./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-media-rc-nuvoton-cir.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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-media-rc-nuvoton-cir.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 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 10:07:48,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 10:07:48,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 10:07:48,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 10:07:48,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 10:07:48,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 10:07:48,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 10:07:48,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 10:07:48,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 10:07:48,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 10:07:48,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 10:07:48,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 10:07:48,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 10:07:48,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 10:07:48,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 10:07:48,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 10:07:48,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 10:07:48,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 10:07:48,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 10:07:48,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 10:07:48,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 10:07:48,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 10:07:48,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 10:07:48,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 10:07:48,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 10:07:48,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 10:07:48,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 10:07:48,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 10:07:48,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 10:07:48,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 10:07:48,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 10:07:48,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 10:07:48,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 10:07:48,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 10:07:48,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 10:07:48,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 10:07:48,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 10:07:48,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 10:07:48,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 10:07:48,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 10:07:48,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 10:07:48,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 10:07:49,001 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 10:07:49,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 10:07:49,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 10:07:49,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 10:07:49,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 10:07:49,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 10:07:49,004 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 10:07:49,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 10:07:49,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 10:07:49,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 10:07:49,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 10:07:49,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 10:07:49,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 10:07:49,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 10:07:49,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 10:07:49,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 10:07:49,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 10:07:49,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 10:07:49,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 10:07:49,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 10:07:49,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 10:07:49,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 10:07:49,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 10:07:49,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 10:07:49,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 10:07:49,008 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 10:07:49,009 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 10:07:49,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 10:07:49,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 10:07:49,009 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4bd03bf538c8a1f05055d45724b67645b210b4f99e6ffddc4b441645e05ec36a [2021-11-04 10:07:49,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 10:07:49,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 10:07:49,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 10:07:49,253 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 10:07:49,254 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 10:07:49,255 INFO L432 ainManager$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-media-rc-nuvoton-cir.cil.i [2021-11-04 10:07:49,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24b0b91cb/b9153a6ff8fa46d9b5b05a431e5cd820/FLAG19c358a14 [2021-11-04 10:07:49,790 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 10:07:49,791 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-media-rc-nuvoton-cir.cil.i [2021-11-04 10:07:49,819 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24b0b91cb/b9153a6ff8fa46d9b5b05a431e5cd820/FLAG19c358a14 [2021-11-04 10:07:50,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24b0b91cb/b9153a6ff8fa46d9b5b05a431e5cd820 [2021-11-04 10:07:50,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 10:07:50,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 10:07:50,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 10:07:50,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 10:07:50,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 10:07:50,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:07:50" (1/1) ... [2021-11-04 10:07:50,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a28bbc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:07:50, skipping insertion in model container [2021-11-04 10:07:50,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:07:50" (1/1) ... [2021-11-04 10:07:50,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 10:07:50,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 10:07:51,283 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-media-rc-nuvoton-cir.cil.i[196376,196389] [2021-11-04 10:07:51,294 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-media-rc-nuvoton-cir.cil.i[196545,196558] [2021-11-04 10:07:51,295 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-media-rc-nuvoton-cir.cil.i[196712,196725] [2021-11-04 10:07:51,295 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-media-rc-nuvoton-cir.cil.i[196880,196893] [2021-11-04 10:07:51,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 10:07:51,317 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 10:07:51,476 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-media-rc-nuvoton-cir.cil.i[196376,196389] [2021-11-04 10:07:51,478 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-media-rc-nuvoton-cir.cil.i[196545,196558] [2021-11-04 10:07:51,478 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-media-rc-nuvoton-cir.cil.i[196712,196725] [2021-11-04 10:07:51,478 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-media-rc-nuvoton-cir.cil.i[196880,196893] [2021-11-04 10:07:51,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 10:07:51,545 INFO L208 MainTranslator]: Completed translation [2021-11-04 10:07:51,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:07:51 WrapperNode [2021-11-04 10:07:51,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 10:07:51,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 10:07:51,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 10:07:51,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 10:07:51,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:07:51" (1/1) ... [2021-11-04 10:07:51,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:07:51" (1/1) ... [2021-11-04 10:07:51,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 10:07:51,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 10:07:51,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 10:07:51,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 10:07:51,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:07:51" (1/1) ... [2021-11-04 10:07:51,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:07:51" (1/1) ... [2021-11-04 10:07:51,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:07:51" (1/1) ... [2021-11-04 10:07:51,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:07:51" (1/1) ... [2021-11-04 10:07:52,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:07:51" (1/1) ... [2021-11-04 10:07:52,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:07:51" (1/1) ... [2021-11-04 10:07:52,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:07:51" (1/1) ... [2021-11-04 10:07:52,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 10:07:52,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 10:07:52,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 10:07:52,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 10:07:52,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:07:51" (1/1) ... [2021-11-04 10:07:52,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 10:07:52,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 10:07:52,125 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) [2021-11-04 10:07:52,151 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 [2021-11-04 10:07:52,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 10:07:52,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 10:07:52,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 10:07:52,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 10:07:52,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 10:07:52,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 10:07:52,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 10:07:52,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 10:07:52,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 10:07:52,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 10:07:52,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 10:07:52,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 10:07:54,829 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-04 10:07:54,830 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-04 10:07:54,830 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-04 10:07:54,830 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-04 10:07:54,830 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-04 10:07:54,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 10:07:54,848 INFO L299 CfgBuilder]: Removed 2074 assume(true) statements. [2021-11-04 10:07:54,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:07:54 BoogieIcfgContainer [2021-11-04 10:07:54,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 10:07:54,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 10:07:54,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 10:07:54,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 10:07:54,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 10:07:50" (1/3) ... [2021-11-04 10:07:54,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237b58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:07:54, skipping insertion in model container [2021-11-04 10:07:54,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:07:51" (2/3) ... [2021-11-04 10:07:54,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@237b58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:07:54, skipping insertion in model container [2021-11-04 10:07:54,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:07:54" (3/3) ... [2021-11-04 10:07:54,858 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-rc-nuvoton-cir.cil.i [2021-11-04 10:07:54,861 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 10:07:54,861 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2021-11-04 10:07:54,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 10:07:54,909 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 [2021-11-04 10:07:54,910 INFO L340 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2021-11-04 10:07:54,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 1566 states, 1526 states have (on average 1.2673656618610747) internal successors, (1934), 1565 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:07:54,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-04 10:07:54,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:07:54,947 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] [2021-11-04 10:07:54,947 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:07:54,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:07:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1159951444, now seen corresponding path program 1 times [2021-11-04 10:07:54,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:07:54,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266640443] [2021-11-04 10:07:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:07:54,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:07:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:07:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:07:55,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:07:55,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266640443] [2021-11-04 10:07:55,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266640443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:07:55,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:07:55,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:07:55,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027831555] [2021-11-04 10:07:55,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:07:55,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:07:55,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:07:55,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:07:55,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:07:55,398 INFO L87 Difference]: Start difference. First operand has 1566 states, 1526 states have (on average 1.2673656618610747) internal successors, (1934), 1565 states have internal predecessors, (1934), 0 states have call successors, (0), 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 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:07:56,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:07:57,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:08:05,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:08:06,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:08:06,806 INFO L93 Difference]: Finished difference Result 4330 states and 5364 transitions. [2021-11-04 10:08:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:08:06,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-04 10:08:06,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:08:06,837 INFO L225 Difference]: With dead ends: 4330 [2021-11-04 10:08:06,838 INFO L226 Difference]: Without dead ends: 2632 [2021-11-04 10:08:06,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:08:06,854 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 1535 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 3554 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9904.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 3558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.12ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3554 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11013.15ms IncrementalHoareTripleChecker+Time [2021-11-04 10:08:06,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1535 Valid, 189 Invalid, 3558 Unknown, 0 Unchecked, 28.12ms Time], IncrementalHoareTripleChecker [3 Valid, 3554 Invalid, 1 Unknown, 0 Unchecked, 11013.15ms Time] [2021-11-04 10:08:06,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2021-11-04 10:08:06,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2475. [2021-11-04 10:08:06,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2475 states, 2435 states have (on average 1.2032854209445585) internal successors, (2930), 2474 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:08:06,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2475 states to 2475 states and 2930 transitions. [2021-11-04 10:08:06,984 INFO L78 Accepts]: Start accepts. Automaton has 2475 states and 2930 transitions. Word has length 24 [2021-11-04 10:08:06,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:08:06,984 INFO L470 AbstractCegarLoop]: Abstraction has 2475 states and 2930 transitions. [2021-11-04 10:08:06,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:08:06,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2475 states and 2930 transitions. [2021-11-04 10:08:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-04 10:08:06,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:08:06,990 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] [2021-11-04 10:08:06,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 10:08:06,991 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:08:06,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:08:06,992 INFO L85 PathProgramCache]: Analyzing trace with hash -258996078, now seen corresponding path program 1 times [2021-11-04 10:08:06,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:08:06,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143171866] [2021-11-04 10:08:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:08:06,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:08:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:08:07,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:08:07,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:08:07,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143171866] [2021-11-04 10:08:07,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143171866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:08:07,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:08:07,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:08:07,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158394616] [2021-11-04 10:08:07,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:08:07,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:08:07,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:08:07,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:08:07,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:08:07,194 INFO L87 Difference]: Start difference. First operand 2475 states and 2930 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:08:09,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:08:17,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:08:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:08:18,458 INFO L93 Difference]: Finished difference Result 4842 states and 5803 transitions. [2021-11-04 10:08:18,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:08:18,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-11-04 10:08:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:08:18,466 INFO L225 Difference]: With dead ends: 4842 [2021-11-04 10:08:18,466 INFO L226 Difference]: Without dead ends: 2395 [2021-11-04 10:08:18,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:08:18,471 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 649 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 3353 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10161.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.78ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3353 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10977.56ms IncrementalHoareTripleChecker+Time [2021-11-04 10:08:18,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 0 Invalid, 3372 Unknown, 0 Unchecked, 21.78ms Time], IncrementalHoareTripleChecker [17 Valid, 3353 Invalid, 2 Unknown, 0 Unchecked, 10977.56ms Time] [2021-11-04 10:08:18,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2021-11-04 10:08:18,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2317. [2021-11-04 10:08:18,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 2277 states have (on average 1.2362758014931927) internal successors, (2815), 2316 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:08:18,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2815 transitions. [2021-11-04 10:08:18,510 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2815 transitions. Word has length 36 [2021-11-04 10:08:18,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:08:18,511 INFO L470 AbstractCegarLoop]: Abstraction has 2317 states and 2815 transitions. [2021-11-04 10:08:18,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:08:18,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2815 transitions. [2021-11-04 10:08:18,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-04 10:08:18,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:08:18,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:08:18,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 10:08:18,513 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:08:18,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:08:18,513 INFO L85 PathProgramCache]: Analyzing trace with hash 849800372, now seen corresponding path program 1 times [2021-11-04 10:08:18,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:08:18,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20950881] [2021-11-04 10:08:18,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:08:18,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:08:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:08:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:08:18,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:08:18,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20950881] [2021-11-04 10:08:18,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20950881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:08:18,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:08:18,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:08:18,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678029234] [2021-11-04 10:08:18,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:08:18,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:08:18,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:08:18,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:08:18,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:08:18,659 INFO L87 Difference]: Start difference. First operand 2317 states and 2815 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:08:20,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:08:24,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:08:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:08:28,464 INFO L93 Difference]: Finished difference Result 5310 states and 6341 transitions. [2021-11-04 10:08:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:08:28,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-04 10:08:28,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:08:28,474 INFO L225 Difference]: With dead ends: 5310 [2021-11-04 10:08:28,474 INFO L226 Difference]: Without dead ends: 3021 [2021-11-04 10:08:28,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:08:28,479 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1017 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 3385 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8894.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.39ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3385 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9601.92ms IncrementalHoareTripleChecker+Time [2021-11-04 10:08:28,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1017 Valid, 0 Invalid, 3398 Unknown, 0 Unchecked, 11.39ms Time], IncrementalHoareTripleChecker [11 Valid, 3385 Invalid, 2 Unknown, 0 Unchecked, 9601.92ms Time] [2021-11-04 10:08:28,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2021-11-04 10:08:28,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2818. [2021-11-04 10:08:28,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2778 states have (on average 1.2062634989200864) internal successors, (3351), 2817 states have internal predecessors, (3351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:08:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 3351 transitions. [2021-11-04 10:08:28,536 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 3351 transitions. Word has length 46 [2021-11-04 10:08:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:08:28,536 INFO L470 AbstractCegarLoop]: Abstraction has 2818 states and 3351 transitions. [2021-11-04 10:08:28,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:08:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 3351 transitions. [2021-11-04 10:08:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-04 10:08:28,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:08:28,537 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] [2021-11-04 10:08:28,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 10:08:28,538 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:08:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:08:28,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1502608141, now seen corresponding path program 1 times [2021-11-04 10:08:28,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:08:28,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314832716] [2021-11-04 10:08:28,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:08:28,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:08:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:08:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:08:28,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:08:28,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314832716] [2021-11-04 10:08:28,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314832716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:08:28,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:08:28,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:08:28,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589630538] [2021-11-04 10:08:28,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:08:28,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:08:28,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:08:28,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:08:28,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:08:28,645 INFO L87 Difference]: Start difference. First operand 2818 states and 3351 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:08:30,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:08:34,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:08:37,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:08:37,639 INFO L93 Difference]: Finished difference Result 7818 states and 9307 transitions. [2021-11-04 10:08:37,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:08:37,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-04 10:08:37,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:08:37,652 INFO L225 Difference]: With dead ends: 7818 [2021-11-04 10:08:37,652 INFO L226 Difference]: Without dead ends: 5028 [2021-11-04 10:08:37,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:08:37,656 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1386 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 3834 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8059.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.25ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3834 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8811.48ms IncrementalHoareTripleChecker+Time [2021-11-04 10:08:37,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1386 Valid, 0 Invalid, 3847 Unknown, 0 Unchecked, 6.25ms Time], IncrementalHoareTripleChecker [11 Valid, 3834 Invalid, 2 Unknown, 0 Unchecked, 8811.48ms Time] [2021-11-04 10:08:37,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2021-11-04 10:08:37,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4801. [2021-11-04 10:08:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4801 states, 4761 states have (on average 1.2100399075824406) internal successors, (5761), 4800 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:08:37,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4801 states to 4801 states and 5761 transitions. [2021-11-04 10:08:37,742 INFO L78 Accepts]: Start accepts. Automaton has 4801 states and 5761 transitions. Word has length 47 [2021-11-04 10:08:37,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:08:37,743 INFO L470 AbstractCegarLoop]: Abstraction has 4801 states and 5761 transitions. [2021-11-04 10:08:37,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:08:37,743 INFO L276 IsEmpty]: Start isEmpty. Operand 4801 states and 5761 transitions. [2021-11-04 10:08:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-04 10:08:37,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:08:37,744 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:08:37,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 10:08:37,744 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:08:37,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:08:37,745 INFO L85 PathProgramCache]: Analyzing trace with hash -129293626, now seen corresponding path program 1 times [2021-11-04 10:08:37,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:08:37,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790334635] [2021-11-04 10:08:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:08:37,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:08:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:08:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:08:37,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:08:37,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790334635] [2021-11-04 10:08:37,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790334635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:08:37,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:08:37,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:08:37,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75844432] [2021-11-04 10:08:37,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:08:37,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:08:37,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:08:37,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:08:37,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:08:37,841 INFO L87 Difference]: Start difference. First operand 4801 states and 5761 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:08:40,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:08:45,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:08:48,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:08:48,600 INFO L93 Difference]: Finished difference Result 13833 states and 16657 transitions. [2021-11-04 10:08:48,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:08:48,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-04 10:08:48,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:08:48,627 INFO L225 Difference]: With dead ends: 13833 [2021-11-04 10:08:48,632 INFO L226 Difference]: Without dead ends: 9095 [2021-11-04 10:08:48,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:08:48,644 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1402 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 3909 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9426.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.14ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3909 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10477.82ms IncrementalHoareTripleChecker+Time [2021-11-04 10:08:48,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1402 Valid, 0 Invalid, 3912 Unknown, 0 Unchecked, 6.14ms Time], IncrementalHoareTripleChecker [1 Valid, 3909 Invalid, 2 Unknown, 0 Unchecked, 10477.82ms Time] [2021-11-04 10:08:48,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9095 states. [2021-11-04 10:08:48,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9095 to 8924. [2021-11-04 10:08:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8924 states, 8884 states have (on average 1.2164565511031067) internal successors, (10807), 8923 states have internal predecessors, (10807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:08:48,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8924 states to 8924 states and 10807 transitions. [2021-11-04 10:08:48,849 INFO L78 Accepts]: Start accepts. Automaton has 8924 states and 10807 transitions. Word has length 49 [2021-11-04 10:08:48,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:08:48,850 INFO L470 AbstractCegarLoop]: Abstraction has 8924 states and 10807 transitions. [2021-11-04 10:08:48,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:08:48,850 INFO L276 IsEmpty]: Start isEmpty. Operand 8924 states and 10807 transitions. [2021-11-04 10:08:48,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-04 10:08:48,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:08:48,851 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:08:48,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 10:08:48,851 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:08:48,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:08:48,852 INFO L85 PathProgramCache]: Analyzing trace with hash 128871812, now seen corresponding path program 1 times [2021-11-04 10:08:48,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:08:48,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780408921] [2021-11-04 10:08:48,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:08:48,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:08:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:08:48,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 10:08:48,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:08:48,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780408921] [2021-11-04 10:08:48,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780408921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:08:48,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:08:48,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:08:48,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749742134] [2021-11-04 10:08:48,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:08:48,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:08:48,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:08:48,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:08:48,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:08:48,997 INFO L87 Difference]: Start difference. First operand 8924 states and 10807 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:08:52,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:08:56,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:09:01,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:09:01,927 INFO L93 Difference]: Finished difference Result 10480 states and 12568 transitions. [2021-11-04 10:09:01,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:09:01,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-04 10:09:01,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:09:01,959 INFO L225 Difference]: With dead ends: 10480 [2021-11-04 10:09:01,967 INFO L226 Difference]: Without dead ends: 10476 [2021-11-04 10:09:01,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:09:01,972 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 931 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 5039 mSolverCounterSat, 28 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11331.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.66ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5039 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12618.05ms IncrementalHoareTripleChecker+Time [2021-11-04 10:09:01,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 0 Invalid, 5069 Unknown, 0 Unchecked, 21.66ms Time], IncrementalHoareTripleChecker [28 Valid, 5039 Invalid, 2 Unknown, 0 Unchecked, 12618.05ms Time] [2021-11-04 10:09:01,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10476 states. [2021-11-04 10:09:02,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10476 to 10295. [2021-11-04 10:09:02,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10295 states, 10255 states have (on average 1.2081911262798635) internal successors, (12390), 10294 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:09:02,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10295 states to 10295 states and 12390 transitions. [2021-11-04 10:09:02,176 INFO L78 Accepts]: Start accepts. Automaton has 10295 states and 12390 transitions. Word has length 49 [2021-11-04 10:09:02,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:09:02,178 INFO L470 AbstractCegarLoop]: Abstraction has 10295 states and 12390 transitions. [2021-11-04 10:09:02,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:09:02,179 INFO L276 IsEmpty]: Start isEmpty. Operand 10295 states and 12390 transitions. [2021-11-04 10:09:02,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-04 10:09:02,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:09:02,180 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:09:02,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 10:09:02,181 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:09:02,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:09:02,181 INFO L85 PathProgramCache]: Analyzing trace with hash -708106745, now seen corresponding path program 1 times [2021-11-04 10:09:02,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:09:02,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234127728] [2021-11-04 10:09:02,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:09:02,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:09:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:09:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 10:09:02,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:09:02,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234127728] [2021-11-04 10:09:02,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234127728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:09:02,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:09:02,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:09:02,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790229177] [2021-11-04 10:09:02,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:09:02,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:09:02,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:09:02,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:09:02,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:09:02,302 INFO L87 Difference]: Start difference. First operand 10295 states and 12390 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:09:04,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:09:09,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:09:13,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:09:13,829 INFO L93 Difference]: Finished difference Result 10476 states and 12564 transitions. [2021-11-04 10:09:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:09:13,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-04 10:09:13,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:09:13,844 INFO L225 Difference]: With dead ends: 10476 [2021-11-04 10:09:13,845 INFO L226 Difference]: Without dead ends: 10472 [2021-11-04 10:09:13,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.31ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:09:13,848 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 923 mSDsluCounter, 3310 mSDsCounter, 0 mSdLazyCounter, 5038 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10205.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.85ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5038 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11273.76ms IncrementalHoareTripleChecker+Time [2021-11-04 10:09:13,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 0 Invalid, 5070 Unknown, 0 Unchecked, 11.85ms Time], IncrementalHoareTripleChecker [30 Valid, 5038 Invalid, 2 Unknown, 0 Unchecked, 11273.76ms Time] [2021-11-04 10:09:13,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10472 states. [2021-11-04 10:09:13,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10472 to 10299. [2021-11-04 10:09:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10299 states, 10259 states have (on average 1.2081099522370602) internal successors, (12394), 10298 states have internal predecessors, (12394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:09:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10299 states to 10299 states and 12394 transitions. [2021-11-04 10:09:14,006 INFO L78 Accepts]: Start accepts. Automaton has 10299 states and 12394 transitions. Word has length 51 [2021-11-04 10:09:14,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:09:14,006 INFO L470 AbstractCegarLoop]: Abstraction has 10299 states and 12394 transitions. [2021-11-04 10:09:14,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:09:14,006 INFO L276 IsEmpty]: Start isEmpty. Operand 10299 states and 12394 transitions. [2021-11-04 10:09:14,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-04 10:09:14,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:09:14,007 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:09:14,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 10:09:14,008 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:09:14,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:09:14,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1885615350, now seen corresponding path program 1 times [2021-11-04 10:09:14,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:09:14,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093622389] [2021-11-04 10:09:14,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:09:14,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:09:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:09:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 10:09:14,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:09:14,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093622389] [2021-11-04 10:09:14,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093622389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:09:14,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:09:14,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:09:14,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233215080] [2021-11-04 10:09:14,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:09:14,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:09:14,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:09:14,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:09:14,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:09:14,134 INFO L87 Difference]: Start difference. First operand 10299 states and 12394 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:09:16,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:09:21,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:09:26,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:09:26,192 INFO L93 Difference]: Finished difference Result 10472 states and 12560 transitions. [2021-11-04 10:09:26,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:09:26,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-04 10:09:26,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:09:26,214 INFO L225 Difference]: With dead ends: 10472 [2021-11-04 10:09:26,215 INFO L226 Difference]: Without dead ends: 10468 [2021-11-04 10:09:26,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.36ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:09:26,218 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 917 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 5040 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10447.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.67ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5040 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11749.41ms IncrementalHoareTripleChecker+Time [2021-11-04 10:09:26,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 0 Invalid, 5071 Unknown, 0 Unchecked, 14.67ms Time], IncrementalHoareTripleChecker [30 Valid, 5040 Invalid, 1 Unknown, 0 Unchecked, 11749.41ms Time] [2021-11-04 10:09:26,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10468 states. [2021-11-04 10:09:26,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10468 to 10303. [2021-11-04 10:09:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10303 states, 10263 states have (on average 1.2080288414693559) internal successors, (12398), 10302 states have internal predecessors, (12398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:09:26,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10303 states to 10303 states and 12398 transitions. [2021-11-04 10:09:26,404 INFO L78 Accepts]: Start accepts. Automaton has 10303 states and 12398 transitions. Word has length 53 [2021-11-04 10:09:26,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:09:26,405 INFO L470 AbstractCegarLoop]: Abstraction has 10303 states and 12398 transitions. [2021-11-04 10:09:26,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:09:26,405 INFO L276 IsEmpty]: Start isEmpty. Operand 10303 states and 12398 transitions. [2021-11-04 10:09:26,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-04 10:09:26,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:09:26,406 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:09:26,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 10:09:26,406 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:09:26,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:09:26,407 INFO L85 PathProgramCache]: Analyzing trace with hash 399981709, now seen corresponding path program 1 times [2021-11-04 10:09:26,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:09:26,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115445320] [2021-11-04 10:09:26,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:09:26,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:09:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:09:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 10:09:26,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:09:26,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115445320] [2021-11-04 10:09:26,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115445320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:09:26,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:09:26,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:09:26,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732882040] [2021-11-04 10:09:26,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:09:26,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:09:26,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:09:26,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:09:26,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:09:26,541 INFO L87 Difference]: Start difference. First operand 10303 states and 12398 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:09:28,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:09:33,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:09:38,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:09:38,812 INFO L93 Difference]: Finished difference Result 16456 states and 19761 transitions. [2021-11-04 10:09:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:09:38,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 55 [2021-11-04 10:09:38,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:09:38,844 INFO L225 Difference]: With dead ends: 16456 [2021-11-04 10:09:38,845 INFO L226 Difference]: Without dead ends: 16452 [2021-11-04 10:09:38,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.95ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:09:38,853 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1393 mSDsluCounter, 3111 mSDsCounter, 0 mSdLazyCounter, 5086 mSolverCounterSat, 35 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10779.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.09ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 5086 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11893.85ms IncrementalHoareTripleChecker+Time [2021-11-04 10:09:38,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1393 Valid, 0 Invalid, 5123 Unknown, 0 Unchecked, 14.09ms Time], IncrementalHoareTripleChecker [35 Valid, 5086 Invalid, 2 Unknown, 0 Unchecked, 11893.85ms Time] [2021-11-04 10:09:38,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16452 states. [2021-11-04 10:09:39,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16452 to 15953. [2021-11-04 10:09:39,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15953 states, 15913 states have (on average 1.2063093068560296) internal successors, (19196), 15952 states have internal predecessors, (19196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:09:39,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15953 states to 15953 states and 19196 transitions. [2021-11-04 10:09:39,178 INFO L78 Accepts]: Start accepts. Automaton has 15953 states and 19196 transitions. Word has length 55 [2021-11-04 10:09:39,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:09:39,178 INFO L470 AbstractCegarLoop]: Abstraction has 15953 states and 19196 transitions. [2021-11-04 10:09:39,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:09:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 15953 states and 19196 transitions. [2021-11-04 10:09:39,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-04 10:09:39,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:09:39,179 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:09:39,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 10:09:39,180 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:09:39,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:09:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2130467472, now seen corresponding path program 1 times [2021-11-04 10:09:39,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:09:39,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810539693] [2021-11-04 10:09:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:09:39,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:09:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:09:39,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 10:09:39,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:09:39,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810539693] [2021-11-04 10:09:39,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810539693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:09:39,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:09:39,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:09:39,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145060681] [2021-11-04 10:09:39,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:09:39,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:09:39,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:09:39,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:09:39,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:09:39,373 INFO L87 Difference]: Start difference. First operand 15953 states and 19196 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:09:40,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:09:42,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:09:47,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:09:52,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:09:52,561 INFO L93 Difference]: Finished difference Result 16114 states and 19350 transitions. [2021-11-04 10:09:52,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:09:52,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2021-11-04 10:09:52,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:09:52,589 INFO L225 Difference]: With dead ends: 16114 [2021-11-04 10:09:52,589 INFO L226 Difference]: Without dead ends: 16110 [2021-11-04 10:09:52,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.73ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:09:52,596 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 905 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 5039 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11568.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.14ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5039 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12817.39ms IncrementalHoareTripleChecker+Time [2021-11-04 10:09:52,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 0 Invalid, 5071 Unknown, 0 Unchecked, 13.14ms Time], IncrementalHoareTripleChecker [30 Valid, 5039 Invalid, 2 Unknown, 0 Unchecked, 12817.39ms Time] [2021-11-04 10:09:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16110 states. [2021-11-04 10:09:52,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16110 to 15961. [2021-11-04 10:09:52,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15961 states, 15921 states have (on average 1.2062056403492243) internal successors, (19204), 15960 states have internal predecessors, (19204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:09:52,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15961 states to 15961 states and 19204 transitions. [2021-11-04 10:09:52,916 INFO L78 Accepts]: Start accepts. Automaton has 15961 states and 19204 transitions. Word has length 57 [2021-11-04 10:09:52,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:09:52,916 INFO L470 AbstractCegarLoop]: Abstraction has 15961 states and 19204 transitions. [2021-11-04 10:09:52,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:09:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 15961 states and 19204 transitions. [2021-11-04 10:09:52,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-04 10:09:52,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:09:52,917 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:09:52,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 10:09:52,918 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:09:52,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:09:52,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1320024813, now seen corresponding path program 1 times [2021-11-04 10:09:52,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:09:52,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577081296] [2021-11-04 10:09:52,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:09:52,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:09:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:09:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 10:09:53,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:09:53,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577081296] [2021-11-04 10:09:53,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577081296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:09:53,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:09:53,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:09:53,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320327036] [2021-11-04 10:09:53,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:09:53,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:09:53,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:09:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:09:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:09:53,036 INFO L87 Difference]: Start difference. First operand 15961 states and 19204 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:09:55,075 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:10:00,535 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 [] [2021-11-04 10:10:05,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:10:05,461 INFO L93 Difference]: Finished difference Result 26455 states and 32079 transitions. [2021-11-04 10:10:05,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:10:05,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 59 [2021-11-04 10:10:05,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:10:05,498 INFO L225 Difference]: With dead ends: 26455 [2021-11-04 10:10:05,498 INFO L226 Difference]: Without dead ends: 26451 [2021-11-04 10:10:05,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.65ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:10:05,508 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1105 mSDsluCounter, 3314 mSDsCounter, 0 mSdLazyCounter, 5398 mSolverCounterSat, 37 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10800.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.76ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 5398 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11956.20ms IncrementalHoareTripleChecker+Time [2021-11-04 10:10:05,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 0 Invalid, 5437 Unknown, 0 Unchecked, 13.76ms Time], IncrementalHoareTripleChecker [37 Valid, 5398 Invalid, 2 Unknown, 0 Unchecked, 11956.20ms Time] [2021-11-04 10:10:05,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26451 states. [2021-11-04 10:10:05,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26451 to 23953. [2021-11-04 10:10:05,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23953 states, 23913 states have (on average 1.213565842846987) internal successors, (29020), 23952 states have internal predecessors, (29020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:10:06,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23953 states to 23953 states and 29020 transitions. [2021-11-04 10:10:06,022 INFO L78 Accepts]: Start accepts. Automaton has 23953 states and 29020 transitions. Word has length 59 [2021-11-04 10:10:06,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:10:06,023 INFO L470 AbstractCegarLoop]: Abstraction has 23953 states and 29020 transitions. [2021-11-04 10:10:06,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:10:06,023 INFO L276 IsEmpty]: Start isEmpty. Operand 23953 states and 29020 transitions. [2021-11-04 10:10:06,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-04 10:10:06,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:10:06,024 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:10:06,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-04 10:10:06,024 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:10:06,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:10:06,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1528357866, now seen corresponding path program 1 times [2021-11-04 10:10:06,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:10:06,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362742060] [2021-11-04 10:10:06,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:10:06,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:10:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:10:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 10:10:06,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:10:06,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362742060] [2021-11-04 10:10:06,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362742060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:10:06,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:10:06,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:10:06,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086723262] [2021-11-04 10:10:06,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:10:06,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:10:06,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:10:06,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:10:06,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:10:06,131 INFO L87 Difference]: Start difference. First operand 23953 states and 29020 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:10:08,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:10:13,267 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 [] [2021-11-04 10:10:18,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:10:18,132 INFO L93 Difference]: Finished difference Result 24098 states and 29158 transitions. [2021-11-04 10:10:18,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:10:18,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2021-11-04 10:10:18,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:10:18,162 INFO L225 Difference]: With dead ends: 24098 [2021-11-04 10:10:18,162 INFO L226 Difference]: Without dead ends: 24094 [2021-11-04 10:10:18,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:10:18,168 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 893 mSDsluCounter, 3310 mSDsCounter, 0 mSdLazyCounter, 5038 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10346.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.91ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5038 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11528.92ms IncrementalHoareTripleChecker+Time [2021-11-04 10:10:18,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 0 Invalid, 5070 Unknown, 0 Unchecked, 12.91ms Time], IncrementalHoareTripleChecker [30 Valid, 5038 Invalid, 2 Unknown, 0 Unchecked, 11528.92ms Time] [2021-11-04 10:10:18,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24094 states. [2021-11-04 10:10:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24094 to 23961. [2021-11-04 10:10:18,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23961 states, 23921 states have (on average 1.213494419129635) internal successors, (29028), 23960 states have internal predecessors, (29028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:10:18,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23961 states to 23961 states and 29028 transitions. [2021-11-04 10:10:18,615 INFO L78 Accepts]: Start accepts. Automaton has 23961 states and 29028 transitions. Word has length 61 [2021-11-04 10:10:18,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:10:18,616 INFO L470 AbstractCegarLoop]: Abstraction has 23961 states and 29028 transitions. [2021-11-04 10:10:18,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:10:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 23961 states and 29028 transitions. [2021-11-04 10:10:18,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-04 10:10:18,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:10:18,617 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:10:18,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-04 10:10:18,618 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:10:18,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:10:18,618 INFO L85 PathProgramCache]: Analyzing trace with hash 127041433, now seen corresponding path program 1 times [2021-11-04 10:10:18,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:10:18,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007429038] [2021-11-04 10:10:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:10:18,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:10:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:10:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 10:10:18,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:10:18,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007429038] [2021-11-04 10:10:18,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007429038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:10:18,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:10:18,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:10:18,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263636611] [2021-11-04 10:10:18,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:10:18,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:10:18,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:10:18,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:10:18,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:10:18,818 INFO L87 Difference]: Start difference. First operand 23961 states and 29028 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:10:20,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:10:26,118 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 [] [2021-11-04 10:10:31,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:10:31,231 INFO L93 Difference]: Finished difference Result 24094 states and 29154 transitions. [2021-11-04 10:10:31,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:10:31,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-04 10:10:31,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:10:31,259 INFO L225 Difference]: With dead ends: 24094 [2021-11-04 10:10:31,259 INFO L226 Difference]: Without dead ends: 24012 [2021-11-04 10:10:31,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.72ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:10:31,266 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 885 mSDsluCounter, 3310 mSDsCounter, 0 mSdLazyCounter, 5038 mSolverCounterSat, 32 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10673.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.37ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 5038 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11922.53ms IncrementalHoareTripleChecker+Time [2021-11-04 10:10:31,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 0 Invalid, 5072 Unknown, 0 Unchecked, 13.37ms Time], IncrementalHoareTripleChecker [32 Valid, 5038 Invalid, 2 Unknown, 0 Unchecked, 11922.53ms Time] [2021-11-04 10:10:31,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24012 states. [2021-11-04 10:10:31,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24012 to 23887. [2021-11-04 10:10:31,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23887 states, 23847 states have (on average 1.213695643057827) internal successors, (28943), 23886 states have internal predecessors, (28943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:10:31,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23887 states to 23887 states and 28943 transitions. [2021-11-04 10:10:31,679 INFO L78 Accepts]: Start accepts. Automaton has 23887 states and 28943 transitions. Word has length 63 [2021-11-04 10:10:31,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:10:31,679 INFO L470 AbstractCegarLoop]: Abstraction has 23887 states and 28943 transitions. [2021-11-04 10:10:31,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:10:31,679 INFO L276 IsEmpty]: Start isEmpty. Operand 23887 states and 28943 transitions. [2021-11-04 10:10:31,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-04 10:10:31,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:10:31,680 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] [2021-11-04 10:10:31,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-04 10:10:31,681 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:10:31,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:10:31,681 INFO L85 PathProgramCache]: Analyzing trace with hash -228169881, now seen corresponding path program 1 times [2021-11-04 10:10:31,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:10:31,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075855472] [2021-11-04 10:10:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:10:31,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:10:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:10:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:10:31,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:10:31,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075855472] [2021-11-04 10:10:31,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075855472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:10:31,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:10:31,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:10:31,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453280505] [2021-11-04 10:10:31,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:10:31,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:10:31,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:10:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:10:31,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:10:31,762 INFO L87 Difference]: Start difference. First operand 23887 states and 28943 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:10:33,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:10:39,054 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 [] [2021-11-04 10:10:42,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:10:42,879 INFO L93 Difference]: Finished difference Result 52319 states and 64145 transitions. [2021-11-04 10:10:42,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:10:42,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-04 10:10:42,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:10:42,919 INFO L225 Difference]: With dead ends: 52319 [2021-11-04 10:10:42,919 INFO L226 Difference]: Without dead ends: 28495 [2021-11-04 10:10:42,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:10:42,947 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 655 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3905 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9366.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.00ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3905 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10490.17ms IncrementalHoareTripleChecker+Time [2021-11-04 10:10:42,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 0 Invalid, 3923 Unknown, 0 Unchecked, 8.00ms Time], IncrementalHoareTripleChecker [16 Valid, 3905 Invalid, 2 Unknown, 0 Unchecked, 10490.17ms Time] [2021-11-04 10:10:42,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28495 states. [2021-11-04 10:10:43,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28495 to 28287. [2021-11-04 10:10:43,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28287 states, 28247 states have (on average 1.2271037632314936) internal successors, (34662), 28286 states have internal predecessors, (34662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:10:43,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28287 states to 28287 states and 34662 transitions. [2021-11-04 10:10:43,511 INFO L78 Accepts]: Start accepts. Automaton has 28287 states and 34662 transitions. Word has length 64 [2021-11-04 10:10:43,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:10:43,511 INFO L470 AbstractCegarLoop]: Abstraction has 28287 states and 34662 transitions. [2021-11-04 10:10:43,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:10:43,512 INFO L276 IsEmpty]: Start isEmpty. Operand 28287 states and 34662 transitions. [2021-11-04 10:10:43,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-04 10:10:43,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:10:43,513 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:10:43,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-04 10:10:43,514 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:10:43,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:10:43,514 INFO L85 PathProgramCache]: Analyzing trace with hash -351100239, now seen corresponding path program 1 times [2021-11-04 10:10:43,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:10:43,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880543305] [2021-11-04 10:10:43,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:10:43,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:10:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:10:43,626 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 10:10:43,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:10:43,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880543305] [2021-11-04 10:10:43,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880543305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:10:43,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:10:43,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:10:43,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30572184] [2021-11-04 10:10:43,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:10:43,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:10:43,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:10:43,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:10:43,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:10:43,629 INFO L87 Difference]: Start difference. First operand 28287 states and 34662 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:10:45,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:10:50,880 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 [] [2021-11-04 10:10:54,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:10:54,469 INFO L93 Difference]: Finished difference Result 60949 states and 75244 transitions. [2021-11-04 10:10:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:10:54,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-04 10:10:54,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:10:54,513 INFO L225 Difference]: With dead ends: 60949 [2021-11-04 10:10:54,513 INFO L226 Difference]: Without dead ends: 32699 [2021-11-04 10:10:54,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:10:54,541 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 615 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 4010 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9121.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.27ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4010 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10166.38ms IncrementalHoareTripleChecker+Time [2021-11-04 10:10:54,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 0 Invalid, 4023 Unknown, 0 Unchecked, 8.27ms Time], IncrementalHoareTripleChecker [11 Valid, 4010 Invalid, 2 Unknown, 0 Unchecked, 10166.38ms Time] [2021-11-04 10:10:54,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32699 states. [2021-11-04 10:10:55,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32699 to 32491. [2021-11-04 10:10:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32491 states, 32451 states have (on average 1.2360790114326214) internal successors, (40112), 32490 states have internal predecessors, (40112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:10:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32491 states to 32491 states and 40112 transitions. [2021-11-04 10:10:55,159 INFO L78 Accepts]: Start accepts. Automaton has 32491 states and 40112 transitions. Word has length 99 [2021-11-04 10:10:55,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:10:55,160 INFO L470 AbstractCegarLoop]: Abstraction has 32491 states and 40112 transitions. [2021-11-04 10:10:55,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:10:55,160 INFO L276 IsEmpty]: Start isEmpty. Operand 32491 states and 40112 transitions. [2021-11-04 10:10:55,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-04 10:10:55,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:10:55,161 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:10:55,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-04 10:10:55,162 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:10:55,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:10:55,162 INFO L85 PathProgramCache]: Analyzing trace with hash -485113745, now seen corresponding path program 1 times [2021-11-04 10:10:55,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:10:55,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161626791] [2021-11-04 10:10:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:10:55,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:10:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:10:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 10:10:55,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:10:55,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161626791] [2021-11-04 10:10:55,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161626791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:10:55,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:10:55,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:10:55,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831023298] [2021-11-04 10:10:55,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:10:55,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:10:55,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:10:55,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:10:55,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:10:55,315 INFO L87 Difference]: Start difference. First operand 32491 states and 40112 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:10:58,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:11:03,054 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 [] [2021-11-04 10:11:07,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:11:07,071 INFO L93 Difference]: Finished difference Result 69492 states and 86384 transitions. [2021-11-04 10:11:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:11:07,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-04 10:11:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:11:07,124 INFO L225 Difference]: With dead ends: 69492 [2021-11-04 10:11:07,124 INFO L226 Difference]: Without dead ends: 37064 [2021-11-04 10:11:07,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:11:07,152 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1004 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 3638 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9826.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.21ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3638 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11042.14ms IncrementalHoareTripleChecker+Time [2021-11-04 10:11:07,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1004 Valid, 0 Invalid, 3654 Unknown, 0 Unchecked, 7.21ms Time], IncrementalHoareTripleChecker [14 Valid, 3638 Invalid, 2 Unknown, 0 Unchecked, 11042.14ms Time] [2021-11-04 10:11:07,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37064 states. [2021-11-04 10:11:07,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37064 to 36823. [2021-11-04 10:11:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36823 states, 36783 states have (on average 1.2423130250387406) internal successors, (45696), 36822 states have internal predecessors, (45696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:11:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36823 states to 36823 states and 45696 transitions. [2021-11-04 10:11:07,878 INFO L78 Accepts]: Start accepts. Automaton has 36823 states and 45696 transitions. Word has length 99 [2021-11-04 10:11:07,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:11:07,878 INFO L470 AbstractCegarLoop]: Abstraction has 36823 states and 45696 transitions. [2021-11-04 10:11:07,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:11:07,878 INFO L276 IsEmpty]: Start isEmpty. Operand 36823 states and 45696 transitions. [2021-11-04 10:11:07,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-04 10:11:07,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:11:07,880 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:11:07,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-04 10:11:07,880 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:11:07,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:11:07,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1338291001, now seen corresponding path program 1 times [2021-11-04 10:11:07,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:11:07,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409681266] [2021-11-04 10:11:07,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:11:07,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:11:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:11:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-04 10:11:07,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:11:07,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409681266] [2021-11-04 10:11:07,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409681266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:11:07,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:11:07,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:11:07,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574312854] [2021-11-04 10:11:07,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:11:07,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:11:07,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:11:07,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:11:07,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:11:07,997 INFO L87 Difference]: Start difference. First operand 36823 states and 45696 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:11:11,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:11:16,333 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 [] [2021-11-04 10:11:19,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:11:19,704 INFO L93 Difference]: Finished difference Result 78055 states and 97380 transitions. [2021-11-04 10:11:19,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:11:19,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 138 [2021-11-04 10:11:19,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:11:19,770 INFO L225 Difference]: With dead ends: 78055 [2021-11-04 10:11:19,770 INFO L226 Difference]: Without dead ends: 41295 [2021-11-04 10:11:19,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:11:19,819 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 618 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 3442 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9625.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.84ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3442 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10929.67ms IncrementalHoareTripleChecker+Time [2021-11-04 10:11:19,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 0 Invalid, 3454 Unknown, 0 Unchecked, 6.84ms Time], IncrementalHoareTripleChecker [10 Valid, 3442 Invalid, 2 Unknown, 0 Unchecked, 10929.67ms Time] [2021-11-04 10:11:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41295 states. [2021-11-04 10:11:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41295 to 41087. [2021-11-04 10:11:20,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41087 states, 41047 states have (on average 1.2476429458912954) internal successors, (51212), 41086 states have internal predecessors, (51212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:11:20,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41087 states to 41087 states and 51212 transitions. [2021-11-04 10:11:20,661 INFO L78 Accepts]: Start accepts. Automaton has 41087 states and 51212 transitions. Word has length 138 [2021-11-04 10:11:20,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:11:20,662 INFO L470 AbstractCegarLoop]: Abstraction has 41087 states and 51212 transitions. [2021-11-04 10:11:20,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:11:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 41087 states and 51212 transitions. [2021-11-04 10:11:20,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-04 10:11:20,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:11:20,664 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:11:20,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-04 10:11:20,664 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:11:20,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:11:20,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1472304507, now seen corresponding path program 1 times [2021-11-04 10:11:20,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:11:20,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740023329] [2021-11-04 10:11:20,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:11:20,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:11:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:11:20,758 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-04 10:11:20,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:11:20,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740023329] [2021-11-04 10:11:20,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740023329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:11:20,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:11:20,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:11:20,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300731657] [2021-11-04 10:11:20,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:11:20,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:11:20,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:11:20,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:11:20,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:11:20,761 INFO L87 Difference]: Start difference. First operand 41087 states and 51212 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:11:24,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:11:29,595 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 [] [2021-11-04 10:11:34,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:11:34,185 INFO L93 Difference]: Finished difference Result 86617 states and 108480 transitions. [2021-11-04 10:11:34,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:11:34,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 138 [2021-11-04 10:11:34,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:11:34,261 INFO L225 Difference]: With dead ends: 86617 [2021-11-04 10:11:34,261 INFO L226 Difference]: Without dead ends: 45593 [2021-11-04 10:11:34,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:11:34,300 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 627 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 4005 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10960.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.92ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4005 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12374.56ms IncrementalHoareTripleChecker+Time [2021-11-04 10:11:34,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 0 Invalid, 4018 Unknown, 0 Unchecked, 9.92ms Time], IncrementalHoareTripleChecker [11 Valid, 4005 Invalid, 2 Unknown, 0 Unchecked, 12374.56ms Time] [2021-11-04 10:11:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45593 states. [2021-11-04 10:11:35,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45593 to 45385. [2021-11-04 10:11:35,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45385 states, 45345 states have (on average 1.2517807917080164) internal successors, (56762), 45384 states have internal predecessors, (56762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:11:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45385 states to 45385 states and 56762 transitions. [2021-11-04 10:11:35,107 INFO L78 Accepts]: Start accepts. Automaton has 45385 states and 56762 transitions. Word has length 138 [2021-11-04 10:11:35,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:11:35,108 INFO L470 AbstractCegarLoop]: Abstraction has 45385 states and 56762 transitions. [2021-11-04 10:11:35,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:11:35,108 INFO L276 IsEmpty]: Start isEmpty. Operand 45385 states and 56762 transitions. [2021-11-04 10:11:35,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-04 10:11:35,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:11:35,110 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:11:35,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-04 10:11:35,110 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:11:35,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:11:35,110 INFO L85 PathProgramCache]: Analyzing trace with hash -665923043, now seen corresponding path program 1 times [2021-11-04 10:11:35,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:11:35,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366798844] [2021-11-04 10:11:35,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:11:35,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:11:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:11:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-04 10:11:35,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:11:35,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366798844] [2021-11-04 10:11:35,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366798844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:11:35,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:11:35,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 10:11:35,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879265629] [2021-11-04 10:11:35,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:11:35,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:11:35,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:11:35,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:11:35,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:11:35,218 INFO L87 Difference]: Start difference. First operand 45385 states and 56762 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:11:36,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:11:39,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:11:41,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:11:49,100 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 [] [2021-11-04 10:11:56,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:11:56,066 INFO L93 Difference]: Finished difference Result 139087 states and 174234 transitions. [2021-11-04 10:11:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:11:56,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 163 [2021-11-04 10:11:56,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:11:56,214 INFO L225 Difference]: With dead ends: 139087 [2021-11-04 10:11:56,214 INFO L226 Difference]: Without dead ends: 93765 [2021-11-04 10:11:56,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:11:56,271 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2749 mSDsluCounter, 4607 mSDsCounter, 0 mSdLazyCounter, 7801 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17364.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2749 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.99ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7801 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19247.14ms IncrementalHoareTripleChecker+Time [2021-11-04 10:11:56,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2749 Valid, 0 Invalid, 7812 Unknown, 0 Unchecked, 21.99ms Time], IncrementalHoareTripleChecker [8 Valid, 7801 Invalid, 3 Unknown, 0 Unchecked, 19247.14ms Time] [2021-11-04 10:11:56,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93765 states. [2021-11-04 10:11:57,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93765 to 49513. [2021-11-04 10:11:57,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49513 states, 49473 states have (on average 1.2560790734339944) internal successors, (62142), 49512 states have internal predecessors, (62142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:11:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49513 states to 49513 states and 62142 transitions. [2021-11-04 10:11:57,711 INFO L78 Accepts]: Start accepts. Automaton has 49513 states and 62142 transitions. Word has length 163 [2021-11-04 10:11:57,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:11:57,711 INFO L470 AbstractCegarLoop]: Abstraction has 49513 states and 62142 transitions. [2021-11-04 10:11:57,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:11:57,711 INFO L276 IsEmpty]: Start isEmpty. Operand 49513 states and 62142 transitions. [2021-11-04 10:11:57,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-04 10:11:57,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:11:57,713 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:11:57,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-04 10:11:57,714 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:11:57,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:11:57,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1966091668, now seen corresponding path program 1 times [2021-11-04 10:11:57,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:11:57,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011210145] [2021-11-04 10:11:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:11:57,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:11:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:11:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-04 10:11:57,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:11:57,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011210145] [2021-11-04 10:11:57,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011210145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:11:57,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:11:57,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 10:11:57,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377445520] [2021-11-04 10:11:57,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:11:57,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:11:57,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:11:57,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:11:57,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:11:57,975 INFO L87 Difference]: Start difference. First operand 49513 states and 62142 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:12:00,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:12:04,141 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 [] [2021-11-04 10:12:10,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:12:10,751 INFO L93 Difference]: Finished difference Result 144549 states and 180756 transitions. [2021-11-04 10:12:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:12:10,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-11-04 10:12:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:12:11,005 INFO L225 Difference]: With dead ends: 144549 [2021-11-04 10:12:11,005 INFO L226 Difference]: Without dead ends: 95099 [2021-11-04 10:12:11,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:12:11,050 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1295 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 3527 mSolverCounterSat, 73 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9460.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.62ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3527 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10714.78ms IncrementalHoareTripleChecker+Time [2021-11-04 10:12:11,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1295 Valid, 0 Invalid, 3602 Unknown, 0 Unchecked, 7.62ms Time], IncrementalHoareTripleChecker [73 Valid, 3527 Invalid, 2 Unknown, 0 Unchecked, 10714.78ms Time] [2021-11-04 10:12:11,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95099 states. [2021-11-04 10:12:12,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95099 to 94474. [2021-11-04 10:12:13,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94474 states, 94434 states have (on average 1.2267403689349174) internal successors, (115846), 94473 states have internal predecessors, (115846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:12:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94474 states to 94474 states and 115846 transitions. [2021-11-04 10:12:13,217 INFO L78 Accepts]: Start accepts. Automaton has 94474 states and 115846 transitions. Word has length 164 [2021-11-04 10:12:13,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:12:13,218 INFO L470 AbstractCegarLoop]: Abstraction has 94474 states and 115846 transitions. [2021-11-04 10:12:13,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:12:13,218 INFO L276 IsEmpty]: Start isEmpty. Operand 94474 states and 115846 transitions. [2021-11-04 10:12:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-04 10:12:13,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:12:13,220 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:12:13,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-04 10:12:13,220 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:12:13,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:12:13,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1966032086, now seen corresponding path program 1 times [2021-11-04 10:12:13,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:12:13,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615540560] [2021-11-04 10:12:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:12:13,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:12:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:12:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-04 10:12:13,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:12:13,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615540560] [2021-11-04 10:12:13,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615540560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:12:13,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:12:13,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:12:13,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014990239] [2021-11-04 10:12:13,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:12:13,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:12:13,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:12:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:12:13,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:12:13,362 INFO L87 Difference]: Start difference. First operand 94474 states and 115846 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:12:14,509 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:12:16,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:12:22,498 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:12:31,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:12:31,105 INFO L93 Difference]: Finished difference Result 104023 states and 127448 transitions. [2021-11-04 10:12:31,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:12:31,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-11-04 10:12:31,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:12:31,282 INFO L225 Difference]: With dead ends: 104023 [2021-11-04 10:12:31,282 INFO L226 Difference]: Without dead ends: 104009 [2021-11-04 10:12:31,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.18ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:12:31,308 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3199 mSDsluCounter, 3167 mSDsCounter, 0 mSdLazyCounter, 5854 mSolverCounterSat, 35 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13355.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3199 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.10ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 5854 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15273.33ms IncrementalHoareTripleChecker+Time [2021-11-04 10:12:31,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3199 Valid, 0 Invalid, 5891 Unknown, 0 Unchecked, 20.10ms Time], IncrementalHoareTripleChecker [35 Valid, 5854 Invalid, 2 Unknown, 0 Unchecked, 15273.33ms Time] [2021-11-04 10:12:31,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104009 states. [2021-11-04 10:12:33,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104009 to 101210. [2021-11-04 10:12:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101210 states, 101170 states have (on average 1.2257388553919146) internal successors, (124008), 101209 states have internal predecessors, (124008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:12:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101210 states to 101210 states and 124008 transitions. [2021-11-04 10:12:34,060 INFO L78 Accepts]: Start accepts. Automaton has 101210 states and 124008 transitions. Word has length 164 [2021-11-04 10:12:34,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:12:34,060 INFO L470 AbstractCegarLoop]: Abstraction has 101210 states and 124008 transitions. [2021-11-04 10:12:34,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:12:34,060 INFO L276 IsEmpty]: Start isEmpty. Operand 101210 states and 124008 transitions. [2021-11-04 10:12:34,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-04 10:12:34,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:12:34,062 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:12:34,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-04 10:12:34,063 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:12:34,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:12:34,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1865075794, now seen corresponding path program 1 times [2021-11-04 10:12:34,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:12:34,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673271279] [2021-11-04 10:12:34,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:12:34,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:12:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:12:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-04 10:12:34,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:12:34,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673271279] [2021-11-04 10:12:34,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673271279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:12:34,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:12:34,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 10:12:34,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614921791] [2021-11-04 10:12:34,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:12:34,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:12:34,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:12:34,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:12:34,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:12:34,313 INFO L87 Difference]: Start difference. First operand 101210 states and 124008 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:12:35,337 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:12:37,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:12:39,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:12:46,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:12:52,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:12:52,453 INFO L93 Difference]: Finished difference Result 106671 states and 130107 transitions. [2021-11-04 10:12:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:12:52,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 170 [2021-11-04 10:12:52,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:12:52,637 INFO L225 Difference]: With dead ends: 106671 [2021-11-04 10:12:52,637 INFO L226 Difference]: Without dead ends: 106657 [2021-11-04 10:12:52,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.10ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:12:52,672 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1736 mSDsluCounter, 3300 mSDsCounter, 0 mSdLazyCounter, 5941 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13561.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.32ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 5941 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15776.01ms IncrementalHoareTripleChecker+Time [2021-11-04 10:12:52,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1736 Valid, 0 Invalid, 5969 Unknown, 0 Unchecked, 16.32ms Time], IncrementalHoareTripleChecker [26 Valid, 5941 Invalid, 2 Unknown, 0 Unchecked, 15776.01ms Time] [2021-11-04 10:12:52,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106657 states. [2021-11-04 10:12:55,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106657 to 101196. [2021-11-04 10:12:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101196 states, 101163 states have (on average 1.2217411504206084) internal successors, (123595), 101195 states have internal predecessors, (123595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:12:55,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101196 states to 101196 states and 123595 transitions. [2021-11-04 10:12:55,641 INFO L78 Accepts]: Start accepts. Automaton has 101196 states and 123595 transitions. Word has length 170 [2021-11-04 10:12:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:12:55,642 INFO L470 AbstractCegarLoop]: Abstraction has 101196 states and 123595 transitions. [2021-11-04 10:12:55,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:12:55,642 INFO L276 IsEmpty]: Start isEmpty. Operand 101196 states and 123595 transitions. [2021-11-04 10:12:55,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-04 10:12:55,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:12:55,644 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:12:55,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-04 10:12:55,645 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:12:55,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:12:55,645 INFO L85 PathProgramCache]: Analyzing trace with hash -562314245, now seen corresponding path program 1 times [2021-11-04 10:12:55,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:12:55,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999335476] [2021-11-04 10:12:55,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:12:55,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:12:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:12:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-04 10:12:55,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:12:55,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999335476] [2021-11-04 10:12:55,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999335476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:12:55,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:12:55,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:12:55,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034604931] [2021-11-04 10:12:55,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:12:55,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:12:55,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:12:55,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:12:55,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:12:55,812 INFO L87 Difference]: Start difference. First operand 101196 states and 123595 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:12:57,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:13:03,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:13:13,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:13:13,013 INFO L93 Difference]: Finished difference Result 105430 states and 128646 transitions. [2021-11-04 10:13:13,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:13:13,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 176 [2021-11-04 10:13:13,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:13:13,194 INFO L225 Difference]: With dead ends: 105430 [2021-11-04 10:13:13,194 INFO L226 Difference]: Without dead ends: 105420 [2021-11-04 10:13:13,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.11ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:13:13,222 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3484 mSDsluCounter, 3038 mSDsCounter, 0 mSdLazyCounter, 5802 mSolverCounterSat, 33 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12859.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3484 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.38ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 5802 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14676.35ms IncrementalHoareTripleChecker+Time [2021-11-04 10:13:13,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3484 Valid, 0 Invalid, 5837 Unknown, 0 Unchecked, 20.38ms Time], IncrementalHoareTripleChecker [33 Valid, 5802 Invalid, 2 Unknown, 0 Unchecked, 14676.35ms Time] [2021-11-04 10:13:13,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105420 states. [2021-11-04 10:13:15,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105420 to 102188. [2021-11-04 10:13:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102188 states, 102155 states have (on average 1.2205080514903823) internal successors, (124681), 102187 states have internal predecessors, (124681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:13:16,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102188 states to 102188 states and 124681 transitions. [2021-11-04 10:13:16,226 INFO L78 Accepts]: Start accepts. Automaton has 102188 states and 124681 transitions. Word has length 176 [2021-11-04 10:13:16,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:13:16,226 INFO L470 AbstractCegarLoop]: Abstraction has 102188 states and 124681 transitions. [2021-11-04 10:13:16,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:13:16,227 INFO L276 IsEmpty]: Start isEmpty. Operand 102188 states and 124681 transitions. [2021-11-04 10:13:16,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-04 10:13:16,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:13:16,229 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:13:16,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-04 10:13:16,229 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:13:16,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:13:16,230 INFO L85 PathProgramCache]: Analyzing trace with hash -884580861, now seen corresponding path program 1 times [2021-11-04 10:13:16,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:13:16,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072607005] [2021-11-04 10:13:16,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:13:16,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:13:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:13:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-04 10:13:16,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:13:16,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072607005] [2021-11-04 10:13:16,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072607005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:13:16,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:13:16,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 10:13:16,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945378415] [2021-11-04 10:13:16,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:13:16,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:13:16,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:13:16,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:13:16,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:13:16,491 INFO L87 Difference]: Start difference. First operand 102188 states and 124681 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:13:18,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:13:26,341 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:13:32,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:13:32,509 INFO L93 Difference]: Finished difference Result 107249 states and 130068 transitions. [2021-11-04 10:13:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:13:32,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 182 [2021-11-04 10:13:32,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:13:32,708 INFO L225 Difference]: With dead ends: 107249 [2021-11-04 10:13:32,708 INFO L226 Difference]: Without dead ends: 107239 [2021-11-04 10:13:32,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.20ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 10:13:32,744 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1460 mSDsluCounter, 3622 mSDsCounter, 0 mSdLazyCounter, 6243 mSolverCounterSat, 20 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11931.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.11ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 6243 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13583.28ms IncrementalHoareTripleChecker+Time [2021-11-04 10:13:32,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1460 Valid, 0 Invalid, 6265 Unknown, 0 Unchecked, 15.11ms Time], IncrementalHoareTripleChecker [20 Valid, 6243 Invalid, 2 Unknown, 0 Unchecked, 13583.28ms Time] [2021-11-04 10:13:32,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107239 states. [2021-11-04 10:13:35,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107239 to 102178. [2021-11-04 10:13:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102178 states, 102150 states have (on average 1.215330396475771) internal successors, (124146), 102177 states have internal predecessors, (124146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:13:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102178 states to 102178 states and 124146 transitions. [2021-11-04 10:13:35,728 INFO L78 Accepts]: Start accepts. Automaton has 102178 states and 124146 transitions. Word has length 182 [2021-11-04 10:13:35,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:13:35,729 INFO L470 AbstractCegarLoop]: Abstraction has 102178 states and 124146 transitions. [2021-11-04 10:13:35,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:13:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 102178 states and 124146 transitions. [2021-11-04 10:13:35,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-11-04 10:13:35,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:13:35,733 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 10:13:35,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-04 10:13:35,733 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 37 more)] === [2021-11-04 10:13:35,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:13:35,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1298065296, now seen corresponding path program 1 times [2021-11-04 10:13:35,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:13:35,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866436294] [2021-11-04 10:13:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:13:35,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:13:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:13:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-04 10:13:35,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:13:35,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866436294] [2021-11-04 10:13:35,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866436294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:13:35,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:13:35,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-04 10:13:35,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542551459] [2021-11-04 10:13:35,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:13:35,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-04 10:13:35,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:13:35,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-04 10:13:35,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-04 10:13:35,949 INFO L87 Difference]: Start difference. First operand 102178 states and 124146 transitions. Second operand has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 7 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:13:37,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:14:04,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []