./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.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 4442f8b76e61cf25cc45d29938cede5ddeca8e04e09b48cb8e4f2b249d1a9c57 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 04:00:34,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 04:00:34,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 04:00:34,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 04:00:34,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 04:00:34,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 04:00:34,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 04:00:34,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 04:00:34,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 04:00:34,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 04:00:34,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 04:00:34,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 04:00:34,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 04:00:34,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 04:00:34,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 04:00:34,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 04:00:34,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 04:00:34,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 04:00:34,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 04:00:34,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 04:00:34,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 04:00:34,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 04:00:34,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 04:00:34,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 04:00:34,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 04:00:34,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 04:00:34,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 04:00:34,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 04:00:34,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 04:00:34,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 04:00:34,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 04:00:34,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 04:00:34,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 04:00:34,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 04:00:34,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 04:00:34,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 04:00:34,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 04:00:34,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 04:00:34,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 04:00:34,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 04:00:34,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 04:00:34,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 04:00:34,957 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 04:00:34,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 04:00:34,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 04:00:34,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 04:00:34,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 04:00:34,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 04:00:34,959 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 04:00:34,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 04:00:34,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 04:00:34,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 04:00:34,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 04:00:34,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 04:00:34,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 04:00:34,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 04:00:34,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 04:00:34,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 04:00:34,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 04:00:34,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 04:00:34,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 04:00:34,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:00:34,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 04:00:34,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 04:00:34,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 04:00:34,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 04:00:34,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 04:00:34,963 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 04:00:34,963 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 04:00:34,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 04:00:34,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 04:00:34,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4442f8b76e61cf25cc45d29938cede5ddeca8e04e09b48cb8e4f2b249d1a9c57 [2021-11-04 04:00:35,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 04:00:35,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 04:00:35,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 04:00:35,198 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 04:00:35,199 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 04:00:35,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2021-11-04 04:00:35,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f1281e4f/f775a442ca1a456db70ed8e1350dd115/FLAGb1951e093 [2021-11-04 04:00:35,816 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 04:00:35,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2021-11-04 04:00:35,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f1281e4f/f775a442ca1a456db70ed8e1350dd115/FLAGb1951e093 [2021-11-04 04:00:36,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f1281e4f/f775a442ca1a456db70ed8e1350dd115 [2021-11-04 04:00:36,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 04:00:36,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 04:00:36,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 04:00:36,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 04:00:36,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 04:00:36,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:00:36" (1/1) ... [2021-11-04 04:00:36,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d9592d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:00:36, skipping insertion in model container [2021-11-04 04:00:36,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:00:36" (1/1) ... [2021-11-04 04:00:36,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 04:00:36,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 04:00:36,681 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i[167793,167806] [2021-11-04 04:00:37,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:00:37,134 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 04:00:37,222 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i[167793,167806] [2021-11-04 04:00:37,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 04:00:37,420 INFO L208 MainTranslator]: Completed translation [2021-11-04 04:00:37,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:00:37 WrapperNode [2021-11-04 04:00:37,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 04:00:37,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 04:00:37,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 04:00:37,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 04:00:37,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:00:37" (1/1) ... [2021-11-04 04:00:37,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:00:37" (1/1) ... [2021-11-04 04:00:37,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 04:00:37,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 04:00:37,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 04:00:37,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 04:00:37,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:00:37" (1/1) ... [2021-11-04 04:00:37,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:00:37" (1/1) ... [2021-11-04 04:00:37,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:00:37" (1/1) ... [2021-11-04 04:00:37,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:00:37" (1/1) ... [2021-11-04 04:00:38,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:00:37" (1/1) ... [2021-11-04 04:00:38,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:00:37" (1/1) ... [2021-11-04 04:00:38,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:00:37" (1/1) ... [2021-11-04 04:00:38,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 04:00:38,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 04:00:38,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 04:00:38,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 04:00:38,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:00:37" (1/1) ... [2021-11-04 04:00:38,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 04:00:38,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:00:38,312 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 04:00:38,330 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 04:00:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 04:00:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 04:00:38,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 04:00:38,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 04:00:38,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 04:00:38,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 04:00:38,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 04:00:38,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 04:00:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 04:00:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 04:00:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 04:00:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure can_fill_info [2021-11-04 04:00:38,345 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fill_info [2021-11-04 04:00:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 04:00:38,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 04:00:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 04:00:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 04:00:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 04:00:38,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 04:00:40,469 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 04:00:40,469 INFO L299 CfgBuilder]: Removed 1345 assume(true) statements. [2021-11-04 04:00:40,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:00:40 BoogieIcfgContainer [2021-11-04 04:00:40,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 04:00:40,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 04:00:40,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 04:00:40,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 04:00:40,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:00:36" (1/3) ... [2021-11-04 04:00:40,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0f61ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:00:40, skipping insertion in model container [2021-11-04 04:00:40,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:00:37" (2/3) ... [2021-11-04 04:00:40,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0f61ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:00:40, skipping insertion in model container [2021-11-04 04:00:40,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:00:40" (3/3) ... [2021-11-04 04:00:40,478 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--can--can-dev.ko-entry_point.cil.out.i [2021-11-04 04:00:40,481 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 04:00:40,481 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-04 04:00:40,516 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 04:00:40,521 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 04:00:40,521 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-04 04:00:40,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 1820 states, 1810 states have (on average 1.4850828729281769) internal successors, (2688), 1811 states have internal predecessors, (2688), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-04 04:00:40,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-04 04:00:40,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:00:40,553 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] [2021-11-04 04:00:40,554 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:00:40,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:00:40,557 INFO L85 PathProgramCache]: Analyzing trace with hash -636873605, now seen corresponding path program 1 times [2021-11-04 04:00:40,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:00:40,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101890427] [2021-11-04 04:00:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:00:40,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:00:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:00:40,865 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 04:00:40,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:00:40,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101890427] [2021-11-04 04:00:40,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101890427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:00:40,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:00:40,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:00:40,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136382098] [2021-11-04 04:00:40,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:00:40,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:00:40,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:00:40,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:00:40,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:00:40,890 INFO L87 Difference]: Start difference. First operand has 1820 states, 1810 states have (on average 1.4850828729281769) internal successors, (2688), 1811 states have internal predecessors, (2688), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 04:00:48,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:00:48,259 INFO L93 Difference]: Finished difference Result 5402 states and 8026 transitions. [2021-11-04 04:00:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:00:48,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-04 04:00:48,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:00:48,290 INFO L225 Difference]: With dead ends: 5402 [2021-11-04 04:00:48,290 INFO L226 Difference]: Without dead ends: 3553 [2021-11-04 04:00:48,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:00:48,304 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 2554 mSDsluCounter, 2597 mSDsCounter, 0 mSdLazyCounter, 5168 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6137.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2554 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 5171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.02ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7109.39ms IncrementalHoareTripleChecker+Time [2021-11-04 04:00:48,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2554 Valid, 60 Invalid, 5171 Unknown, 0 Unchecked, 36.02ms Time], IncrementalHoareTripleChecker [3 Valid, 5168 Invalid, 0 Unknown, 0 Unchecked, 7109.39ms Time] [2021-11-04 04:00:48,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2021-11-04 04:00:48,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3553. [2021-11-04 04:00:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3553 states, 3536 states have (on average 1.4369343891402715) internal successors, (5081), 3536 states have internal predecessors, (5081), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-04 04:00:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3553 states to 3553 states and 5105 transitions. [2021-11-04 04:00:48,550 INFO L78 Accepts]: Start accepts. Automaton has 3553 states and 5105 transitions. Word has length 20 [2021-11-04 04:00:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:00:48,550 INFO L470 AbstractCegarLoop]: Abstraction has 3553 states and 5105 transitions. [2021-11-04 04:00:48,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 04:00:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 3553 states and 5105 transitions. [2021-11-04 04:00:48,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-04 04:00:48,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:00:48,557 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] [2021-11-04 04:00:48,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 04:00:48,558 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:00:48,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:00:48,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1054608242, now seen corresponding path program 1 times [2021-11-04 04:00:48,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:00:48,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340670454] [2021-11-04 04:00:48,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:00:48,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:00:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:00:48,724 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 04:00:48,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:00:48,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340670454] [2021-11-04 04:00:48,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340670454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:00:48,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:00:48,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 04:00:48,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575644460] [2021-11-04 04:00:48,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:00:48,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 04:00:48,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:00:48,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 04:00:48,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:00:48,730 INFO L87 Difference]: Start difference. First operand 3553 states and 5105 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 04:01:00,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:01:02,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:01:02,534 INFO L93 Difference]: Finished difference Result 10639 states and 15294 transitions. [2021-11-04 04:01:02,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:01:02,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-11-04 04:01:02,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:01:02,556 INFO L225 Difference]: With dead ends: 10639 [2021-11-04 04:01:02,556 INFO L226 Difference]: Without dead ends: 7089 [2021-11-04 04:01:02,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.47ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 04:01:02,565 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 2536 mSDsluCounter, 7477 mSDsCounter, 0 mSdLazyCounter, 10284 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11895.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2536 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 10291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.16ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 10284 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13465.67ms IncrementalHoareTripleChecker+Time [2021-11-04 04:01:02,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2536 Valid, 66 Invalid, 10291 Unknown, 0 Unchecked, 25.16ms Time], IncrementalHoareTripleChecker [6 Valid, 10284 Invalid, 1 Unknown, 0 Unchecked, 13465.67ms Time] [2021-11-04 04:01:02,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7089 states. [2021-11-04 04:01:02,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7089 to 6969. [2021-11-04 04:01:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6969 states, 6936 states have (on average 1.4391580161476356) internal successors, (9982), 6936 states have internal predecessors, (9982), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-04 04:01:02,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6969 states to 6969 states and 10030 transitions. [2021-11-04 04:01:02,699 INFO L78 Accepts]: Start accepts. Automaton has 6969 states and 10030 transitions. Word has length 26 [2021-11-04 04:01:02,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:01:02,700 INFO L470 AbstractCegarLoop]: Abstraction has 6969 states and 10030 transitions. [2021-11-04 04:01:02,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 04:01:02,700 INFO L276 IsEmpty]: Start isEmpty. Operand 6969 states and 10030 transitions. [2021-11-04 04:01:02,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-04 04:01:02,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:01:02,708 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:01:02,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 04:01:02,709 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:01:02,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:01:02,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1900546352, now seen corresponding path program 1 times [2021-11-04 04:01:02,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:01:02,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954819727] [2021-11-04 04:01:02,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:01:02,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:01:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:01:02,863 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 04:01:02,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:01:02,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954819727] [2021-11-04 04:01:02,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954819727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:01:02,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:01:02,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 04:01:02,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625096826] [2021-11-04 04:01:02,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:01:02,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 04:01:02,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:01:02,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 04:01:02,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:01:02,866 INFO L87 Difference]: Start difference. First operand 6969 states and 10030 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:01:07,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:01:16,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:01:17,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:01:17,443 INFO L93 Difference]: Finished difference Result 26885 states and 38690 transitions. [2021-11-04 04:01:17,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:01:17,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-04 04:01:17,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:01:17,520 INFO L225 Difference]: With dead ends: 26885 [2021-11-04 04:01:17,521 INFO L226 Difference]: Without dead ends: 19925 [2021-11-04 04:01:17,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7.87ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:01:17,543 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 9529 mSDsluCounter, 4929 mSDsCounter, 0 mSdLazyCounter, 7607 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12591.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9529 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 7647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.71ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 7607 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14094.91ms IncrementalHoareTripleChecker+Time [2021-11-04 04:01:17,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9529 Valid, 36 Invalid, 7647 Unknown, 0 Unchecked, 23.71ms Time], IncrementalHoareTripleChecker [39 Valid, 7607 Invalid, 1 Unknown, 0 Unchecked, 14094.91ms Time] [2021-11-04 04:01:17,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19925 states. [2021-11-04 04:01:17,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19925 to 19901. [2021-11-04 04:01:17,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19901 states, 19804 states have (on average 1.4368814380933146) internal successors, (28456), 19804 states have internal predecessors, (28456), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-04 04:01:17,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19901 states to 19901 states and 28600 transitions. [2021-11-04 04:01:17,944 INFO L78 Accepts]: Start accepts. Automaton has 19901 states and 28600 transitions. Word has length 70 [2021-11-04 04:01:17,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:01:17,944 INFO L470 AbstractCegarLoop]: Abstraction has 19901 states and 28600 transitions. [2021-11-04 04:01:17,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:01:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 19901 states and 28600 transitions. [2021-11-04 04:01:17,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-04 04:01:17,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:01:17,956 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 04:01:17,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 04:01:17,957 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:01:17,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:01:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash -110241493, now seen corresponding path program 1 times [2021-11-04 04:01:17,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:01:17,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660721156] [2021-11-04 04:01:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:01:17,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:01:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:01:18,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:01:18,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:01:18,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660721156] [2021-11-04 04:01:18,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660721156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:01:18,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:01:18,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 04:01:18,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415963840] [2021-11-04 04:01:18,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:01:18,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:01:18,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:01:18,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:01:18,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:01:18,104 INFO L87 Difference]: Start difference. First operand 19901 states and 28600 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:01:28,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:01:37,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:01:42,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:01:42,780 INFO L93 Difference]: Finished difference Result 92348 states and 133357 transitions. [2021-11-04 04:01:42,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 04:01:42,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-04 04:01:42,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:01:42,943 INFO L225 Difference]: With dead ends: 92348 [2021-11-04 04:01:42,943 INFO L226 Difference]: Without dead ends: 72456 [2021-11-04 04:01:42,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.01ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:01:42,977 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 7154 mSDsluCounter, 7068 mSDsCounter, 0 mSdLazyCounter, 11683 mSolverCounterSat, 36 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21155.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7160 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 11721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.75ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 11683 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23460.14ms IncrementalHoareTripleChecker+Time [2021-11-04 04:01:42,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7160 Valid, 60 Invalid, 11721 Unknown, 0 Unchecked, 43.75ms Time], IncrementalHoareTripleChecker [36 Valid, 11683 Invalid, 2 Unknown, 0 Unchecked, 23460.14ms Time] [2021-11-04 04:01:43,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72456 states. [2021-11-04 04:01:43,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72456 to 20005. [2021-11-04 04:01:43,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20005 states, 19908 states have (on average 1.4345991561181435) internal successors, (28560), 19908 states have internal predecessors, (28560), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-04 04:01:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20005 states to 20005 states and 28704 transitions. [2021-11-04 04:01:43,645 INFO L78 Accepts]: Start accepts. Automaton has 20005 states and 28704 transitions. Word has length 71 [2021-11-04 04:01:43,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:01:43,646 INFO L470 AbstractCegarLoop]: Abstraction has 20005 states and 28704 transitions. [2021-11-04 04:01:43,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:01:43,646 INFO L276 IsEmpty]: Start isEmpty. Operand 20005 states and 28704 transitions. [2021-11-04 04:01:43,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-04 04:01:43,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:01:43,659 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:01:43,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 04:01:43,660 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:01:43,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:01:43,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1159529646, now seen corresponding path program 1 times [2021-11-04 04:01:43,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:01:43,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290069475] [2021-11-04 04:01:43,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:01:43,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:01:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:01:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-04 04:01:44,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:01:44,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290069475] [2021-11-04 04:01:44,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290069475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:01:44,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:01:44,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 04:01:44,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722536409] [2021-11-04 04:01:44,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:01:44,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 04:01:44,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:01:44,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 04:01:44,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 04:01:44,070 INFO L87 Difference]: Start difference. First operand 20005 states and 28704 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:01:45,175 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:01:53,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:02:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:02:05,942 INFO L93 Difference]: Finished difference Result 63103 states and 90616 transitions. [2021-11-04 04:02:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-04 04:02:05,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-04 04:02:05,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:02:06,055 INFO L225 Difference]: With dead ends: 63103 [2021-11-04 04:02:06,055 INFO L226 Difference]: Without dead ends: 43107 [2021-11-04 04:02:06,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 30.03ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-04 04:02:06,099 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 7506 mSDsluCounter, 7715 mSDsCounter, 0 mSdLazyCounter, 12667 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18723.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7506 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 12681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.05ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 12667 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20903.69ms IncrementalHoareTripleChecker+Time [2021-11-04 04:02:06,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7506 Valid, 75 Invalid, 12681 Unknown, 0 Unchecked, 27.05ms Time], IncrementalHoareTripleChecker [13 Valid, 12667 Invalid, 1 Unknown, 0 Unchecked, 20903.69ms Time] [2021-11-04 04:02:06,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43107 states. [2021-11-04 04:02:06,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43107 to 20023. [2021-11-04 04:02:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20023 states, 19926 states have (on average 1.434056007226739) internal successors, (28575), 19926 states have internal predecessors, (28575), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-04 04:02:06,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20023 states to 20023 states and 28719 transitions. [2021-11-04 04:02:06,830 INFO L78 Accepts]: Start accepts. Automaton has 20023 states and 28719 transitions. Word has length 74 [2021-11-04 04:02:06,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:02:06,832 INFO L470 AbstractCegarLoop]: Abstraction has 20023 states and 28719 transitions. [2021-11-04 04:02:06,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:02:06,832 INFO L276 IsEmpty]: Start isEmpty. Operand 20023 states and 28719 transitions. [2021-11-04 04:02:06,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-04 04:02:06,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:02:06,844 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:02:06,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 04:02:06,844 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:02:06,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:02:06,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1839588016, now seen corresponding path program 1 times [2021-11-04 04:02:06,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:02:06,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500419644] [2021-11-04 04:02:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:02:06,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:02:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:02:07,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:02:07,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:02:07,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500419644] [2021-11-04 04:02:07,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500419644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:02:07,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:02:07,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-04 04:02:07,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903842622] [2021-11-04 04:02:07,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:02:07,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-04 04:02:07,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:02:07,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-04 04:02:07,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-04 04:02:07,786 INFO L87 Difference]: Start difference. First operand 20023 states and 28719 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:02:24,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:02:26,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:02:27,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:02:36,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:02:42,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:02:44,287 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:02:46,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:02:48,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:02:50,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:02:52,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:02:54,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:03:04,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:03:07,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:03:31,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:03:33,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:03:35,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:03:45,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:04:03,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:04:14,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:04:28,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:04:38,011 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:04:49,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:04:49,797 INFO L93 Difference]: Finished difference Result 152346 states and 220898 transitions. [2021-11-04 04:04:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-04 04:04:49,805 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-04 04:04:49,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:04:50,209 INFO L225 Difference]: With dead ends: 152346 [2021-11-04 04:04:50,209 INFO L226 Difference]: Without dead ends: 132332 [2021-11-04 04:04:50,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 564.72ms TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2021-11-04 04:04:50,252 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 30357 mSDsluCounter, 63137 mSDsCounter, 0 mSdLazyCounter, 73150 mSolverCounterSat, 166 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137193.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30360 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 73331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 197.17ms SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 73150 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 156312.53ms IncrementalHoareTripleChecker+Time [2021-11-04 04:04:50,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30360 Valid, 306 Invalid, 73331 Unknown, 0 Unchecked, 197.17ms Time], IncrementalHoareTripleChecker [166 Valid, 73150 Invalid, 15 Unknown, 0 Unchecked, 156312.53ms Time] [2021-11-04 04:04:50,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132332 states. [2021-11-04 04:04:51,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132332 to 20231. [2021-11-04 04:04:51,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20231 states, 20134 states have (on average 1.4269891725439554) internal successors, (28731), 20134 states have internal predecessors, (28731), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-04 04:04:52,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20231 states to 20231 states and 28875 transitions. [2021-11-04 04:04:52,044 INFO L78 Accepts]: Start accepts. Automaton has 20231 states and 28875 transitions. Word has length 74 [2021-11-04 04:04:52,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:04:52,044 INFO L470 AbstractCegarLoop]: Abstraction has 20231 states and 28875 transitions. [2021-11-04 04:04:52,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:04:52,045 INFO L276 IsEmpty]: Start isEmpty. Operand 20231 states and 28875 transitions. [2021-11-04 04:04:52,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-04 04:04:52,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:04:52,073 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:04:52,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 04:04:52,074 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:04:52,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:04:52,075 INFO L85 PathProgramCache]: Analyzing trace with hash -849825764, now seen corresponding path program 1 times [2021-11-04 04:04:52,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:04:52,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050948941] [2021-11-04 04:04:52,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:04:52,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:04:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:04:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:04:52,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:04:52,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050948941] [2021-11-04 04:04:52,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050948941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:04:52,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:04:52,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:04:52,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907898577] [2021-11-04 04:04:52,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:04:52,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:04:52,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:04:52,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:04:52,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:04:52,160 INFO L87 Difference]: Start difference. First operand 20231 states and 28875 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 04:04:59,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:05:09,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:05:09,028 INFO L93 Difference]: Finished difference Result 48902 states and 69903 transitions. [2021-11-04 04:05:09,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:05:09,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-04 04:05:09,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:05:09,081 INFO L225 Difference]: With dead ends: 48902 [2021-11-04 04:05:09,081 INFO L226 Difference]: Without dead ends: 38631 [2021-11-04 04:05:09,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:05:09,100 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 2343 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 7267 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13286.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2346 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 7311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.33ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 7267 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14965.69ms IncrementalHoareTripleChecker+Time [2021-11-04 04:05:09,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2346 Valid, 33 Invalid, 7311 Unknown, 0 Unchecked, 10.33ms Time], IncrementalHoareTripleChecker [43 Valid, 7267 Invalid, 1 Unknown, 0 Unchecked, 14965.69ms Time] [2021-11-04 04:05:09,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38631 states. [2021-11-04 04:05:10,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38631 to 20387. [2021-11-04 04:05:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20387 states, 20290 states have (on average 1.4237062592410055) internal successors, (28887), 20290 states have internal predecessors, (28887), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-04 04:05:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20387 states to 20387 states and 29031 transitions. [2021-11-04 04:05:10,318 INFO L78 Accepts]: Start accepts. Automaton has 20387 states and 29031 transitions. Word has length 76 [2021-11-04 04:05:10,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:05:10,318 INFO L470 AbstractCegarLoop]: Abstraction has 20387 states and 29031 transitions. [2021-11-04 04:05:10,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 04:05:10,319 INFO L276 IsEmpty]: Start isEmpty. Operand 20387 states and 29031 transitions. [2021-11-04 04:05:10,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-04 04:05:10,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:05:10,336 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 04:05:10,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 04:05:10,338 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:05:10,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:05:10,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1669469059, now seen corresponding path program 1 times [2021-11-04 04:05:10,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:05:10,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748020020] [2021-11-04 04:05:10,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:05:10,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:05:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:05:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:05:10,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:05:10,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748020020] [2021-11-04 04:05:10,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748020020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:05:10,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:05:10,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 04:05:10,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599595765] [2021-11-04 04:05:10,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:05:10,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 04:05:10,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:05:10,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 04:05:10,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:05:10,452 INFO L87 Difference]: Start difference. First operand 20387 states and 29031 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:05:16,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:05:26,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:05:30,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:05:34,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:05:34,926 INFO L93 Difference]: Finished difference Result 49592 states and 70642 transitions. [2021-11-04 04:05:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 04:05:34,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-04 04:05:34,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:05:34,975 INFO L225 Difference]: With dead ends: 49592 [2021-11-04 04:05:34,976 INFO L226 Difference]: Without dead ends: 29214 [2021-11-04 04:05:34,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.92ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-04 04:05:34,998 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 4598 mSDsluCounter, 4869 mSDsCounter, 0 mSdLazyCounter, 9985 mSolverCounterSat, 29 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19921.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 10016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.16ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 9985 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22461.71ms IncrementalHoareTripleChecker+Time [2021-11-04 04:05:34,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4601 Valid, 39 Invalid, 10016 Unknown, 0 Unchecked, 19.16ms Time], IncrementalHoareTripleChecker [29 Valid, 9985 Invalid, 2 Unknown, 0 Unchecked, 22461.71ms Time] [2021-11-04 04:05:35,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29214 states. [2021-11-04 04:05:36,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29214 to 20153. [2021-11-04 04:05:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20153 states, 20056 states have (on average 1.4169824491424012) internal successors, (28419), 20056 states have internal predecessors, (28419), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-04 04:05:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20153 states to 20153 states and 28563 transitions. [2021-11-04 04:05:36,369 INFO L78 Accepts]: Start accepts. Automaton has 20153 states and 28563 transitions. Word has length 78 [2021-11-04 04:05:36,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:05:36,370 INFO L470 AbstractCegarLoop]: Abstraction has 20153 states and 28563 transitions. [2021-11-04 04:05:36,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:05:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 20153 states and 28563 transitions. [2021-11-04 04:05:36,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-04 04:05:36,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:05:36,382 INFO L514 BasicCegarLoop]: trace histogram [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 04:05:36,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 04:05:36,382 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:05:36,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:05:36,382 INFO L85 PathProgramCache]: Analyzing trace with hash 135443171, now seen corresponding path program 1 times [2021-11-04 04:05:36,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:05:36,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129072502] [2021-11-04 04:05:36,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:05:36,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:05:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:05:36,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:05:36,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:05:36,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129072502] [2021-11-04 04:05:36,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129072502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:05:36,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:05:36,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 04:05:36,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965151475] [2021-11-04 04:05:36,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:05:36,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 04:05:36,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:05:36,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 04:05:36,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:05:36,512 INFO L87 Difference]: Start difference. First operand 20153 states and 28563 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:05:43,068 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:05:47,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:05:47,867 INFO L93 Difference]: Finished difference Result 40349 states and 57220 transitions. [2021-11-04 04:05:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 04:05:47,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-04 04:05:47,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:05:47,897 INFO L225 Difference]: With dead ends: 40349 [2021-11-04 04:05:47,897 INFO L226 Difference]: Without dead ends: 20205 [2021-11-04 04:05:47,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 04:05:47,920 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 5133 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9100.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 5142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.25ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5133 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10192.83ms IncrementalHoareTripleChecker+Time [2021-11-04 04:05:47,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 5142 Unknown, 0 Unchecked, 7.25ms Time], IncrementalHoareTripleChecker [8 Valid, 5133 Invalid, 1 Unknown, 0 Unchecked, 10192.83ms Time] [2021-11-04 04:05:47,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20205 states. [2021-11-04 04:05:49,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20205 to 20205. [2021-11-04 04:05:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20205 states, 20108 states have (on average 1.415904117764074) internal successors, (28471), 20108 states have internal predecessors, (28471), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-04 04:05:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20205 states to 20205 states and 28615 transitions. [2021-11-04 04:05:49,171 INFO L78 Accepts]: Start accepts. Automaton has 20205 states and 28615 transitions. Word has length 79 [2021-11-04 04:05:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:05:49,172 INFO L470 AbstractCegarLoop]: Abstraction has 20205 states and 28615 transitions. [2021-11-04 04:05:49,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:05:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand 20205 states and 28615 transitions. [2021-11-04 04:05:49,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-04 04:05:49,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:05:49,183 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 04:05:49,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 04:05:49,183 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:05:49,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:05:49,184 INFO L85 PathProgramCache]: Analyzing trace with hash 67353562, now seen corresponding path program 1 times [2021-11-04 04:05:49,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:05:49,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957256041] [2021-11-04 04:05:49,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:05:49,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:05:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:05:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:05:49,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:05:49,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957256041] [2021-11-04 04:05:49,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957256041] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 04:05:49,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150791833] [2021-11-04 04:05:49,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:05:49,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:05:49,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:05:49,281 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 04:05:49,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 04:05:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:05:49,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 2180 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 04:05:49,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:05:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:05:49,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 04:05:50,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:05:50,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150791833] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 04:05:50,072 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 04:05:50,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-04 04:05:50,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219134201] [2021-11-04 04:05:50,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 04:05:50,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 04:05:50,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:05:50,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 04:05:50,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-04 04:05:50,073 INFO L87 Difference]: Start difference. First operand 20205 states and 28615 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:05:58,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:06:05,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:06:05,146 INFO L93 Difference]: Finished difference Result 40557 states and 57532 transitions. [2021-11-04 04:06:05,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 04:06:05,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-04 04:06:05,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:06:05,182 INFO L225 Difference]: With dead ends: 40557 [2021-11-04 04:06:05,182 INFO L226 Difference]: Without dead ends: 20361 [2021-11-04 04:06:05,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.17ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-04 04:06:05,211 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 5134 mSDsCounter, 0 mSdLazyCounter, 7715 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11755.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 7758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.54ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 7715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13848.09ms IncrementalHoareTripleChecker+Time [2021-11-04 04:06:05,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 7758 Unknown, 0 Unchecked, 13.54ms Time], IncrementalHoareTripleChecker [43 Valid, 7715 Invalid, 0 Unknown, 0 Unchecked, 13848.09ms Time] [2021-11-04 04:06:05,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20361 states. [2021-11-04 04:06:06,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20361 to 20361. [2021-11-04 04:06:06,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20361 states, 20264 states have (on average 1.4127023292538492) internal successors, (28627), 20264 states have internal predecessors, (28627), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-04 04:06:06,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20361 states to 20361 states and 28771 transitions. [2021-11-04 04:06:06,492 INFO L78 Accepts]: Start accepts. Automaton has 20361 states and 28771 transitions. Word has length 80 [2021-11-04 04:06:06,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:06:06,492 INFO L470 AbstractCegarLoop]: Abstraction has 20361 states and 28771 transitions. [2021-11-04 04:06:06,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:06:06,492 INFO L276 IsEmpty]: Start isEmpty. Operand 20361 states and 28771 transitions. [2021-11-04 04:06:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-04 04:06:06,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:06:06,516 INFO L514 BasicCegarLoop]: trace histogram [4, 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 04:06:06,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-04 04:06:06,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-04 04:06:06,735 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:06:06,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:06:06,736 INFO L85 PathProgramCache]: Analyzing trace with hash 8960163, now seen corresponding path program 2 times [2021-11-04 04:06:06,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:06:06,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492276336] [2021-11-04 04:06:06,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:06:06,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:06:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:06:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:06:06,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:06:06,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492276336] [2021-11-04 04:06:06,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492276336] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 04:06:06,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215312001] [2021-11-04 04:06:06,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 04:06:06,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:06:06,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:06:06,895 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 04:06:06,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 04:06:08,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 04:06:08,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 04:06:08,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 2198 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 04:06:08,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:06:08,292 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:06:08,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 04:06:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:06:08,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215312001] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 04:06:08,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 04:06:08,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-11-04 04:06:08,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341262837] [2021-11-04 04:06:08,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 04:06:08,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-04 04:06:08,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:06:08,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-04 04:06:08,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2021-11-04 04:06:08,599 INFO L87 Difference]: Start difference. First operand 20361 states and 28771 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 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 04:06:24,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:06:34,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:06:34,336 INFO L93 Difference]: Finished difference Result 41025 states and 58156 transitions. [2021-11-04 04:06:34,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-04 04:06:34,337 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 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 83 [2021-11-04 04:06:34,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:06:34,365 INFO L225 Difference]: With dead ends: 41025 [2021-11-04 04:06:34,365 INFO L226 Difference]: Without dead ends: 20673 [2021-11-04 04:06:34,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 238.87ms TimeCoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2021-11-04 04:06:34,392 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 12830 mSDsCounter, 0 mSdLazyCounter, 15424 mSolverCounterSat, 118 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20161.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 15543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.17ms SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 15424 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24267.72ms IncrementalHoareTripleChecker+Time [2021-11-04 04:06:34,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 15543 Unknown, 0 Unchecked, 37.17ms Time], IncrementalHoareTripleChecker [118 Valid, 15424 Invalid, 1 Unknown, 0 Unchecked, 24267.72ms Time] [2021-11-04 04:06:34,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20673 states. [2021-11-04 04:06:35,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20673 to 20673. [2021-11-04 04:06:35,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20673 states, 20576 states have (on average 1.406444401244168) internal successors, (28939), 20576 states have internal predecessors, (28939), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-04 04:06:35,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20673 states to 20673 states and 29083 transitions. [2021-11-04 04:06:35,522 INFO L78 Accepts]: Start accepts. Automaton has 20673 states and 29083 transitions. Word has length 83 [2021-11-04 04:06:35,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:06:35,523 INFO L470 AbstractCegarLoop]: Abstraction has 20673 states and 29083 transitions. [2021-11-04 04:06:35,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 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 04:06:35,523 INFO L276 IsEmpty]: Start isEmpty. Operand 20673 states and 29083 transitions. [2021-11-04 04:06:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-04 04:06:35,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:06:35,534 INFO L514 BasicCegarLoop]: trace histogram [10, 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 04:06:35,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 04:06:35,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-04 04:06:35,758 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:06:35,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:06:35,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1391846077, now seen corresponding path program 3 times [2021-11-04 04:06:35,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:06:35,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740676756] [2021-11-04 04:06:35,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:06:35,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:06:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:06:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:06:36,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:06:36,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740676756] [2021-11-04 04:06:36,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740676756] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 04:06:36,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152516368] [2021-11-04 04:06:36,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 04:06:36,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:06:36,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:06:36,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 04:06:36,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 04:06:40,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 04:06:40,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 04:06:40,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 2174 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-04 04:06:40,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:06:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 04:06:40,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 04:06:40,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152516368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:06:40,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 04:06:40,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13] total 25 [2021-11-04 04:06:40,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226077778] [2021-11-04 04:06:40,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:06:40,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-04 04:06:40,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:06:40,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-04 04:06:40,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-11-04 04:06:40,622 INFO L87 Difference]: Start difference. First operand 20673 states and 29083 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:07:07,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:07:09,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:07:11,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:07:20,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:07:22,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:07:24,098 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:07:26,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:07:28,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:07:30,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:07:31,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:07:33,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:07:35,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:07:39,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:07:46,237 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:08:14,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:09:21,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:09:23,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:09:25,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:11:06,743 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:11:32,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:11:34,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:11:39,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:11:48,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:11:48,937 INFO L93 Difference]: Finished difference Result 229584 states and 330202 transitions. [2021-11-04 04:11:48,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-04 04:11:48,938 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-04 04:11:48,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:11:49,643 INFO L225 Difference]: With dead ends: 229584 [2021-11-04 04:11:49,644 INFO L226 Difference]: Without dead ends: 208920 [2021-11-04 04:11:49,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 3222.32ms TimeCoverageRelationStatistics Valid=1072, Invalid=4478, Unknown=0, NotChecked=0, Total=5550 [2021-11-04 04:11:49,731 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 38362 mSDsluCounter, 114109 mSDsCounter, 0 mSdLazyCounter, 133321 mSolverCounterSat, 484 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 247646.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38365 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 133825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 483.42ms SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 133321 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 289144.09ms IncrementalHoareTripleChecker+Time [2021-11-04 04:11:49,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38365 Valid, 723 Invalid, 133825 Unknown, 0 Unchecked, 483.42ms Time], IncrementalHoareTripleChecker [484 Valid, 133321 Invalid, 20 Unknown, 0 Unchecked, 289144.09ms Time] [2021-11-04 04:11:49,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208920 states. [2021-11-04 04:11:52,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208920 to 20829. [2021-11-04 04:11:52,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20829 states, 20732 states have (on average 1.40338606984372) internal successors, (29095), 20732 states have internal predecessors, (29095), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-04 04:11:52,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20829 states to 20829 states and 29239 transitions. [2021-11-04 04:11:52,698 INFO L78 Accepts]: Start accepts. Automaton has 20829 states and 29239 transitions. Word has length 89 [2021-11-04 04:11:52,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:11:52,698 INFO L470 AbstractCegarLoop]: Abstraction has 20829 states and 29239 transitions. [2021-11-04 04:11:52,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:11:52,698 INFO L276 IsEmpty]: Start isEmpty. Operand 20829 states and 29239 transitions. [2021-11-04 04:11:52,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-04 04:11:52,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:11:52,708 INFO L514 BasicCegarLoop]: trace histogram [10, 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 04:11:52,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 04:11:52,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:11:52,924 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:11:52,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:11:52,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1786212863, now seen corresponding path program 1 times [2021-11-04 04:11:52,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:11:52,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545558335] [2021-11-04 04:11:52,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:11:52,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:11:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:11:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:11:53,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:11:53,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545558335] [2021-11-04 04:11:53,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545558335] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 04:11:53,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187524307] [2021-11-04 04:11:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:11:53,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:11:53,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 04:11:53,216 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 04:11:53,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 04:11:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:11:53,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 2240 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-04 04:11:53,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 04:11:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:11:54,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 04:11:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 04:11:55,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187524307] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 04:11:55,296 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 04:11:55,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2021-11-04 04:11:55,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649370256] [2021-11-04 04:11:55,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 04:11:55,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-04 04:11:55,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:11:55,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-04 04:11:55,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=680, Unknown=0, NotChecked=0, Total=1190 [2021-11-04 04:11:55,298 INFO L87 Difference]: Start difference. First operand 20829 states and 29239 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 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 04:12:10,048 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:12:12,056 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:12:18,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:12:24,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:12:37,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 04:12:37,212 INFO L93 Difference]: Finished difference Result 41961 states and 59092 transitions. [2021-11-04 04:12:37,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-04 04:12:37,218 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-04 04:12:37,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 04:12:37,252 INFO L225 Difference]: With dead ends: 41961 [2021-11-04 04:12:37,252 INFO L226 Difference]: Without dead ends: 21141 [2021-11-04 04:12:37,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1262.41ms TimeCoverageRelationStatistics Valid=510, Invalid=680, Unknown=0, NotChecked=0, Total=1190 [2021-11-04 04:12:37,278 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 10264 mSDsCounter, 0 mSdLazyCounter, 12917 mSolverCounterSat, 250 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32295.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 13171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.39ms SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 12917 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39587.42ms IncrementalHoareTripleChecker+Time [2021-11-04 04:12:37,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 13171 Unknown, 0 Unchecked, 40.39ms Time], IncrementalHoareTripleChecker [250 Valid, 12917 Invalid, 4 Unknown, 0 Unchecked, 39587.42ms Time] [2021-11-04 04:12:37,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21141 states. [2021-11-04 04:12:39,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21141 to 21141. [2021-11-04 04:12:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21141 states, 21044 states have (on average 1.397405436228854) internal successors, (29407), 21044 states have internal predecessors, (29407), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-04 04:12:39,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21141 states to 21141 states and 29551 transitions. [2021-11-04 04:12:39,079 INFO L78 Accepts]: Start accepts. Automaton has 21141 states and 29551 transitions. Word has length 89 [2021-11-04 04:12:39,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 04:12:39,079 INFO L470 AbstractCegarLoop]: Abstraction has 21141 states and 29551 transitions. [2021-11-04 04:12:39,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 35 states have internal predecessors, (113), 0 states have call successors, (0), 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 04:12:39,079 INFO L276 IsEmpty]: Start isEmpty. Operand 21141 states and 29551 transitions. [2021-11-04 04:12:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-04 04:12:39,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 04:12:39,092 INFO L514 BasicCegarLoop]: trace histogram [16, 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 04:12:39,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 04:12:39,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 04:12:39,308 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 04:12:39,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 04:12:39,308 INFO L85 PathProgramCache]: Analyzing trace with hash 475265697, now seen corresponding path program 2 times [2021-11-04 04:12:39,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 04:12:39,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160771448] [2021-11-04 04:12:39,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 04:12:39,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 04:12:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 04:12:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-04 04:12:40,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 04:12:40,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160771448] [2021-11-04 04:12:40,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160771448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 04:12:40,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 04:12:40,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-04 04:12:40,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582308048] [2021-11-04 04:12:40,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 04:12:40,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-04 04:12:40,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 04:12:40,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-04 04:12:40,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-11-04 04:12:40,240 INFO L87 Difference]: Start difference. First operand 21141 states and 29551 transitions. Second operand has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 15 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 04:12:42,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:12:46,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:12:48,682 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:12:50,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:12:51,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:12:54,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 04:13:55,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:13:57,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:13:59,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:14:01,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:14:11,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:14:34,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 04:14:56,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] Killed by 15