./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-data/shared_mem1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/heap-data/shared_mem1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 47cb7cab177485da5df0f1af4a3f61fd7eb970990493dd3ac764f888774cbf0f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:59:25,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:59:25,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:59:25,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:59:25,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:59:25,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:59:25,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:59:25,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:59:25,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:59:25,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:59:25,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:59:25,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:59:25,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:59:25,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:59:25,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:59:25,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:59:25,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:59:25,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:59:25,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:59:25,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:59:25,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:59:25,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:59:25,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:59:25,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:59:25,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:59:25,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:59:25,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:59:25,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:59:25,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:59:25,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:59:25,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:59:25,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:59:25,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:59:25,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:59:25,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:59:25,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:59:25,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:59:25,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:59:25,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:59:25,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:59:25,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:59:25,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 23:59:25,825 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:59:25,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:59:25,826 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:59:25,826 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:59:25,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:59:25,827 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:59:25,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:59:25,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:59:25,827 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:59:25,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:59:25,828 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:59:25,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 23:59:25,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:59:25,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:59:25,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:59:25,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:59:25,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:59:25,829 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:59:25,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:59:25,830 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:59:25,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:59:25,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:59:25,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:59:25,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:59:25,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:59:25,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:59:25,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:59:25,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:59:25,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 23:59:25,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 23:59:25,831 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:59:25,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:59:25,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:59:25,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:59:25,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47cb7cab177485da5df0f1af4a3f61fd7eb970990493dd3ac764f888774cbf0f [2021-12-15 23:59:26,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:59:26,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:59:26,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:59:26,028 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:59:26,028 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:59:26,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-data/shared_mem1.i [2021-12-15 23:59:26,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdcdcafb4/31fa91d57b1a45928053b1a329c34d9f/FLAGefa0245bf [2021-12-15 23:59:26,444 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:59:26,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/shared_mem1.i [2021-12-15 23:59:26,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdcdcafb4/31fa91d57b1a45928053b1a329c34d9f/FLAGefa0245bf [2021-12-15 23:59:26,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdcdcafb4/31fa91d57b1a45928053b1a329c34d9f [2021-12-15 23:59:26,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:59:26,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:59:26,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:59:26,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:59:26,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:59:26,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:59:26" (1/1) ... [2021-12-15 23:59:26,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ebfb913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:26, skipping insertion in model container [2021-12-15 23:59:26,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:59:26" (1/1) ... [2021-12-15 23:59:26,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:59:26,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:59:26,709 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/shared_mem1.i[23879,23892] [2021-12-15 23:59:26,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:59:26,721 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:59:26,764 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/shared_mem1.i[23879,23892] [2021-12-15 23:59:26,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:59:26,785 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:59:26,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:26 WrapperNode [2021-12-15 23:59:26,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:59:26,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:59:26,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:59:26,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:59:26,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:26" (1/1) ... [2021-12-15 23:59:26,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:26" (1/1) ... [2021-12-15 23:59:26,830 INFO L137 Inliner]: procedures = 121, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2021-12-15 23:59:26,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:59:26,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:59:26,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:59:26,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:59:26,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:26" (1/1) ... [2021-12-15 23:59:26,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:26" (1/1) ... [2021-12-15 23:59:26,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:26" (1/1) ... [2021-12-15 23:59:26,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:26" (1/1) ... [2021-12-15 23:59:26,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:26" (1/1) ... [2021-12-15 23:59:26,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:26" (1/1) ... [2021-12-15 23:59:26,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:26" (1/1) ... [2021-12-15 23:59:26,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:59:26,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:59:26,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:59:26,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:59:26,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:26" (1/1) ... [2021-12-15 23:59:26,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:59:26,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:59:26,895 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) [2021-12-15 23:59:26,912 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 [2021-12-15 23:59:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 23:59:26,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 23:59:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 23:59:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:59:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 23:59:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 23:59:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 23:59:26,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:59:26,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:59:27,014 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:59:27,015 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:59:27,227 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:59:27,231 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:59:27,231 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 23:59:27,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:59:27 BoogieIcfgContainer [2021-12-15 23:59:27,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:59:27,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:59:27,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:59:27,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:59:27,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:59:26" (1/3) ... [2021-12-15 23:59:27,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6300d6da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:59:27, skipping insertion in model container [2021-12-15 23:59:27,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:59:26" (2/3) ... [2021-12-15 23:59:27,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6300d6da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:59:27, skipping insertion in model container [2021-12-15 23:59:27,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:59:27" (3/3) ... [2021-12-15 23:59:27,267 INFO L111 eAbstractionObserver]: Analyzing ICFG shared_mem1.i [2021-12-15 23:59:27,271 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:59:27,271 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:59:27,325 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:59:27,329 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 [2021-12-15 23:59:27,329 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:59:27,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 23:59:27,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:59:27,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:59:27,382 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:59:27,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:59:27,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1650103796, now seen corresponding path program 1 times [2021-12-15 23:59:27,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:59:27,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536105231] [2021-12-15 23:59:27,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:59:27,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:59:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:59:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:59:27,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:59:27,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536105231] [2021-12-15 23:59:27,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536105231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:59:27,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:59:27,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 23:59:27,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265226167] [2021-12-15 23:59:27,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:59:27,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 23:59:27,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:59:27,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 23:59:27,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:59:27,665 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:27,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:59:27,674 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2021-12-15 23:59:27,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 23:59:27,676 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-12-15 23:59:27,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:59:27,680 INFO L225 Difference]: With dead ends: 27 [2021-12-15 23:59:27,681 INFO L226 Difference]: Without dead ends: 13 [2021-12-15 23:59:27,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:59:27,685 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:59:27,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:59:27,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-15 23:59:27,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-15 23:59:27,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-12-15 23:59:27,704 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 10 [2021-12-15 23:59:27,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:59:27,704 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-12-15 23:59:27,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2021-12-15 23:59:27,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 23:59:27,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:59:27,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:59:27,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 23:59:27,706 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:59:27,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:59:27,709 INFO L85 PathProgramCache]: Analyzing trace with hash -812668617, now seen corresponding path program 1 times [2021-12-15 23:59:27,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:59:27,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418496160] [2021-12-15 23:59:27,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:59:27,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:59:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:59:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:59:28,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:59:28,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418496160] [2021-12-15 23:59:28,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418496160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:59:28,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:59:28,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 23:59:28,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542113417] [2021-12-15 23:59:28,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:59:28,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 23:59:28,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:59:28,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 23:59:28,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-15 23:59:28,089 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:28,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:59:28,287 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2021-12-15 23:59:28,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 23:59:28,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-12-15 23:59:28,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:59:28,290 INFO L225 Difference]: With dead ends: 29 [2021-12-15 23:59:28,290 INFO L226 Difference]: Without dead ends: 27 [2021-12-15 23:59:28,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-15 23:59:28,294 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:59:28,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 38 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 23:59:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-15 23:59:28,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-12-15 23:59:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2021-12-15 23:59:28,305 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 11 [2021-12-15 23:59:28,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:59:28,307 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2021-12-15 23:59:28,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:28,309 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2021-12-15 23:59:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 23:59:28,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:59:28,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:59:28,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 23:59:28,310 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:59:28,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:59:28,311 INFO L85 PathProgramCache]: Analyzing trace with hash -812666695, now seen corresponding path program 1 times [2021-12-15 23:59:28,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:59:28,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588398620] [2021-12-15 23:59:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:59:28,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:59:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:59:28,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:59:28,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:59:28,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588398620] [2021-12-15 23:59:28,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588398620] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:59:28,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:59:28,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 23:59:28,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338939017] [2021-12-15 23:59:28,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:59:28,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 23:59:28,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:59:28,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 23:59:28,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-15 23:59:28,500 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:59:28,584 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2021-12-15 23:59:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 23:59:28,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-12-15 23:59:28,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:59:28,585 INFO L225 Difference]: With dead ends: 31 [2021-12-15 23:59:28,585 INFO L226 Difference]: Without dead ends: 24 [2021-12-15 23:59:28,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-15 23:59:28,586 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:59:28,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 38 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 23:59:28,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-15 23:59:28,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-12-15 23:59:28,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:28,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2021-12-15 23:59:28,589 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 11 [2021-12-15 23:59:28,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:59:28,589 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2021-12-15 23:59:28,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:28,589 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2021-12-15 23:59:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-15 23:59:28,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:59:28,590 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:59:28,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 23:59:28,590 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:59:28,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:59:28,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1760681901, now seen corresponding path program 1 times [2021-12-15 23:59:28,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:59:28,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709241437] [2021-12-15 23:59:28,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:59:28,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:59:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:59:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:59:28,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:59:28,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709241437] [2021-12-15 23:59:28,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709241437] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:59:28,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820753883] [2021-12-15 23:59:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:59:28,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:59:28,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:59:28,792 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) [2021-12-15 23:59:28,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 23:59:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:59:28,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-15 23:59:28,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:59:28,978 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 23:59:28,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-15 23:59:29,012 INFO L354 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2021-12-15 23:59:29,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 71 [2021-12-15 23:59:29,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-15 23:59:29,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 42 [2021-12-15 23:59:29,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2021-12-15 23:59:29,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-12-15 23:59:29,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2021-12-15 23:59:29,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-12-15 23:59:29,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-12-15 23:59:29,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2021-12-15 23:59:29,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-15 23:59:29,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-12-15 23:59:29,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-12-15 23:59:29,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,295 INFO L354 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-12-15 23:59:29,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 38 [2021-12-15 23:59:29,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:29,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-15 23:59:29,308 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 23:59:29,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-15 23:59:29,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 47 [2021-12-15 23:59:29,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:59:29,449 INFO L354 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2021-12-15 23:59:29,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 42 [2021-12-15 23:59:29,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-15 23:59:29,558 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:59:29,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2021-12-15 23:59:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:59:29,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:59:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:59:29,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820753883] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:59:29,926 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:59:29,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2021-12-15 23:59:29,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678115855] [2021-12-15 23:59:29,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:59:29,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-15 23:59:29,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:59:29,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-15 23:59:29,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-12-15 23:59:29,928 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:30,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:59:30,179 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2021-12-15 23:59:30,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 23:59:30,179 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 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 14 [2021-12-15 23:59:30,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:59:30,180 INFO L225 Difference]: With dead ends: 47 [2021-12-15 23:59:30,180 INFO L226 Difference]: Without dead ends: 45 [2021-12-15 23:59:30,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2021-12-15 23:59:30,181 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 62 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:59:30,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 92 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 70 Unchecked, 0.0s Time] [2021-12-15 23:59:30,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-15 23:59:30,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2021-12-15 23:59:30,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:30,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2021-12-15 23:59:30,186 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 14 [2021-12-15 23:59:30,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:59:30,186 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2021-12-15 23:59:30,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:30,186 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2021-12-15 23:59:30,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-15 23:59:30,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:59:30,187 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:59:30,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 23:59:30,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:59:30,397 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:59:30,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:59:30,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1760679979, now seen corresponding path program 1 times [2021-12-15 23:59:30,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:59:30,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304298108] [2021-12-15 23:59:30,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:59:30,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:59:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:59:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:59:30,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:59:30,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304298108] [2021-12-15 23:59:30,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304298108] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:59:30,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399386609] [2021-12-15 23:59:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:59:30,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:59:30,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:59:30,563 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) [2021-12-15 23:59:30,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 23:59:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:59:30,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-15 23:59:30,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:59:30,664 INFO L354 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2021-12-15 23:59:30,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 74 [2021-12-15 23:59:30,691 INFO L354 Elim1Store]: treesize reduction 46, result has 37.0 percent of original size [2021-12-15 23:59:30,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 92 [2021-12-15 23:59:30,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:30,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:30,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:30,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-15 23:59:30,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:30,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:30,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:30,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 116 [2021-12-15 23:59:30,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:30,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:30,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:30,888 INFO L354 Elim1Store]: treesize reduction 66, result has 22.4 percent of original size [2021-12-15 23:59:30,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 102 [2021-12-15 23:59:30,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:30,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:30,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:30,954 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:59:30,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 95 [2021-12-15 23:59:31,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:31,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:31,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:31,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-12-15 23:59:31,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2021-12-15 23:59:31,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:31,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:31,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:31,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2021-12-15 23:59:31,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2021-12-15 23:59:31,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:31,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:31,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:31,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-12-15 23:59:31,187 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 23:59:31,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-15 23:59:31,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:31,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:31,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:31,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2021-12-15 23:59:31,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:31,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-12-15 23:59:31,304 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-15 23:59:31,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-15 23:59:31,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-12-15 23:59:31,441 INFO L354 Elim1Store]: treesize reduction 40, result has 64.0 percent of original size [2021-12-15 23:59:31,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 93 [2021-12-15 23:59:31,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 64 [2021-12-15 23:59:31,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-12-15 23:59:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:59:31,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:59:31,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 41 [2021-12-15 23:59:31,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-12-15 23:59:33,659 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_61 Int) (v_ArrVal_401 Int) (v_arrayElimCell_60 Int)) (let ((.cse0 (select |c_#memory_int| v_arrayElimCell_60))) (or (< 90 (select (select (store |c_#memory_int| v_arrayElimCell_60 (store .cse0 v_arrayElimCell_61 v_ArrVal_401)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (< v_ArrVal_401 (+ (select .cse0 v_arrayElimCell_61) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) is different from false [2021-12-15 23:59:35,711 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_61 Int) (v_ArrVal_401 Int) (v_arrayElimCell_60 Int)) (let ((.cse0 (select |c_#memory_int| v_arrayElimCell_60))) (or (< v_ArrVal_401 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (select .cse0 v_arrayElimCell_61))) (< 90 (select (select (store |c_#memory_int| v_arrayElimCell_60 (store .cse0 v_arrayElimCell_61 v_ArrVal_401)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))))) is different from false [2021-12-15 23:59:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-15 23:59:35,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399386609] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:59:35,849 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:59:35,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2021-12-15 23:59:35,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260526701] [2021-12-15 23:59:35,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:59:35,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-15 23:59:35,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:59:35,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-15 23:59:35,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=129, Unknown=7, NotChecked=50, Total=240 [2021-12-15 23:59:35,850 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:37,916 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (.cse0 (select |c_#valid| |c_ULTIMATE.start_main_~head~0#1.base|)) (.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (.cse4 (select |c_#valid| |c_ULTIMATE.start_main_~m~0#1.base|)) (.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (and (<= |c_ULTIMATE.start_main_~head~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|) (not (= |c_ULTIMATE.start_main_~m~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|)) (= 1 .cse0) (= 0 |c_ULTIMATE.start_main_~head~0#1.offset|) (or (not (= |c_ULTIMATE.start_main_~m~0#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) (= .cse1 1)) (not (= |c_ULTIMATE.start_main_~head~0#1.base| |c_ULTIMATE.start_main_~m~0#1.base|)) (<= 100 .cse2) (= .cse2 100) (forall ((v_arrayElimCell_61 Int) (v_ArrVal_401 Int) (v_arrayElimCell_60 Int)) (let ((.cse3 (select |c_#memory_int| v_arrayElimCell_60))) (or (< v_ArrVal_401 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (select .cse3 v_arrayElimCell_61))) (< 90 (select (select (store |c_#memory_int| v_arrayElimCell_60 (store .cse3 v_arrayElimCell_61 v_ArrVal_401)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))))) (= .cse0 1) (not (= |c_ULTIMATE.start_main_~head~0#1.offset| (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (<= 1 .cse1) (= 0 |c_ULTIMATE.start_main_~list~0#1.offset|) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~m~0#1.base|)) (= .cse4 1) (= 1 .cse4) (= .cse5 1) (<= 1 .cse5))) is different from false [2021-12-15 23:59:39,970 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (.cse0 (select |c_#valid| |c_ULTIMATE.start_main_~head~0#1.base|)) (.cse3 (select |c_#valid| |c_ULTIMATE.start_main_~m~0#1.base|)) (.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (and (<= |c_ULTIMATE.start_main_~head~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|) (not (= |c_ULTIMATE.start_main_~m~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|)) (= 1 .cse0) (= 0 |c_ULTIMATE.start_main_~head~0#1.offset|) (not (= |c_ULTIMATE.start_main_~head~0#1.base| |c_ULTIMATE.start_main_~m~0#1.base|)) (<= 100 .cse1) (= .cse1 100) (forall ((v_arrayElimCell_61 Int) (v_ArrVal_401 Int) (v_arrayElimCell_60 Int)) (let ((.cse2 (select |c_#memory_int| v_arrayElimCell_60))) (or (< v_ArrVal_401 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (select .cse2 v_arrayElimCell_61))) (< 90 (select (select (store |c_#memory_int| v_arrayElimCell_60 (store .cse2 v_arrayElimCell_61 v_ArrVal_401)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))))) (= .cse0 1) (not (= |c_ULTIMATE.start_main_~head~0#1.offset| (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (= .cse3 1) (= 1 .cse3) (= .cse4 1) (<= 1 .cse4))) is different from false [2021-12-15 23:59:42,018 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (and (not (= |c_ULTIMATE.start_main_~m~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|)) (= 0 |c_ULTIMATE.start_main_~head~0#1.offset|) (not (= |c_ULTIMATE.start_main_~head~0#1.base| |c_ULTIMATE.start_main_~m~0#1.base|)) (= .cse0 1) (<= 100 .cse1) (= .cse1 100) (forall ((v_arrayElimCell_61 Int) (v_ArrVal_401 Int) (v_arrayElimCell_60 Int)) (let ((.cse2 (select |c_#memory_int| v_arrayElimCell_60))) (or (< v_ArrVal_401 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (select .cse2 v_arrayElimCell_61))) (< 90 (select (select (store |c_#memory_int| v_arrayElimCell_60 (store .cse2 v_arrayElimCell_61 v_ArrVal_401)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))))) (<= 1 .cse0))) is different from false [2021-12-15 23:59:42,962 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))) (and (<= 1 .cse0) (forall ((v_arrayElimCell_61 Int) (v_ArrVal_401 Int) (v_arrayElimCell_60 Int)) (let ((.cse1 (select |c_#memory_int| v_arrayElimCell_60))) (or (< 90 (select (select (store |c_#memory_int| v_arrayElimCell_60 (store .cse1 v_arrayElimCell_61 v_ArrVal_401)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (< v_ArrVal_401 (+ (select .cse1 v_arrayElimCell_61) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) (= 0 |c_ULTIMATE.start_main_~list~0#1.offset|) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~m~0#1.base|)) (or (not (= |c_ULTIMATE.start_main_~m~0#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) (= .cse0 1)) (<= 100 .cse2) (= .cse2 100))) is different from false [2021-12-15 23:59:43,844 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))) (and (<= 1 .cse0) (forall ((v_arrayElimCell_61 Int) (v_ArrVal_401 Int) (v_arrayElimCell_60 Int)) (let ((.cse1 (select |c_#memory_int| v_arrayElimCell_60))) (or (< 90 (select (select (store |c_#memory_int| v_arrayElimCell_60 (store .cse1 v_arrayElimCell_61 v_ArrVal_401)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (< v_ArrVal_401 (+ (select .cse1 v_arrayElimCell_61) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse3))) (or (not (= |c_ULTIMATE.start_main_~m~0#1.base| .cse2)) (and (= |c_ULTIMATE.start_main_#t~mem9#1| (select (select |c_#memory_int| .cse2) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse3))) (= .cse0 1))))) (= 0 |c_ULTIMATE.start_main_~list~0#1.offset|) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~m~0#1.base|)) (<= 100 .cse4) (= .cse4 100))) is different from false [2021-12-15 23:59:43,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:59:43,875 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2021-12-15 23:59:43,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-15 23:59:43,875 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 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 14 [2021-12-15 23:59:43,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:59:43,876 INFO L225 Difference]: With dead ends: 70 [2021-12-15 23:59:43,876 INFO L226 Difference]: Without dead ends: 63 [2021-12-15 23:59:43,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=134, Invalid=302, Unknown=12, NotChecked=308, Total=756 [2021-12-15 23:59:43,876 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 48 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:59:43,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 79 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 60 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2021-12-15 23:59:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-15 23:59:43,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 42. [2021-12-15 23:59:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 41 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:43,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2021-12-15 23:59:43,882 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 14 [2021-12-15 23:59:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:59:43,882 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2021-12-15 23:59:43,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:43,882 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2021-12-15 23:59:43,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-15 23:59:43,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:59:43,883 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:59:43,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 23:59:44,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:59:44,083 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:59:44,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:59:44,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1758834859, now seen corresponding path program 1 times [2021-12-15 23:59:44,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:59:44,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320661134] [2021-12-15 23:59:44,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:59:44,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:59:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:59:44,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:59:44,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:59:44,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320661134] [2021-12-15 23:59:44,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320661134] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:59:44,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575025092] [2021-12-15 23:59:44,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:59:44,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:59:44,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:59:44,213 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) [2021-12-15 23:59:44,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 23:59:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:59:44,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-15 23:59:44,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:59:44,310 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 23:59:44,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-15 23:59:44,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-15 23:59:44,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-15 23:59:44,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:44,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:44,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 23:59:44,366 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-15 23:59:44,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-15 23:59:44,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 31 [2021-12-15 23:59:44,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-12-15 23:59:44,423 INFO L354 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2021-12-15 23:59:44,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 30 [2021-12-15 23:59:44,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 23:59:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:59:44,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:59:44,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 35 [2021-12-15 23:59:44,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2021-12-15 23:59:44,527 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_536 (Array Int Int)) (v_ArrVal_538 (Array Int Int)) (|v_ULTIMATE.start_main_~n~0#1.base_7| Int)) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_7|))) (<= (select (select (store (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_7| v_ArrVal_536) |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_538) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 100))) is different from false [2021-12-15 23:59:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-15 23:59:44,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575025092] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:59:44,558 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:59:44,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 13 [2021-12-15 23:59:44,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915333333] [2021-12-15 23:59:44,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:59:44,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-15 23:59:44,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:59:44,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-15 23:59:44,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=96, Unknown=1, NotChecked=20, Total=156 [2021-12-15 23:59:44,559 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:44,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:59:44,706 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2021-12-15 23:59:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 23:59:44,706 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 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 14 [2021-12-15 23:59:44,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:59:44,707 INFO L225 Difference]: With dead ends: 60 [2021-12-15 23:59:44,707 INFO L226 Difference]: Without dead ends: 53 [2021-12-15 23:59:44,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=167, Unknown=1, NotChecked=28, Total=272 [2021-12-15 23:59:44,708 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 23:59:44,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 42 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 48 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2021-12-15 23:59:44,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-15 23:59:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34. [2021-12-15 23:59:44,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:44,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2021-12-15 23:59:44,712 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 14 [2021-12-15 23:59:44,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:59:44,712 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2021-12-15 23:59:44,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:44,713 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2021-12-15 23:59:44,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-15 23:59:44,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:59:44,713 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:59:44,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 23:59:44,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:59:44,914 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:59:44,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:59:44,914 INFO L85 PathProgramCache]: Analyzing trace with hash 187961508, now seen corresponding path program 1 times [2021-12-15 23:59:44,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:59:44,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695786446] [2021-12-15 23:59:44,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:59:44,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:59:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:59:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:59:45,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:59:45,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695786446] [2021-12-15 23:59:45,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695786446] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:59:45,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448051002] [2021-12-15 23:59:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:59:45,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:59:45,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:59:45,276 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) [2021-12-15 23:59:45,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 23:59:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:59:45,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-15 23:59:45,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:59:45,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:45,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-12-15 23:59:45,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:45,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:45,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2021-12-15 23:59:45,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:45,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2021-12-15 23:59:45,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:45,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:45,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:45,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-15 23:59:45,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:45,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:45,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-12-15 23:59:45,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-12-15 23:59:45,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-12-15 23:59:45,613 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 23:59:45,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 102 [2021-12-15 23:59:45,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 38 [2021-12-15 23:59:45,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 54 [2021-12-15 23:59:45,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-12-15 23:59:45,809 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 23:59:45,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-12-15 23:59:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:59:45,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:59:45,931 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_636 (Array Int Int)) (v_ArrVal_639 (Array Int Int)) (v_ArrVal_638 Int)) (let ((.cse8 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse8))) (let ((.cse0 (select |c_#memory_int| .cse2)) (.cse1 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse8))) (or (< v_ArrVal_638 (+ (select .cse0 .cse1) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (<= 101 (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_636)) (.cse3 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_639)) (.cse7 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) .cse7)) (.cse5 (+ (select (select .cse6 |c_ULTIMATE.start_main_~list~0#1.base|) .cse7) 4))) (select (select (store |c_#memory_int| .cse2 (store .cse0 .cse1 v_ArrVal_638)) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5)))))))))) is different from false [2021-12-15 23:59:45,958 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_636 (Array Int Int)) (v_ArrVal_639 (Array Int Int)) (v_ArrVal_638 Int)) (let ((.cse8 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) .cse8))) (let ((.cse0 (select |c_#memory_int| .cse2)) (.cse1 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base|) .cse8))) (or (< v_ArrVal_638 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (select .cse0 .cse1))) (<= 101 (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_636)) (.cse3 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_639)) (.cse7 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~head~0#1.base|) .cse7)) (.cse5 (+ (select (select .cse6 |c_ULTIMATE.start_main_~head~0#1.base|) .cse7) 4))) (select (select (store |c_#memory_int| .cse2 (store .cse0 .cse1 v_ArrVal_638)) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5)))))))))) is different from false [2021-12-15 23:59:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-15 23:59:46,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448051002] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:59:46,005 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:59:46,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 7] total 19 [2021-12-15 23:59:46,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323234476] [2021-12-15 23:59:46,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:59:46,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-15 23:59:46,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:59:46,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-15 23:59:46,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=231, Unknown=2, NotChecked=62, Total=342 [2021-12-15 23:59:46,007 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:46,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:59:46,809 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2021-12-15 23:59:46,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 23:59:46,810 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 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 16 [2021-12-15 23:59:46,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:59:46,810 INFO L225 Difference]: With dead ends: 62 [2021-12-15 23:59:46,810 INFO L226 Difference]: Without dead ends: 34 [2021-12-15 23:59:46,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=132, Invalid=380, Unknown=2, NotChecked=86, Total=600 [2021-12-15 23:59:46,811 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 45 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 23:59:46,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 105 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 119 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2021-12-15 23:59:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-15 23:59:46,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-12-15 23:59:46,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:46,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-12-15 23:59:46,814 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 16 [2021-12-15 23:59:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:59:46,814 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-12-15 23:59:46,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:46,815 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-12-15 23:59:46,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-15 23:59:46,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:59:46,815 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:59:46,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-15 23:59:47,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:59:47,016 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:59:47,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:59:47,016 INFO L85 PathProgramCache]: Analyzing trace with hash -319487049, now seen corresponding path program 2 times [2021-12-15 23:59:47,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:59:47,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154900090] [2021-12-15 23:59:47,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:59:47,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:59:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:59:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-15 23:59:47,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:59:47,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154900090] [2021-12-15 23:59:47,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154900090] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:59:47,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730839377] [2021-12-15 23:59:47,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 23:59:47,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:59:47,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:59:47,196 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 23:59:47,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 23:59:47,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 23:59:47,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 23:59:47,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-15 23:59:47,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:59:47,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-12-15 23:59:47,353 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 23:59:47,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-15 23:59:47,388 INFO L354 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2021-12-15 23:59:47,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 71 [2021-12-15 23:59:47,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-15 23:59:47,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 42 [2021-12-15 23:59:47,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2021-12-15 23:59:47,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-12-15 23:59:47,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2021-12-15 23:59:47,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-12-15 23:59:47,655 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-15 23:59:47,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-12-15 23:59:47,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-15 23:59:47,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-15 23:59:47,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-12-15 23:59:47,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-12-15 23:59:47,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-15 23:59:47,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-15 23:59:47,708 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-15 23:59:47,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-15 23:59:47,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-15 23:59:47,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,842 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-15 23:59:47,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2021-12-15 23:59:47,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-12-15 23:59:47,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-15 23:59:47,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-15 23:59:47,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:47,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-12-15 23:59:47,894 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 23:59:47,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-15 23:59:47,909 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-15 23:59:47,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 23:59:48,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 47 [2021-12-15 23:59:48,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 23:59:48,052 INFO L354 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2021-12-15 23:59:48,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 42 [2021-12-15 23:59:48,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-15 23:59:48,164 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 23:59:48,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2021-12-15 23:59:48,183 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:59:48,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:59:48,579 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-12-15 23:59:48,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 774 treesize of output 670 [2021-12-15 23:59:49,101 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_14 (Array Int Int)) (v_ArrVal_859 Int) (v_ArrVal_870 (Array Int Int)) (v_ArrVal_857 Int) (v_ArrVal_871 (Array Int Int)) (v_ArrVal_855 Int) (v_ArrVal_854 Int) (v_ArrVal_863 (Array Int Int)) (v_ArrVal_865 Int) (v_ArrVal_862 (Array Int Int)) (v_ArrVal_842 Int) (v_ArrVal_843 (Array Int Int)) (|v_ULTIMATE.start_main_~n~0#1.offset_11| Int) (|v_ULTIMATE.start_main_~n~0#1.base_12| Int) (v_ArrVal_864 (Array Int Int)) (v_ArrVal_873 Int) (|v_ULTIMATE.start_main_~n~0#1.base_11| Int) (v_ArrVal_860 Int) (v_ArrVal_844 (Array Int Int)) (v_ArrVal_839 (Array Int Int))) (let ((.cse8 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) (.cse6 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (let ((.cse1 (let ((.cse10 (store (let ((.cse11 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_12| v_ArrVal_844))) (store .cse11 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse11 |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_857))) |v_ULTIMATE.start_main_~n~0#1.base_11| v_ArrVal_870))) (store .cse10 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse10 |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_865)))) (.cse2 (select (select (let ((.cse9 (store (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_12| v_ArrVal_839) |c_ULTIMATE.start_main_~list~0#1.base| (store (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_12| v_ArrVal_843) |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_854)))) (store (store .cse9 |v_ULTIMATE.start_main_~n~0#1.base_11| v_ArrVal_862) |c_ULTIMATE.start_main_~list~0#1.base| (store (select (store .cse9 |v_ULTIMATE.start_main_~n~0#1.base_11| v_ArrVal_863) |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_860))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse8))) (let ((.cse3 (select .cse1 .cse2)) (.cse4 (select (select (let ((.cse5 (let ((.cse7 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_12| v_arrayElimArr_14))) (store .cse7 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_842))))) (store (store .cse5 |v_ULTIMATE.start_main_~n~0#1.base_11| v_ArrVal_871) |c_ULTIMATE.start_main_~list~0#1.base| (store (select (store .cse5 |v_ULTIMATE.start_main_~n~0#1.base_11| v_ArrVal_864) |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_859))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse8))) (let ((.cse0 (select .cse3 .cse4))) (or (not (= (select v_arrayElimArr_14 (+ |v_ULTIMATE.start_main_~n~0#1.offset_11| 8)) |c_ULTIMATE.start_main_~head~0#1.offset|)) (< (+ .cse0 (select (select .cse1 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) v_ArrVal_873) (< 100 .cse0) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_12|))) (not (= 0 (select (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_12| v_ArrVal_855) |v_ULTIMATE.start_main_~n~0#1.base_11|))) (<= (select (select (store .cse1 .cse2 (store .cse3 .cse4 v_ArrVal_873)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 109) (not (= (select v_arrayElimArr_14 (+ |v_ULTIMATE.start_main_~n~0#1.offset_11| 4)) |c_ULTIMATE.start_main_~m~0#1.offset|)))))))) is different from false [2021-12-15 23:59:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-12-15 23:59:50,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730839377] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 23:59:50,296 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 23:59:50,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-12-15 23:59:50,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391625515] [2021-12-15 23:59:50,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 23:59:50,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-15 23:59:50,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:59:50,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-15 23:59:50,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=280, Unknown=2, NotChecked=34, Total=380 [2021-12-15 23:59:50,297 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:50,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:59:50,592 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2021-12-15 23:59:50,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-15 23:59:50,592 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-15 23:59:50,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:59:50,592 INFO L225 Difference]: With dead ends: 37 [2021-12-15 23:59:50,592 INFO L226 Difference]: Without dead ends: 35 [2021-12-15 23:59:50,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=406, Unknown=2, NotChecked=42, Total=552 [2021-12-15 23:59:50,593 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:59:50,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 62 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2021-12-15 23:59:50,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-15 23:59:50,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2021-12-15 23:59:50,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:50,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-12-15 23:59:50,596 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 17 [2021-12-15 23:59:50,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:59:50,596 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-12-15 23:59:50,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:59:50,596 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2021-12-15 23:59:50,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-15 23:59:50,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:59:50,597 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:59:50,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-15 23:59:50,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:59:50,803 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:59:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:59:50,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2098222328, now seen corresponding path program 1 times [2021-12-15 23:59:50,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:59:50,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303199554] [2021-12-15 23:59:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:59:50,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:59:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:59:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:59:51,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:59:51,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303199554] [2021-12-15 23:59:51,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303199554] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 23:59:51,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517418393] [2021-12-15 23:59:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:59:51,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 23:59:51,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:59:51,148 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 23:59:51,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 23:59:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:59:51,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-15 23:59:51,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:59:51,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-12-15 23:59:51,302 INFO L354 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2021-12-15 23:59:51,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 74 [2021-12-15 23:59:51,342 INFO L354 Elim1Store]: treesize reduction 46, result has 37.0 percent of original size [2021-12-15 23:59:51,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 92 [2021-12-15 23:59:51,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-15 23:59:51,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2021-12-15 23:59:51,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 103 [2021-12-15 23:59:51,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 22 [2021-12-15 23:59:51,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-15 23:59:51,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-12-15 23:59:51,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 37 [2021-12-15 23:59:51,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 22 [2021-12-15 23:59:51,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-12-15 23:59:51,566 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-15 23:59:51,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-15 23:59:51,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-15 23:59:51,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-15 23:59:51,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,710 INFO L354 Elim1Store]: treesize reduction 28, result has 15.2 percent of original size [2021-12-15 23:59:51,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 31 [2021-12-15 23:59:51,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-15 23:59:51,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-15 23:59:51,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-12-15 23:59:51,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 23:59:51,741 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-15 23:59:51,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-15 23:59:51,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 33 [2021-12-15 23:59:51,875 INFO L354 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2021-12-15 23:59:51,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 39 [2021-12-15 23:59:51,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-12-15 23:59:51,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 31 [2021-12-15 23:59:51,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-12-15 23:59:52,040 INFO L354 Elim1Store]: treesize reduction 51, result has 46.3 percent of original size [2021-12-15 23:59:52,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 62 [2021-12-15 23:59:52,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-15 23:59:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:59:52,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 23:59:52,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 35 [2021-12-15 23:59:52,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2021-12-15 23:59:54,153 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_160 Int) (v_arrayElimCell_161 Int) (v_ArrVal_1045 Int)) (let ((.cse0 (select |c_#memory_int| v_arrayElimCell_160))) (or (<= (select (select (store |c_#memory_int| v_arrayElimCell_160 (store .cse0 v_arrayElimCell_161 v_ArrVal_1045)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 109) (< 100 (select .cse0 v_arrayElimCell_161))))) is different from false [2021-12-16 00:00:02,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-16 00:00:02,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517418393] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 00:00:02,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 00:00:02,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 11] total 26 [2021-12-16 00:00:02,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491350522] [2021-12-16 00:00:02,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 00:00:02,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-16 00:00:02,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:00:02,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-16 00:00:02,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=500, Unknown=2, NotChecked=46, Total=650 [2021-12-16 00:00:02,542 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 00:00:04,762 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~m~0#1.offset| 0) (forall ((v_arrayElimCell_160 Int) (v_arrayElimCell_161 Int) (v_ArrVal_1045 Int)) (let ((.cse0 (select |c_#memory_int| v_arrayElimCell_160))) (or (<= (select (select (store |c_#memory_int| v_arrayElimCell_160 (store .cse0 v_arrayElimCell_161 v_ArrVal_1045)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 109) (< 100 (select .cse0 v_arrayElimCell_161))))) (exists ((|ULTIMATE.start_main_~list~0#1.base| Int)) (let ((.cse1 (select (select |c_#memory_int| |ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))) (and (= .cse1 1) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (+ .cse1 100)))))) is different from false [2021-12-16 00:00:06,775 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|)) (.cse6 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (let ((.cse1 (= |c_ULTIMATE.start_main_~m~0#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse6))) (.cse0 (<= (select .cse4 |c_ULTIMATE.start_main_~m~0#1.offset|) 109)) (.cse2 (not |c_ULTIMATE.start_main_#t~short19#1|))) (and (or .cse0 .cse1 .cse2) |c_ULTIMATE.start_main_#t~short19#1| (or (not .cse1) (let ((.cse5 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse6))) (let ((.cse3 (= |c_ULTIMATE.start_main_~m~0#1.offset| .cse5))) (and (or (not .cse3) (<= 101 (select .cse4 .cse5))) (or .cse0 .cse3 .cse2))))) (or (forall ((v_arrayElimCell_160 Int) (v_arrayElimCell_161 Int) (v_ArrVal_1045 Int)) (let ((.cse7 (select |c_#memory_int| v_arrayElimCell_160))) (or (<= (select (select (store |c_#memory_int| v_arrayElimCell_160 (store .cse7 v_arrayElimCell_161 v_ArrVal_1045)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 109) (< 100 (select .cse7 v_arrayElimCell_161))))) .cse2)))) is different from false