./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 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-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-4d01470 [2021-11-02 18:22:07,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 18:22:07,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 18:22:07,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 18:22:07,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 18:22:07,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 18:22:07,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 18:22:07,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 18:22:07,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 18:22:07,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 18:22:07,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 18:22:07,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 18:22:07,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 18:22:07,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 18:22:07,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 18:22:07,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 18:22:07,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 18:22:07,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 18:22:07,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 18:22:07,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 18:22:07,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 18:22:07,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 18:22:07,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 18:22:07,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 18:22:07,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 18:22:07,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 18:22:07,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 18:22:07,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 18:22:07,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 18:22:07,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 18:22:07,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 18:22:07,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 18:22:07,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 18:22:07,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 18:22:07,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 18:22:07,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 18:22:07,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 18:22:07,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 18:22:07,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 18:22:07,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 18:22:07,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 18:22:07,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 18:22:07,977 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 18:22:07,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 18:22:07,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 18:22:07,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 18:22:07,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 18:22:07,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 18:22:07,980 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 18:22:07,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 18:22:07,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 18:22:07,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 18:22:07,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 18:22:07,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 18:22:07,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 18:22:07,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 18:22:07,982 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 18:22:07,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 18:22:07,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 18:22:07,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 18:22:07,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 18:22:07,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:22:07,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 18:22:07,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 18:22:07,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 18:22:07,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 18:22:07,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 18:22:07,984 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 18:22:07,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 18:22:07,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 18:22:07,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 18:22:07,986 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4442f8b76e61cf25cc45d29938cede5ddeca8e04e09b48cb8e4f2b249d1a9c57 [2021-11-02 18:22:08,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 18:22:08,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 18:22:08,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 18:22:08,243 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 18:22:08,244 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 18:22:08,245 INFO L432 ainManager$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 [2021-11-02 18:22:08,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87136faa0/a818443c6e5847859fa3c636b73641e0/FLAGf5817a436 [2021-11-02 18:22:09,004 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 18:22:09,005 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 [2021-11-02 18:22:09,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87136faa0/a818443c6e5847859fa3c636b73641e0/FLAGf5817a436 [2021-11-02 18:22:09,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87136faa0/a818443c6e5847859fa3c636b73641e0 [2021-11-02 18:22:09,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 18:22:09,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 18:22:09,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 18:22:09,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 18:22:09,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 18:22:09,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:22:09" (1/1) ... [2021-11-02 18:22:09,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba46dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:22:09, skipping insertion in model container [2021-11-02 18:22:09,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:22:09" (1/1) ... [2021-11-02 18:22:09,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 18:22:09,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 18:22:10,172 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] [2021-11-02 18:22:10,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:22:10,821 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 18:22:10,934 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] [2021-11-02 18:22:11,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:22:11,143 INFO L208 MainTranslator]: Completed translation [2021-11-02 18:22:11,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:22:11 WrapperNode [2021-11-02 18:22:11,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 18:22:11,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 18:22:11,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 18:22:11,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 18:22:11,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:22:11" (1/1) ... [2021-11-02 18:22:11,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:22:11" (1/1) ... [2021-11-02 18:22:11,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 18:22:11,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 18:22:11,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 18:22:11,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 18:22:11,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:22:11" (1/1) ... [2021-11-02 18:22:11,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:22:11" (1/1) ... [2021-11-02 18:22:11,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:22:11" (1/1) ... [2021-11-02 18:22:11,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:22:11" (1/1) ... [2021-11-02 18:22:11,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:22:11" (1/1) ... [2021-11-02 18:22:11,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:22:11" (1/1) ... [2021-11-02 18:22:11,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:22:11" (1/1) ... [2021-11-02 18:22:12,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 18:22:12,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 18:22:12,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 18:22:12,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 18:22:12,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:22:11" (1/1) ... [2021-11-02 18:22:12,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:22:12,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:22:12,078 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) [2021-11-02 18:22:12,105 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 [2021-11-02 18:22:12,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 18:22:12,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 18:22:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 18:22:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 18:22:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 18:22:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 18:22:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 18:22:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 18:22:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 18:22:12,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 18:22:12,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 18:22:12,119 INFO L130 BoogieDeclarations]: Found specification of procedure can_fill_info [2021-11-02 18:22:12,119 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fill_info [2021-11-02 18:22:12,119 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 18:22:12,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 18:22:12,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 18:22:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 18:22:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 18:22:12,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 18:22:15,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 18:22:15,301 INFO L299 CfgBuilder]: Removed 1345 assume(true) statements. [2021-11-02 18:22:15,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:22:15 BoogieIcfgContainer [2021-11-02 18:22:15,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 18:22:15,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 18:22:15,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 18:22:15,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 18:22:15,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 06:22:09" (1/3) ... [2021-11-02 18:22:15,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a3a518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:22:15, skipping insertion in model container [2021-11-02 18:22:15,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:22:11" (2/3) ... [2021-11-02 18:22:15,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a3a518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:22:15, skipping insertion in model container [2021-11-02 18:22:15,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:22:15" (3/3) ... [2021-11-02 18:22:15,314 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 [2021-11-02 18:22:15,320 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 18:22:15,321 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 18:22:15,381 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 18:22:15,397 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 [2021-11-02 18:22:15,398 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 18:22:15,447 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) [2021-11-02 18:22:15,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-02 18:22:15,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:22:15,467 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] [2021-11-02 18:22:15,468 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:22:15,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:22:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash -636873605, now seen corresponding path program 1 times [2021-11-02 18:22:15,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:22:15,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042243135] [2021-11-02 18:22:15,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:22:15,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:22:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:22:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:22:15,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:22:15,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042243135] [2021-11-02 18:22:15,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042243135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:22:15,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:22:15,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:22:15,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129952370] [2021-11-02 18:22:15,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:22:15,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:22:15,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:22:15,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:22:16,003 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) [2021-11-02 18:22:24,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:22:24,646 INFO L93 Difference]: Finished difference Result 5402 states and 8026 transitions. [2021-11-02 18:22:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:22:24,649 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 [2021-11-02 18:22:24,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:22:24,677 INFO L225 Difference]: With dead ends: 5402 [2021-11-02 18:22:24,677 INFO L226 Difference]: Without dead ends: 3553 [2021-11-02 18:22:24,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:22:24,691 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 2554 mSDsluCounter, 2597 mSDsCounter, 0 mSdLazyCounter, 5168 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7116.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2554 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 5171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.66ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8319.85ms IncrementalHoareTripleChecker+Time [2021-11-02 18:22:24,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2554 Valid, 60 Invalid, 5171 Unknown, 0 Unchecked, 24.66ms Time], IncrementalHoareTripleChecker [3 Valid, 5168 Invalid, 0 Unknown, 0 Unchecked, 8319.85ms Time] [2021-11-02 18:22:24,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2021-11-02 18:22:24,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3553. [2021-11-02 18:22:24,866 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) [2021-11-02 18:22:24,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3553 states to 3553 states and 5105 transitions. [2021-11-02 18:22:24,887 INFO L78 Accepts]: Start accepts. Automaton has 3553 states and 5105 transitions. Word has length 20 [2021-11-02 18:22:24,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:22:24,888 INFO L470 AbstractCegarLoop]: Abstraction has 3553 states and 5105 transitions. [2021-11-02 18:22:24,888 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) [2021-11-02 18:22:24,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3553 states and 5105 transitions. [2021-11-02 18:22:24,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-02 18:22:24,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:22:24,893 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] [2021-11-02 18:22:24,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 18:22:24,894 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:22:24,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:22:24,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1054608242, now seen corresponding path program 1 times [2021-11-02 18:22:24,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:22:24,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294688156] [2021-11-02 18:22:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:22:24,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:22:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:22:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:22:25,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:22:25,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294688156] [2021-11-02 18:22:25,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294688156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:22:25,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:22:25,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:22:25,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106437403] [2021-11-02 18:22:25,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:22:25,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:22:25,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:22:25,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:22:25,144 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) [2021-11-02 18:22:37,171 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 [] [2021-11-02 18:22:38,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:22:38,862 INFO L93 Difference]: Finished difference Result 10639 states and 15294 transitions. [2021-11-02 18:22:38,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:22:38,863 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 [2021-11-02 18:22:38,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:22:38,903 INFO L225 Difference]: With dead ends: 10639 [2021-11-02 18:22:38,903 INFO L226 Difference]: Without dead ends: 7089 [2021-11-02 18:22:38,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.95ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:22:38,921 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 2536 mSDsluCounter, 7477 mSDsCounter, 0 mSdLazyCounter, 10284 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11903.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2536 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 10291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.53ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 10284 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13384.64ms IncrementalHoareTripleChecker+Time [2021-11-02 18:22:38,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2536 Valid, 66 Invalid, 10291 Unknown, 0 Unchecked, 21.53ms Time], IncrementalHoareTripleChecker [6 Valid, 10284 Invalid, 1 Unknown, 0 Unchecked, 13384.64ms Time] [2021-11-02 18:22:38,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7089 states. [2021-11-02 18:22:39,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7089 to 6969. [2021-11-02 18:22:39,116 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) [2021-11-02 18:22:39,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6969 states to 6969 states and 10030 transitions. [2021-11-02 18:22:39,140 INFO L78 Accepts]: Start accepts. Automaton has 6969 states and 10030 transitions. Word has length 26 [2021-11-02 18:22:39,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:22:39,142 INFO L470 AbstractCegarLoop]: Abstraction has 6969 states and 10030 transitions. [2021-11-02 18:22:39,144 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) [2021-11-02 18:22:39,144 INFO L276 IsEmpty]: Start isEmpty. Operand 6969 states and 10030 transitions. [2021-11-02 18:22:39,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 18:22:39,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:22:39,159 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] [2021-11-02 18:22:39,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 18:22:39,161 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:22:39,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:22:39,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1900546352, now seen corresponding path program 1 times [2021-11-02 18:22:39,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:22:39,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897602530] [2021-11-02 18:22:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:22:39,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:22:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:22:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:22:39,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:22:39,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897602530] [2021-11-02 18:22:39,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897602530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:22:39,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:22:39,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:22:39,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677788076] [2021-11-02 18:22:39,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:22:39,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:22:39,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:22:39,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:22:39,427 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) [2021-11-02 18:22:44,081 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 [] [2021-11-02 18:22:54,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:22:54,120 INFO L93 Difference]: Finished difference Result 26885 states and 38690 transitions. [2021-11-02 18:22:54,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:22:54,121 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 [2021-11-02 18:22:54,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:22:54,197 INFO L225 Difference]: With dead ends: 26885 [2021-11-02 18:22:54,198 INFO L226 Difference]: Without dead ends: 19925 [2021-11-02 18:22:54,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.27ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:22:54,218 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 9529 mSDsluCounter, 4929 mSDsCounter, 0 mSdLazyCounter, 7607 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12712.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9529 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 7647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.19ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 7607 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14255.25ms IncrementalHoareTripleChecker+Time [2021-11-02 18:22:54,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9529 Valid, 36 Invalid, 7647 Unknown, 0 Unchecked, 23.19ms Time], IncrementalHoareTripleChecker [39 Valid, 7607 Invalid, 1 Unknown, 0 Unchecked, 14255.25ms Time] [2021-11-02 18:22:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19925 states. [2021-11-02 18:22:54,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19925 to 19901. [2021-11-02 18:22:54,613 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) [2021-11-02 18:22:54,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19901 states to 19901 states and 28600 transitions. [2021-11-02 18:22:54,664 INFO L78 Accepts]: Start accepts. Automaton has 19901 states and 28600 transitions. Word has length 70 [2021-11-02 18:22:54,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:22:54,664 INFO L470 AbstractCegarLoop]: Abstraction has 19901 states and 28600 transitions. [2021-11-02 18:22:54,665 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) [2021-11-02 18:22:54,665 INFO L276 IsEmpty]: Start isEmpty. Operand 19901 states and 28600 transitions. [2021-11-02 18:22:54,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 18:22:54,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:22:54,678 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] [2021-11-02 18:22:54,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 18:22:54,679 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:22:54,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:22:54,680 INFO L85 PathProgramCache]: Analyzing trace with hash -110241493, now seen corresponding path program 1 times [2021-11-02 18:22:54,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:22:54,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135704694] [2021-11-02 18:22:54,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:22:54,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:22:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:22:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:22:54,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:22:54,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135704694] [2021-11-02 18:22:54,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135704694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:22:54,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:22:54,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:22:54,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355192326] [2021-11-02 18:22:54,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:22:54,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:22:54,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:22:54,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:22:54,895 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) [2021-11-02 18:23:00,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:23:04,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:23:07,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:23:12,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:23:20,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:23:20,057 INFO L93 Difference]: Finished difference Result 92144 states and 133021 transitions. [2021-11-02 18:23:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:23:20,057 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 [2021-11-02 18:23:20,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:23:20,259 INFO L225 Difference]: With dead ends: 92144 [2021-11-02 18:23:20,259 INFO L226 Difference]: Without dead ends: 72252 [2021-11-02 18:23:20,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.01ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:23:20,329 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 7065 mSDsluCounter, 7039 mSDsCounter, 0 mSdLazyCounter, 11624 mSolverCounterSat, 36 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21987.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7071 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 11664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.92ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 11624 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24148.34ms IncrementalHoareTripleChecker+Time [2021-11-02 18:23:20,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7071 Valid, 60 Invalid, 11664 Unknown, 0 Unchecked, 30.92ms Time], IncrementalHoareTripleChecker [36 Valid, 11624 Invalid, 4 Unknown, 0 Unchecked, 24148.34ms Time] [2021-11-02 18:23:20,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72252 states. [2021-11-02 18:23:21,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72252 to 20005. [2021-11-02 18:23:21,378 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) [2021-11-02 18:23:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20005 states to 20005 states and 28704 transitions. [2021-11-02 18:23:21,423 INFO L78 Accepts]: Start accepts. Automaton has 20005 states and 28704 transitions. Word has length 71 [2021-11-02 18:23:21,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:23:21,425 INFO L470 AbstractCegarLoop]: Abstraction has 20005 states and 28704 transitions. [2021-11-02 18:23:21,425 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) [2021-11-02 18:23:21,426 INFO L276 IsEmpty]: Start isEmpty. Operand 20005 states and 28704 transitions. [2021-11-02 18:23:21,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 18:23:21,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:23:21,443 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] [2021-11-02 18:23:21,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 18:23:21,443 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:23:21,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:23:21,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1159529646, now seen corresponding path program 1 times [2021-11-02 18:23:21,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:23:21,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85386231] [2021-11-02 18:23:21,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:23:21,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:23:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:23:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:23:21,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:23:21,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85386231] [2021-11-02 18:23:21,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85386231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:23:21,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:23:21,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:23:21,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380788716] [2021-11-02 18:23:21,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:23:21,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:23:21,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:23:21,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:23:21,897 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) [2021-11-02 18:23:27,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:23:29,396 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:23:34,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:23:42,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:23:44,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:23:44,444 INFO L93 Difference]: Finished difference Result 49728 states and 71359 transitions. [2021-11-02 18:23:44,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:23:44,444 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 [2021-11-02 18:23:44,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:23:44,507 INFO L225 Difference]: With dead ends: 49728 [2021-11-02 18:23:44,507 INFO L226 Difference]: Without dead ends: 29732 [2021-11-02 18:23:44,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.35ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:23:44,547 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 7532 mSDsluCounter, 5174 mSDsCounter, 0 mSdLazyCounter, 10147 mSolverCounterSat, 13 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20037.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7532 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 10164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.10ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 10147 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21702.71ms IncrementalHoareTripleChecker+Time [2021-11-02 18:23:44,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7532 Valid, 45 Invalid, 10164 Unknown, 0 Unchecked, 24.10ms Time], IncrementalHoareTripleChecker [13 Valid, 10147 Invalid, 4 Unknown, 0 Unchecked, 21702.71ms Time] [2021-11-02 18:23:44,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29732 states. [2021-11-02 18:23:45,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29732 to 20023. [2021-11-02 18:23:45,214 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) [2021-11-02 18:23:45,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20023 states to 20023 states and 28719 transitions. [2021-11-02 18:23:45,252 INFO L78 Accepts]: Start accepts. Automaton has 20023 states and 28719 transitions. Word has length 74 [2021-11-02 18:23:45,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:23:45,253 INFO L470 AbstractCegarLoop]: Abstraction has 20023 states and 28719 transitions. [2021-11-02 18:23:45,253 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) [2021-11-02 18:23:45,253 INFO L276 IsEmpty]: Start isEmpty. Operand 20023 states and 28719 transitions. [2021-11-02 18:23:45,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 18:23:45,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:23:45,267 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] [2021-11-02 18:23:45,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 18:23:45,268 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:23:45,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:23:45,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1839588016, now seen corresponding path program 1 times [2021-11-02 18:23:45,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:23:45,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960057990] [2021-11-02 18:23:45,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:23:45,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:23:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:23:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:23:46,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:23:46,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960057990] [2021-11-02 18:23:46,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960057990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:23:46,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:23:46,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 18:23:46,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273598430] [2021-11-02 18:23:46,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 18:23:46,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:23:46,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 18:23:46,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-02 18:23:46,431 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) [2021-11-02 18:24:02,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:24:04,245 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:24:06,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:24:18,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:24:21,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:24:23,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:24:25,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:24:27,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:24:31,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:25:18,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:25:21,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:25:23,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:25:25,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:25:27,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:25:29,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:25:31,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:25:33,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:25:36,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:25:43,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:25:48,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:25:54,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:25:56,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:26:00,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:26:03,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:26:18,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:26:20,581 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:26:24,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:26:26,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:26:28,174 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:26:30,179 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:26:32,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:26:39,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:26:41,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:27:00,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:27:11,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:27:13,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:27:40,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:27:50,726 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:28:01,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:28:05,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:28:07,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:28:09,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:28:13,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:28:15,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:28:17,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:28:22,491 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:28:24,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:28:31,465 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:28:39,155 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 [] [2021-11-02 18:28:40,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:28:40,904 INFO L93 Difference]: Finished difference Result 301542 states and 438762 transitions. [2021-11-02 18:28:40,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-02 18:28:40,908 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 [2021-11-02 18:28:40,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:28:41,626 INFO L225 Difference]: With dead ends: 301542 [2021-11-02 18:28:41,626 INFO L226 Difference]: Without dead ends: 281528 [2021-11-02 18:28:41,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 1476.45ms TimeCoverageRelationStatistics Valid=424, Invalid=1298, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 18:28:41,721 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 47054 mSDsluCounter, 71573 mSDsCounter, 0 mSdLazyCounter, 81552 mSolverCounterSat, 283 mSolverCounterUnsat, 39 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 240593.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47060 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 81874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 308.70ms SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 81552 IncrementalHoareTripleChecker+Invalid, 39 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 281435.77ms IncrementalHoareTripleChecker+Time [2021-11-02 18:28:41,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47060 Valid, 465 Invalid, 81874 Unknown, 0 Unchecked, 308.70ms Time], IncrementalHoareTripleChecker [283 Valid, 81552 Invalid, 39 Unknown, 0 Unchecked, 281435.77ms Time] [2021-11-02 18:28:42,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281528 states. [2021-11-02 18:28:45,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281528 to 20231. [2021-11-02 18:28:45,593 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) [2021-11-02 18:28:45,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20231 states to 20231 states and 28875 transitions. [2021-11-02 18:28:45,634 INFO L78 Accepts]: Start accepts. Automaton has 20231 states and 28875 transitions. Word has length 74 [2021-11-02 18:28:45,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:28:45,634 INFO L470 AbstractCegarLoop]: Abstraction has 20231 states and 28875 transitions. [2021-11-02 18:28:45,635 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) [2021-11-02 18:28:45,635 INFO L276 IsEmpty]: Start isEmpty. Operand 20231 states and 28875 transitions. [2021-11-02 18:28:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 18:28:45,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:28:45,652 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] [2021-11-02 18:28:45,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 18:28:45,652 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:28:45,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:28:45,654 INFO L85 PathProgramCache]: Analyzing trace with hash -849825764, now seen corresponding path program 1 times [2021-11-02 18:28:45,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:28:45,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670640234] [2021-11-02 18:28:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:28:45,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:28:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:28:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:28:45,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:28:45,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670640234] [2021-11-02 18:28:45,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670640234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:28:45,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:28:45,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:28:45,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743882673] [2021-11-02 18:28:45,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:28:45,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:28:45,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:28:45,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:28:45,770 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) [2021-11-02 18:28:52,807 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 [] [2021-11-02 18:29:02,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:29:02,896 INFO L93 Difference]: Finished difference Result 48902 states and 69903 transitions. [2021-11-02 18:29:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:29:02,897 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 [2021-11-02 18:29:02,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:29:02,951 INFO L225 Difference]: With dead ends: 48902 [2021-11-02 18:29:02,951 INFO L226 Difference]: Without dead ends: 38631 [2021-11-02 18:29:02,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.61ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:29:02,979 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 2343 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 7268 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12969.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2346 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 7312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.40ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 7268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14705.79ms IncrementalHoareTripleChecker+Time [2021-11-02 18:29:02,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2346 Valid, 33 Invalid, 7312 Unknown, 0 Unchecked, 9.40ms Time], IncrementalHoareTripleChecker [43 Valid, 7268 Invalid, 1 Unknown, 0 Unchecked, 14705.79ms Time] [2021-11-02 18:29:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38631 states. [2021-11-02 18:29:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38631 to 20387. [2021-11-02 18:29:04,532 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) [2021-11-02 18:29:04,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20387 states to 20387 states and 29031 transitions. [2021-11-02 18:29:04,571 INFO L78 Accepts]: Start accepts. Automaton has 20387 states and 29031 transitions. Word has length 76 [2021-11-02 18:29:04,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:29:04,571 INFO L470 AbstractCegarLoop]: Abstraction has 20387 states and 29031 transitions. [2021-11-02 18:29:04,571 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) [2021-11-02 18:29:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 20387 states and 29031 transitions. [2021-11-02 18:29:04,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 18:29:04,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:29:04,589 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] [2021-11-02 18:29:04,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 18:29:04,589 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:29:04,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:29:04,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1669469059, now seen corresponding path program 1 times [2021-11-02 18:29:04,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:29:04,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652735507] [2021-11-02 18:29:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:29:04,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:29:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:29:04,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:29:04,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:29:04,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652735507] [2021-11-02 18:29:04,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652735507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:29:04,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:29:04,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:29:04,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112977872] [2021-11-02 18:29:04,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:29:04,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:29:04,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:29:04,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:29:04,722 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) [2021-11-02 18:29:11,358 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 [] [2021-11-02 18:29:26,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:29:26,181 INFO L93 Difference]: Finished difference Result 56320 states and 80246 transitions. [2021-11-02 18:29:26,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 18:29:26,182 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 [2021-11-02 18:29:26,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:29:26,252 INFO L225 Difference]: With dead ends: 56320 [2021-11-02 18:29:26,252 INFO L226 Difference]: Without dead ends: 35942 [2021-11-02 18:29:26,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.20ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:29:26,286 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 4637 mSDsluCounter, 4740 mSDsCounter, 0 mSdLazyCounter, 9653 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16094.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4640 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 9683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.33ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 9653 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18639.75ms IncrementalHoareTripleChecker+Time [2021-11-02 18:29:26,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4640 Valid, 33 Invalid, 9683 Unknown, 0 Unchecked, 16.33ms Time], IncrementalHoareTripleChecker [29 Valid, 9653 Invalid, 1 Unknown, 0 Unchecked, 18639.75ms Time] [2021-11-02 18:29:26,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35942 states. [2021-11-02 18:29:28,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35942 to 26895. [2021-11-02 18:29:28,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26895 states, 26766 states have (on average 1.420122543525368) internal successors, (38011), 26766 states have internal predecessors, (38011), 96 states have call successors, (96), 32 states have call predecessors, (96), 32 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-02 18:29:28,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26895 states to 26895 states and 38203 transitions. [2021-11-02 18:29:28,310 INFO L78 Accepts]: Start accepts. Automaton has 26895 states and 38203 transitions. Word has length 78 [2021-11-02 18:29:28,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:29:28,310 INFO L470 AbstractCegarLoop]: Abstraction has 26895 states and 38203 transitions. [2021-11-02 18:29:28,310 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) [2021-11-02 18:29:28,310 INFO L276 IsEmpty]: Start isEmpty. Operand 26895 states and 38203 transitions. [2021-11-02 18:29:28,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 18:29:28,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:29:28,326 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] [2021-11-02 18:29:28,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 18:29:28,327 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:29:28,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:29:28,327 INFO L85 PathProgramCache]: Analyzing trace with hash 135443171, now seen corresponding path program 1 times [2021-11-02 18:29:28,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:29:28,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880381376] [2021-11-02 18:29:28,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:29:28,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:29:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:29:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:29:28,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:29:28,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880381376] [2021-11-02 18:29:28,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880381376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:29:28,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:29:28,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:29:28,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224913964] [2021-11-02 18:29:28,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:29:28,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:29:28,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:29:28,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:29:28,441 INFO L87 Difference]: Start difference. First operand 26895 states and 38203 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) [2021-11-02 18:29:34,521 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 [] [2021-11-02 18:29:39,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:29:39,930 INFO L93 Difference]: Finished difference Result 53851 states and 76536 transitions. [2021-11-02 18:29:39,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:29:39,930 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 [2021-11-02 18:29:39,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:29:39,966 INFO L225 Difference]: With dead ends: 53851 [2021-11-02 18:29:39,966 INFO L226 Difference]: Without dead ends: 26965 [2021-11-02 18:29:39,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:29:39,990 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 5133 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8432.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 5142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.41ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5133 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9519.40ms IncrementalHoareTripleChecker+Time [2021-11-02 18:29:39,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 5142 Unknown, 0 Unchecked, 6.41ms Time], IncrementalHoareTripleChecker [8 Valid, 5133 Invalid, 1 Unknown, 0 Unchecked, 9519.40ms Time] [2021-11-02 18:29:40,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26965 states. [2021-11-02 18:29:41,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26965 to 26965. [2021-11-02 18:29:41,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26965 states, 26836 states have (on average 1.4190266805783276) internal successors, (38081), 26836 states have internal predecessors, (38081), 96 states have call successors, (96), 32 states have call predecessors, (96), 32 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-02 18:29:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26965 states to 26965 states and 38273 transitions. [2021-11-02 18:29:41,912 INFO L78 Accepts]: Start accepts. Automaton has 26965 states and 38273 transitions. Word has length 79 [2021-11-02 18:29:41,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:29:41,913 INFO L470 AbstractCegarLoop]: Abstraction has 26965 states and 38273 transitions. [2021-11-02 18:29:41,913 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) [2021-11-02 18:29:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand 26965 states and 38273 transitions. [2021-11-02 18:29:41,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 18:29:41,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:29:41,928 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] [2021-11-02 18:29:41,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 18:29:41,929 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:29:41,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:29:41,929 INFO L85 PathProgramCache]: Analyzing trace with hash 67353562, now seen corresponding path program 1 times [2021-11-02 18:29:41,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:29:41,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534483742] [2021-11-02 18:29:41,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:29:41,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:29:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:29:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:29:42,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:29:42,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534483742] [2021-11-02 18:29:42,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534483742] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:29:42,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831212410] [2021-11-02 18:29:42,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:29:42,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:29:42,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:29:42,069 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) [2021-11-02 18:29:42,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 18:29:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:29:42,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 2180 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 18:29:42,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:29:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:29:42,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:29:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:29:42,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831212410] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:29:42,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 18:29:42,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-02 18:29:42,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607190047] [2021-11-02 18:29:42,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 18:29:42,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:29:42,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 18:29:42,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:29:42,965 INFO L87 Difference]: Start difference. First operand 26965 states and 38273 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) [2021-11-02 18:29:54,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:29:58,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:30:04,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:30:04,651 INFO L93 Difference]: Finished difference Result 54131 states and 76956 transitions. [2021-11-02 18:30:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 18:30:04,653 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 [2021-11-02 18:30:04,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:30:04,698 INFO L225 Difference]: With dead ends: 54131 [2021-11-02 18:30:04,698 INFO L226 Difference]: Without dead ends: 27175 [2021-11-02 18:30:04,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.95ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:30:04,724 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 10264 mSDsCounter, 0 mSdLazyCounter, 12834 mSolverCounterSat, 35 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16811.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 12871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.51ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 12834 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19526.87ms IncrementalHoareTripleChecker+Time [2021-11-02 18:30:04,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 12871 Unknown, 0 Unchecked, 20.51ms Time], IncrementalHoareTripleChecker [35 Valid, 12834 Invalid, 2 Unknown, 0 Unchecked, 19526.87ms Time] [2021-11-02 18:30:04,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27175 states. [2021-11-02 18:30:06,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27175 to 27175. [2021-11-02 18:30:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27175 states, 27046 states have (on average 1.4157731272646603) internal successors, (38291), 27046 states have internal predecessors, (38291), 96 states have call successors, (96), 32 states have call predecessors, (96), 32 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-02 18:30:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27175 states to 27175 states and 38483 transitions. [2021-11-02 18:30:06,626 INFO L78 Accepts]: Start accepts. Automaton has 27175 states and 38483 transitions. Word has length 80 [2021-11-02 18:30:06,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:30:06,627 INFO L470 AbstractCegarLoop]: Abstraction has 27175 states and 38483 transitions. [2021-11-02 18:30:06,627 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) [2021-11-02 18:30:06,627 INFO L276 IsEmpty]: Start isEmpty. Operand 27175 states and 38483 transitions. [2021-11-02 18:30:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 18:30:06,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:30:06,643 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] [2021-11-02 18:30:06,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 18:30:06,843 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 [2021-11-02 18:30:06,844 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:30:06,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:30:06,844 INFO L85 PathProgramCache]: Analyzing trace with hash 8960163, now seen corresponding path program 2 times [2021-11-02 18:30:06,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:30:06,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218343205] [2021-11-02 18:30:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:30:06,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:30:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:30:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:30:07,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:30:07,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218343205] [2021-11-02 18:30:07,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218343205] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:30:07,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879522422] [2021-11-02 18:30:07,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 18:30:07,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:30:07,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:30:07,064 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) [2021-11-02 18:30:07,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 18:30:08,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 18:30:08,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 18:30:08,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 2198 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 18:30:08,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:30:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:30:08,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:30:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:30:08,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879522422] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:30:08,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 18:30:08,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-11-02 18:30:08,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215563815] [2021-11-02 18:30:08,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 18:30:08,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:30:08,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 18:30:08,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2021-11-02 18:30:08,904 INFO L87 Difference]: Start difference. First operand 27175 states and 38483 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) [2021-11-02 18:30:19,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:30:21,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:30:26,961 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 [] [2021-11-02 18:30:37,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:30:37,692 INFO L93 Difference]: Finished difference Result 54761 states and 77796 transitions. [2021-11-02 18:30:37,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 18:30:37,694 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 [2021-11-02 18:30:37,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:30:37,740 INFO L225 Difference]: With dead ends: 54761 [2021-11-02 18:30:37,741 INFO L226 Difference]: Without dead ends: 27595 [2021-11-02 18:30:37,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 204.33ms TimeCoverageRelationStatistics Valid=126, Invalid=146, Unknown=0, NotChecked=0, Total=272 [2021-11-02 18:30:37,778 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 12827 mSDsCounter, 0 mSdLazyCounter, 15419 mSolverCounterSat, 106 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22807.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 15528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.47ms SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 15419 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26691.52ms IncrementalHoareTripleChecker+Time [2021-11-02 18:30:37,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 15528 Unknown, 0 Unchecked, 30.47ms Time], IncrementalHoareTripleChecker [106 Valid, 15419 Invalid, 3 Unknown, 0 Unchecked, 26691.52ms Time] [2021-11-02 18:30:37,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27595 states. [2021-11-02 18:30:39,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27595 to 27595. [2021-11-02 18:30:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27595 states, 27466 states have (on average 1.4094152770698318) internal successors, (38711), 27466 states have internal predecessors, (38711), 96 states have call successors, (96), 32 states have call predecessors, (96), 32 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-02 18:30:39,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27595 states to 27595 states and 38903 transitions. [2021-11-02 18:30:39,712 INFO L78 Accepts]: Start accepts. Automaton has 27595 states and 38903 transitions. Word has length 83 [2021-11-02 18:30:39,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:30:39,712 INFO L470 AbstractCegarLoop]: Abstraction has 27595 states and 38903 transitions. [2021-11-02 18:30:39,712 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) [2021-11-02 18:30:39,713 INFO L276 IsEmpty]: Start isEmpty. Operand 27595 states and 38903 transitions. [2021-11-02 18:30:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 18:30:39,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:30:39,728 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] [2021-11-02 18:30:39,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 18:30:39,928 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 [2021-11-02 18:30:39,929 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:30:39,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:30:39,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1391846077, now seen corresponding path program 3 times [2021-11-02 18:30:39,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:30:39,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386837181] [2021-11-02 18:30:39,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:30:39,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:30:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:30:40,299 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:30:40,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:30:40,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386837181] [2021-11-02 18:30:40,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386837181] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:30:40,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277349047] [2021-11-02 18:30:40,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 18:30:40,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:30:40,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:30:40,301 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) [2021-11-02 18:30:40,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 18:30:43,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-02 18:30:43,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 18:30:43,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2174 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-02 18:30:43,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:30:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-02 18:30:44,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 18:30:44,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277349047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:30:44,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 18:30:44,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13] total 25 [2021-11-02 18:30:44,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992539499] [2021-11-02 18:30:44,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 18:30:44,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:30:44,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 18:30:44,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-11-02 18:30:44,055 INFO L87 Difference]: Start difference. First operand 27595 states and 38903 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) [2021-11-02 18:31:16,305 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 [] [2021-11-02 18:31:24,969 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:31:26,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:31:29,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:31:31,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:31:33,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:31:35,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:31:36,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:31:46,269 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:31:53,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:32:43,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:32:46,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:32:48,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:32:50,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:32:51,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:33:03,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:33:30,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:33:32,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:33:34,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:33:35,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:33:38,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:33:41,184 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 [] [2021-11-02 18:34:24,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:34:24,910 INFO L93 Difference]: Finished difference Result 203940 states and 292117 transitions. [2021-11-02 18:34:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-02 18:34:24,910 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 [2021-11-02 18:34:24,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:34:25,404 INFO L225 Difference]: With dead ends: 203940 [2021-11-02 18:34:25,404 INFO L226 Difference]: Without dead ends: 176354 [2021-11-02 18:34:25,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 2353.93ms TimeCoverageRelationStatistics Valid=823, Invalid=3337, Unknown=0, NotChecked=0, Total=4160 [2021-11-02 18:34:25,463 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 28440 mSDsluCounter, 98066 mSDsCounter, 0 mSdLazyCounter, 117556 mSolverCounterSat, 379 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 178066.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28443 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 117950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 317.25ms SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 117556 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 202975.58ms IncrementalHoareTripleChecker+Time [2021-11-02 18:34:25,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28443 Valid, 618 Invalid, 117950 Unknown, 0 Unchecked, 317.25ms Time], IncrementalHoareTripleChecker [379 Valid, 117556 Invalid, 15 Unknown, 0 Unchecked, 202975.58ms Time] [2021-11-02 18:34:25,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176354 states. [2021-11-02 18:34:28,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176354 to 27805. [2021-11-02 18:34:28,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27805 states, 27676 states have (on average 1.4063087151322446) internal successors, (38921), 27676 states have internal predecessors, (38921), 96 states have call successors, (96), 32 states have call predecessors, (96), 32 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-02 18:34:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27805 states to 27805 states and 39113 transitions. [2021-11-02 18:34:28,853 INFO L78 Accepts]: Start accepts. Automaton has 27805 states and 39113 transitions. Word has length 89 [2021-11-02 18:34:28,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:34:28,853 INFO L470 AbstractCegarLoop]: Abstraction has 27805 states and 39113 transitions. [2021-11-02 18:34:28,853 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) [2021-11-02 18:34:28,853 INFO L276 IsEmpty]: Start isEmpty. Operand 27805 states and 39113 transitions. [2021-11-02 18:34:28,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 18:34:28,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:34:28,865 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] [2021-11-02 18:34:28,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-02 18:34:29,067 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 [2021-11-02 18:34:29,067 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:34:29,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:34:29,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1786212863, now seen corresponding path program 1 times [2021-11-02 18:34:29,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:34:29,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698431121] [2021-11-02 18:34:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:34:29,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:34:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:34:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:34:29,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:34:29,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698431121] [2021-11-02 18:34:29,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698431121] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:34:29,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447534944] [2021-11-02 18:34:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:34:29,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:34:29,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:34:29,321 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) [2021-11-02 18:34:29,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 18:34:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:34:30,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 2240 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 18:34:30,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:34:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:34:30,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:34:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 18:34:31,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447534944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:34:31,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 18:34:31,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2021-11-02 18:34:31,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948228906] [2021-11-02 18:34:31,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-02 18:34:31,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:34:31,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-02 18:34:31,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=680, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 18:34:31,336 INFO L87 Difference]: Start difference. First operand 27805 states and 39113 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) [2021-11-02 18:34:41,854 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 [] [2021-11-02 18:34:52,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:34:52,711 INFO L93 Difference]: Finished difference Result 56021 states and 79056 transitions. [2021-11-02 18:34:52,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 18:34:52,715 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 [2021-11-02 18:34:52,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:34:52,764 INFO L225 Difference]: With dead ends: 56021 [2021-11-02 18:34:52,765 INFO L226 Difference]: Without dead ends: 28225 [2021-11-02 18:34:52,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 950.54ms TimeCoverageRelationStatistics Valid=510, Invalid=680, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 18:34:52,787 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 5132 mSDsCounter, 0 mSdLazyCounter, 7807 mSolverCounterSat, 360 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15039.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 8168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.08ms SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 7807 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18192.00ms IncrementalHoareTripleChecker+Time [2021-11-02 18:34:52,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 8168 Unknown, 0 Unchecked, 14.08ms Time], IncrementalHoareTripleChecker [360 Valid, 7807 Invalid, 1 Unknown, 0 Unchecked, 18192.00ms Time] [2021-11-02 18:34:52,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28225 states. [2021-11-02 18:34:55,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28225 to 28225. [2021-11-02 18:34:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28225 states, 28096 states have (on average 1.4002349088838268) internal successors, (39341), 28096 states have internal predecessors, (39341), 96 states have call successors, (96), 32 states have call predecessors, (96), 32 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-02 18:34:55,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28225 states to 28225 states and 39533 transitions. [2021-11-02 18:34:55,518 INFO L78 Accepts]: Start accepts. Automaton has 28225 states and 39533 transitions. Word has length 89 [2021-11-02 18:34:55,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:34:55,518 INFO L470 AbstractCegarLoop]: Abstraction has 28225 states and 39533 transitions. [2021-11-02 18:34:55,518 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) [2021-11-02 18:34:55,518 INFO L276 IsEmpty]: Start isEmpty. Operand 28225 states and 39533 transitions. [2021-11-02 18:34:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-02 18:34:55,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:34:55,533 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] [2021-11-02 18:34:55,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 18:34:55,733 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 [2021-11-02 18:34:55,734 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 18:34:55,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:34:55,734 INFO L85 PathProgramCache]: Analyzing trace with hash 475265697, now seen corresponding path program 2 times [2021-11-02 18:34:55,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:34:55,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648224157] [2021-11-02 18:34:55,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:34:55,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:34:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:34:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-02 18:34:57,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:34:57,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648224157] [2021-11-02 18:34:57,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648224157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:34:57,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:34:57,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 18:34:57,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784296278] [2021-11-02 18:34:57,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 18:34:57,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:34:57,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 18:34:57,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-11-02 18:34:57,450 INFO L87 Difference]: Start difference. First operand 28225 states and 39533 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) [2021-11-02 18:34:59,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15