:35,554 INFO L93 Difference]: Finished difference Result 106172 states and 133054 transitions. [2021-11-03 00:44:35,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 00:44:35,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-03 00:44:35,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:44:35,754 INFO L225 Difference]: With dead ends: 106172 [2021-11-03 00:44:35,754 INFO L226 Difference]: Without dead ends: 106166 [2021-11-03 00:44:35,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:44:35,792 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3776 mSDsluCounter, 9601 mSDsCounter, 0 mSdLazyCounter, 14607 mSolverCounterSat, 74 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16438.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3776 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.33ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 14607 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18503.04ms IncrementalHoareTripleChecker+Time [2021-11-03 00:44:35,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3776 Valid, 0 Invalid, 14682 Unknown, 0 Unchecked, 24.33ms Time], IncrementalHoareTripleChecker [74 Valid, 14607 Invalid, 1 Unknown, 0 Unchecked, 18503.04ms Time] [2021-11-03 00:44:35,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106166 states. [2021-11-03 00:44:38,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106166 to 104304. [2021-11-03 00:44:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104304 states, 104275 states have (on average 1.2543754495324861) internal successors, (130800), 104303 states have internal predecessors, (130800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:44:38,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104304 states to 104304 states and 130800 transitions. [2021-11-03 00:44:38,593 INFO L78 Accepts]: Start accepts. Automaton has 104304 states and 130800 transitions. Word has length 84 [2021-11-03 00:44:38,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:44:38,593 INFO L470 AbstractCegarLoop]: Abstraction has 104304 states and 130800 transitions. [2021-11-03 00:44:38,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:44:38,593 INFO L276 IsEmpty]: Start isEmpty. Operand 104304 states and 130800 transitions. [2021-11-03 00:44:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 00:44:38,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:44:38,596 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:44:38,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 00:44:38,596 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:44:38,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:44:38,597 INFO L85 PathProgramCache]: Analyzing trace with hash 55179765, now seen corresponding path program 1 times [2021-11-03 00:44:38,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:44:38,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650498246] [2021-11-03 00:44:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:44:38,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:44:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:44:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:44:38,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:44:38,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650498246] [2021-11-03 00:44:38,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650498246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:44:38,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:44:38,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:44:38,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884881219] [2021-11-03 00:44:38,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:44:38,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:44:38,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:44:38,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:44:38,696 INFO L87 Difference]: Start difference. First operand 104304 states and 130800 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:44:46,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:44:53,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:44:53,693 INFO L93 Difference]: Finished difference Result 104304 states and 130800 transitions. [2021-11-03 00:44:53,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 00:44:53,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-03 00:44:53,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:44:54,018 INFO L225 Difference]: With dead ends: 104304 [2021-11-03 00:44:54,018 INFO L226 Difference]: Without dead ends: 104298 [2021-11-03 00:44:54,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.69ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:44:54,045 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4830 mSDsluCounter, 4817 mSDsCounter, 0 mSdLazyCounter, 9772 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11449.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4830 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.93ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 9772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12724.25ms IncrementalHoareTripleChecker+Time [2021-11-03 00:44:54,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4830 Valid, 0 Invalid, 9809 Unknown, 0 Unchecked, 16.93ms Time], IncrementalHoareTripleChecker [37 Valid, 9772 Invalid, 0 Unknown, 0 Unchecked, 12724.25ms Time] [2021-11-03 00:44:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104298 states. [2021-11-03 00:44:56,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104298 to 104298. [2021-11-03 00:44:56,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104298 states, 104272 states have (on average 1.254353997237993) internal successors, (130794), 104297 states have internal predecessors, (130794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:44:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104298 states to 104298 states and 130794 transitions. [2021-11-03 00:44:57,220 INFO L78 Accepts]: Start accepts. Automaton has 104298 states and 130794 transitions. Word has length 86 [2021-11-03 00:44:57,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:44:57,220 INFO L470 AbstractCegarLoop]: Abstraction has 104298 states and 130794 transitions. [2021-11-03 00:44:57,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:44:57,220 INFO L276 IsEmpty]: Start isEmpty. Operand 104298 states and 130794 transitions. [2021-11-03 00:44:57,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 00:44:57,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:44:57,223 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:44:57,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 00:44:57,224 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:44:57,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:44:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1488294808, now seen corresponding path program 1 times [2021-11-03 00:44:57,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:44:57,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807608138] [2021-11-03 00:44:57,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:44:57,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:44:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:44:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:44:57,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:44:57,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807608138] [2021-11-03 00:44:57,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807608138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:44:57,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:44:57,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:44:57,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656725748] [2021-11-03 00:44:57,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:44:57,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:44:57,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:44:57,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:44:57,328 INFO L87 Difference]: Start difference. First operand 104298 states and 130794 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:45:11,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:45:11,488 INFO L93 Difference]: Finished difference Result 104298 states and 130794 transitions. [2021-11-03 00:45:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 00:45:11,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-03 00:45:11,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:45:11,675 INFO L225 Difference]: With dead ends: 104298 [2021-11-03 00:45:11,675 INFO L226 Difference]: Without dead ends: 104292 [2021-11-03 00:45:11,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:45:11,711 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4822 mSDsluCounter, 4814 mSDsCounter, 0 mSdLazyCounter, 9760 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10608.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4822 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.46ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 9760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11981.26ms IncrementalHoareTripleChecker+Time [2021-11-03 00:45:11,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4822 Valid, 0 Invalid, 9797 Unknown, 0 Unchecked, 15.46ms Time], IncrementalHoareTripleChecker [37 Valid, 9760 Invalid, 0 Unknown, 0 Unchecked, 11981.26ms Time] [2021-11-03 00:45:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104292 states. [2021-11-03 00:45:14,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104292 to 104292. [2021-11-03 00:45:14,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104292 states, 104269 states have (on average 1.2543325437090602) internal successors, (130788), 104291 states have internal predecessors, (130788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:45:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104292 states to 104292 states and 130788 transitions. [2021-11-03 00:45:15,028 INFO L78 Accepts]: Start accepts. Automaton has 104292 states and 130788 transitions. Word has length 88 [2021-11-03 00:45:15,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:45:15,028 INFO L470 AbstractCegarLoop]: Abstraction has 104292 states and 130788 transitions. [2021-11-03 00:45:15,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:45:15,028 INFO L276 IsEmpty]: Start isEmpty. Operand 104292 states and 130788 transitions. [2021-11-03 00:45:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 00:45:15,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:45:15,031 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:45:15,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 00:45:15,031 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:45:15,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:45:15,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2057427073, now seen corresponding path program 1 times [2021-11-03 00:45:15,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:45:15,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204038640] [2021-11-03 00:45:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:45:15,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:45:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:45:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 00:45:15,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:45:15,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204038640] [2021-11-03 00:45:15,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204038640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:45:15,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:45:15,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:45:15,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834333313] [2021-11-03 00:45:15,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 00:45:15,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:45:15,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 00:45:15,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:45:15,302 INFO L87 Difference]: Start difference. First operand 104292 states and 130788 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:45:24,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 00:45:32,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:45:32,092 INFO L93 Difference]: Finished difference Result 230305 states and 289787 transitions. [2021-11-03 00:45:32,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 00:45:32,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-03 00:45:32,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:45:32,442 INFO L225 Difference]: With dead ends: 230305 [2021-11-03 00:45:32,442 INFO L226 Difference]: Without dead ends: 126144 [2021-11-03 00:45:32,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 00:45:32,554 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2048 mSDsluCounter, 4821 mSDsCounter, 0 mSdLazyCounter, 11836 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11525.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.16ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13133.65ms IncrementalHoareTripleChecker+Time [2021-11-03 00:45:32,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2048 Valid, 0 Invalid, 11851 Unknown, 0 Unchecked, 15.16ms Time], IncrementalHoareTripleChecker [15 Valid, 11836 Invalid, 0 Unknown, 0 Unchecked, 13133.65ms Time] [2021-11-03 00:45:32,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126144 states. [2021-11-03 00:45:36,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126144 to 125967. [2021-11-03 00:45:36,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125967 states, 125944 states have (on average 1.258011497173347) internal successors, (158439), 125966 states have internal predecessors, (158439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:45:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125967 states to 125967 states and 158439 transitions. [2021-11-03 00:45:36,653 INFO L78 Accepts]: Start accepts. Automaton has 125967 states and 158439 transitions. Word has length 89 [2021-11-03 00:45:36,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 00:45:36,653 INFO L470 AbstractCegarLoop]: Abstraction has 125967 states and 158439 transitions. [2021-11-03 00:45:36,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:45:36,653 INFO L276 IsEmpty]: Start isEmpty. Operand 125967 states and 158439 transitions. [2021-11-03 00:45:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 00:45:36,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 00:45:36,655 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 00:45:36,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 00:45:36,655 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 41 more)] === [2021-11-03 00:45:36,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 00:45:36,655 INFO L85 PathProgramCache]: Analyzing trace with hash 27349435, now seen corresponding path program 1 times [2021-11-03 00:45:36,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 00:45:36,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425224300] [2021-11-03 00:45:36,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 00:45:36,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 00:45:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 00:45:36,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 00:45:36,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 00:45:36,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425224300] [2021-11-03 00:45:36,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425224300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 00:45:36,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 00:45:36,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 00:45:36,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161796809] [2021-11-03 00:45:36,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 00:45:36,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 00:45:36,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 00:45:36,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 00:45:36,747 INFO L87 Difference]: Start difference. First operand 125967 states and 158439 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 00:45:51,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 00:45:51,224 INFO L93 Difference]: Finished difference Result 125967 states and 158439 transitions. [2021-11-03 00:45:51,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 00:45:51,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-03 00:45:51,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 00:45:51,461 INFO L225 Difference]: With dead ends: 125967 [2021-11-03 00:45:51,462 INFO L226 Difference]: Without dead ends: 125961 [2021-11-03 00:45:51,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.60ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 00:45:51,498 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4814 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 9748 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10172.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4814 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.14ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 9748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11425.22ms IncrementalHoareTripleChecker+Time [2021-11-03 00:45:51,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4814 Valid, 0 Invalid, 9785 Unknown, 0 Unchecked, 16.14ms Time], IncrementalHoareTripleChecker [37 Valid, 9748 Invalid, 0 Unknown, 0 Unchecked, 11425.22ms Time] [2021-11-03 00:45:51,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125961 states.