./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/res2o.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/array-fpi/res2o.c -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 c8f420e2027982da4f1bb18a6387f830c2a1e2f24637d0451d3246965ba37a6d --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:13:16,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:13:16,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:13:16,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:13:16,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:13:16,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:13:16,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:13:16,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:13:16,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:13:16,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:13:16,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:13:16,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:13:16,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:13:16,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:13:16,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:13:16,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:13:16,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:13:16,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:13:16,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:13:16,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:13:16,789 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:13:16,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:13:16,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:13:16,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:13:16,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:13:16,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:13:16,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:13:16,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:13:16,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:13:16,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:13:16,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:13:16,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:13:16,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:13:16,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:13:16,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:13:16,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:13:16,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:13:16,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:13:16,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:13:16,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:13:16,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:13:16,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:13:16,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:13:16,839 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:13:16,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:13:16,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:13:16,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:13:16,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:13:16,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:13:16,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:13:16,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:13:16,842 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:13:16,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:13:16,843 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:13:16,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:13:16,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:13:16,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:13:16,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:13:16,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:13:16,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:13:16,844 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:13:16,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:13:16,844 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:13:16,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:13:16,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:13:16,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:13:16,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:13:16,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:13:16,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:13:16,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:13:16,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:13:16,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:13:16,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:13:16,847 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:13:16,847 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:13:16,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:13:16,847 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8f420e2027982da4f1bb18a6387f830c2a1e2f24637d0451d3246965ba37a6d [2022-07-13 11:13:17,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:13:17,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:13:17,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:13:17,072 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:13:17,072 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:13:17,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/res2o.c [2022-07-13 11:13:17,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f605a09c/a5f5d8ac97f745228eac176607064a82/FLAG4fda3d47e [2022-07-13 11:13:17,515 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:13:17,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/res2o.c [2022-07-13 11:13:17,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f605a09c/a5f5d8ac97f745228eac176607064a82/FLAG4fda3d47e [2022-07-13 11:13:17,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f605a09c/a5f5d8ac97f745228eac176607064a82 [2022-07-13 11:13:17,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:13:17,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:13:17,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:13:17,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:13:17,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:13:17,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:13:17" (1/1) ... [2022-07-13 11:13:17,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bd8f36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:13:17, skipping insertion in model container [2022-07-13 11:13:17,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:13:17" (1/1) ... [2022-07-13 11:13:17,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:13:17,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:13:17,700 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/array-fpi/res2o.c[588,601] [2022-07-13 11:13:17,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:13:17,724 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:13:17,734 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/array-fpi/res2o.c[588,601] [2022-07-13 11:13:17,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:13:17,754 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:13:17,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:13:17 WrapperNode [2022-07-13 11:13:17,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:13:17,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:13:17,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:13:17,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:13:17,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:13:17" (1/1) ... [2022-07-13 11:13:17,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:13:17" (1/1) ... [2022-07-13 11:13:17,783 INFO L137 Inliner]: procedures = 17, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 113 [2022-07-13 11:13:17,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:13:17,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:13:17,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:13:17,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:13:17,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:13:17" (1/1) ... [2022-07-13 11:13:17,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:13:17" (1/1) ... [2022-07-13 11:13:17,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:13:17" (1/1) ... [2022-07-13 11:13:17,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:13:17" (1/1) ... [2022-07-13 11:13:17,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:13:17" (1/1) ... [2022-07-13 11:13:17,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:13:17" (1/1) ... [2022-07-13 11:13:17,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:13:17" (1/1) ... [2022-07-13 11:13:17,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:13:17,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:13:17,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:13:17,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:13:17,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:13:17" (1/1) ... [2022-07-13 11:13:17,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:13:17,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:13:17,840 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) [2022-07-13 11:13:17,855 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 [2022-07-13 11:13:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:13:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:13:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 11:13:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 11:13:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 11:13:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:13:17,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:13:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 11:13:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 11:13:17,932 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:13:17,933 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:13:18,158 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:13:18,163 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:13:18,163 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 11:13:18,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:13:18 BoogieIcfgContainer [2022-07-13 11:13:18,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:13:18,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:13:18,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:13:18,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:13:18,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:13:17" (1/3) ... [2022-07-13 11:13:18,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627532d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:13:18, skipping insertion in model container [2022-07-13 11:13:18,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:13:17" (2/3) ... [2022-07-13 11:13:18,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627532d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:13:18, skipping insertion in model container [2022-07-13 11:13:18,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:13:18" (3/3) ... [2022-07-13 11:13:18,177 INFO L111 eAbstractionObserver]: Analyzing ICFG res2o.c [2022-07-13 11:13:18,200 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:13:18,200 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:13:18,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:13:18,250 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5f13ed8a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@79c13c86 [2022-07-13 11:13:18,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:13:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 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) [2022-07-13 11:13:18,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 11:13:18,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:13:18,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:13:18,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:13:18,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:13:18,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1780399656, now seen corresponding path program 1 times [2022-07-13 11:13:18,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:13:18,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998321753] [2022-07-13 11:13:18,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:13:18,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:13:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:13:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:13:18,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:13:18,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998321753] [2022-07-13 11:13:18,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998321753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:13:18,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:13:18,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:13:18,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257890880] [2022-07-13 11:13:18,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:13:18,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 11:13:18,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:13:18,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 11:13:18,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 11:13:18,459 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 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) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:13:18,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:13:18,477 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-07-13 11:13:18,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 11:13:18,480 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-07-13 11:13:18,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:13:18,486 INFO L225 Difference]: With dead ends: 56 [2022-07-13 11:13:18,487 INFO L226 Difference]: Without dead ends: 26 [2022-07-13 11:13:18,489 INFO L412 NwaCegarLoop]: 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 [2022-07-13 11:13:18,497 INFO L413 NwaCegarLoop]: 36 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, 36 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 [2022-07-13 11:13:18,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:13:18,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-13 11:13:18,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-13 11:13:18,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:13:18,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-07-13 11:13:18,543 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 19 [2022-07-13 11:13:18,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:13:18,544 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-07-13 11:13:18,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:13:18,545 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-07-13 11:13:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 11:13:18,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:13:18,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:13:18,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:13:18,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:13:18,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:13:18,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1279549768, now seen corresponding path program 1 times [2022-07-13 11:13:18,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:13:18,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705756965] [2022-07-13 11:13:18,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:13:18,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:13:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:13:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:13:18,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:13:18,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705756965] [2022-07-13 11:13:18,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705756965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:13:18,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:13:18,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:13:18,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053745666] [2022-07-13 11:13:18,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:13:18,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:13:18,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:13:18,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:13:18,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:13:18,705 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:13:18,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:13:18,799 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2022-07-13 11:13:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:13:18,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-07-13 11:13:18,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:13:18,802 INFO L225 Difference]: With dead ends: 57 [2022-07-13 11:13:18,803 INFO L226 Difference]: Without dead ends: 38 [2022-07-13 11:13:18,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:13:18,805 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:13:18,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 14 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:13:18,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-13 11:13:18,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-07-13 11:13:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:13:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-07-13 11:13:18,811 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 19 [2022-07-13 11:13:18,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:13:18,811 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-07-13 11:13:18,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:13:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-07-13 11:13:18,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-13 11:13:18,812 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:13:18,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:13:18,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 11:13:18,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:13:18,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:13:18,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1740145276, now seen corresponding path program 1 times [2022-07-13 11:13:18,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:13:18,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184239206] [2022-07-13 11:13:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:13:18,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:13:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:13:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:13:19,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:13:19,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184239206] [2022-07-13 11:13:19,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184239206] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:13:19,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083488527] [2022-07-13 11:13:19,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:13:19,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:13:19,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:13:19,990 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) [2022-07-13 11:13:19,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 11:13:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:13:20,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-13 11:13:20,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:13:20,217 INFO L390 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 18 treesize of output 16 [2022-07-13 11:13:20,234 INFO L390 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 11 treesize of output 7 [2022-07-13 11:13:20,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:20,319 INFO L390 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 19 treesize of output 18 [2022-07-13 11:13:20,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:20,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:20,542 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-13 11:13:20,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2022-07-13 11:13:20,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:20,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:20,781 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-13 11:13:20,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38 [2022-07-13 11:13:21,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:21,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:21,036 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-13 11:13:21,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 46 [2022-07-13 11:13:21,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:21,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 46 treesize of output 36 [2022-07-13 11:13:21,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:21,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 46 treesize of output 36 [2022-07-13 11:13:21,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:21,562 INFO L390 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 35 treesize of output 15 [2022-07-13 11:13:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:13:21,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:13:26,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:13:26,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:13:26,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:13:26,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:13:26,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:13:26,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:13:26,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083488527] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:13:26,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 11:13:26,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 41 [2022-07-13 11:13:26,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391752682] [2022-07-13 11:13:26,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 11:13:26,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-13 11:13:26,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:13:26,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-13 11:13:26,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1374, Unknown=1, NotChecked=0, Total=1640 [2022-07-13 11:13:26,128 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 41 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:13:27,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:13:27,694 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2022-07-13 11:13:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 11:13:27,694 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 41 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-07-13 11:13:27,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:13:27,699 INFO L225 Difference]: With dead ends: 63 [2022-07-13 11:13:27,699 INFO L226 Difference]: Without dead ends: 59 [2022-07-13 11:13:27,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 39 SyntacticMatches, 16 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=597, Invalid=2594, Unknown=1, NotChecked=0, Total=3192 [2022-07-13 11:13:27,702 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 94 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:13:27,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 121 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 215 Invalid, 0 Unknown, 295 Unchecked, 0.3s Time] [2022-07-13 11:13:27,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-13 11:13:27,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 41. [2022-07-13 11:13:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:13:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-07-13 11:13:27,717 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 31 [2022-07-13 11:13:27,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:13:27,717 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-07-13 11:13:27,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 41 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:13:27,718 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-07-13 11:13:27,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-13 11:13:27,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:13:27,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:13:27,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 11:13:27,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:13:27,940 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:13:27,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:13:27,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1839245574, now seen corresponding path program 2 times [2022-07-13 11:13:27,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:13:27,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238760827] [2022-07-13 11:13:27,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:13:27,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:13:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:13:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 11:13:28,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:13:28,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238760827] [2022-07-13 11:13:28,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238760827] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:13:28,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760467038] [2022-07-13 11:13:28,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 11:13:28,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:13:28,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:13:28,046 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) [2022-07-13 11:13:28,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 11:13:28,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 11:13:28,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 11:13:28,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 11:13:28,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:13:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 11:13:28,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:13:28,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 11:13:28,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760467038] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:13:28,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 11:13:28,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-07-13 11:13:28,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931709704] [2022-07-13 11:13:28,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 11:13:28,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 11:13:28,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:13:28,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 11:13:28,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-13 11:13:28,225 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:13:28,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:13:28,400 INFO L93 Difference]: Finished difference Result 116 states and 136 transitions. [2022-07-13 11:13:28,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:13:28,400 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 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 33 [2022-07-13 11:13:28,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:13:28,401 INFO L225 Difference]: With dead ends: 116 [2022-07-13 11:13:28,401 INFO L226 Difference]: Without dead ends: 62 [2022-07-13 11:13:28,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-07-13 11:13:28,402 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 96 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:13:28,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 31 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:13:28,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-07-13 11:13:28,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2022-07-13 11:13:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:13:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-07-13 11:13:28,411 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 33 [2022-07-13 11:13:28,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:13:28,411 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-07-13 11:13:28,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:13:28,411 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-07-13 11:13:28,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-13 11:13:28,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:13:28,412 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:13:28,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 11:13:28,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-13 11:13:28,627 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:13:28,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:13:28,628 INFO L85 PathProgramCache]: Analyzing trace with hash -284383476, now seen corresponding path program 3 times [2022-07-13 11:13:28,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:13:28,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584648785] [2022-07-13 11:13:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:13:28,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:13:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:13:28,689 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 11:13:28,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:13:28,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584648785] [2022-07-13 11:13:28,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584648785] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:13:28,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366735235] [2022-07-13 11:13:28,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 11:13:28,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:13:28,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:13:28,692 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) [2022-07-13 11:13:28,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 11:13:28,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 11:13:28,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 11:13:28,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 11:13:28,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:13:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 11:13:28,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:13:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 11:13:28,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366735235] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:13:28,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 11:13:28,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-07-13 11:13:28,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648879051] [2022-07-13 11:13:28,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 11:13:28,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 11:13:28,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:13:28,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 11:13:28,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-13 11:13:28,911 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 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) [2022-07-13 11:13:29,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:13:29,068 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2022-07-13 11:13:29,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 11:13:29,068 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-07-13 11:13:29,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:13:29,069 INFO L225 Difference]: With dead ends: 57 [2022-07-13 11:13:29,069 INFO L226 Difference]: Without dead ends: 49 [2022-07-13 11:13:29,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-07-13 11:13:29,070 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 63 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:13:29,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 30 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:13:29,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-07-13 11:13:29,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2022-07-13 11:13:29,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 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) [2022-07-13 11:13:29,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2022-07-13 11:13:29,077 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 39 [2022-07-13 11:13:29,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:13:29,080 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2022-07-13 11:13:29,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 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) [2022-07-13 11:13:29,081 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-07-13 11:13:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 11:13:29,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:13:29,083 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:13:29,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 11:13:29,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:13:29,296 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:13:29,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:13:29,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1410382416, now seen corresponding path program 4 times [2022-07-13 11:13:29,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:13:29,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063992555] [2022-07-13 11:13:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:13:29,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:13:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:13:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:13:32,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:13:32,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063992555] [2022-07-13 11:13:32,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063992555] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:13:32,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19152914] [2022-07-13 11:13:32,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 11:13:32,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:13:32,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:13:32,049 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) [2022-07-13 11:13:32,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 11:13:32,121 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 11:13:32,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 11:13:32,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 85 conjunts are in the unsatisfiable core [2022-07-13 11:13:32,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:13:32,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:32,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:32,170 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-13 11:13:32,170 INFO L390 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 32 treesize of output 28 [2022-07-13 11:13:32,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-13 11:13:32,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:32,264 INFO L390 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 23 treesize of output 22 [2022-07-13 11:13:32,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:32,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:32,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-07-13 11:13:32,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:32,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:32,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:32,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-07-13 11:13:32,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:32,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:32,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:32,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:32,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 52 [2022-07-13 11:13:33,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2022-07-13 11:13:33,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 74 [2022-07-13 11:13:33,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:13:33,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:33,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 86 [2022-07-13 11:13:34,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:34,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:34,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:34,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:34,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:34,109 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 80 [2022-07-13 11:13:34,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:34,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:34,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:34,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:34,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:34,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:13:34,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 86 [2022-07-13 11:13:34,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:34,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:34,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:34,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:34,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 81 [2022-07-13 11:13:35,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:35,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:13:35,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:35,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:35,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:35,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 86 [2022-07-13 11:13:35,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:35,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:35,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:35,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 81 [2022-07-13 11:13:36,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:36,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:36,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:13:36,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 31 [2022-07-13 11:13:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:13:36,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:16:26,265 WARN L833 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (or (forall ((v_ArrVal_335 Int) (v_ArrVal_344 Int) (v_ArrVal_332 Int) (v_ArrVal_342 Int) (v_ArrVal_330 Int) (v_ArrVal_340 Int) (v_ArrVal_328 Int) (v_ArrVal_339 Int) (v_ArrVal_337 Int) (v_ArrVal_347 Int)) (let ((.cse2 (+ |c_ULTIMATE.start_main_~c~0#1.offset| 4)) (.cse3 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse0 (let ((.cse4 (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_328)))) (store .cse5 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (select .cse5 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_330) .cse3 v_ArrVal_332))))) (store .cse4 |c_ULTIMATE.start_main_~c~0#1.base| (store (store (select .cse4 |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset| v_ArrVal_335) .cse2 v_ArrVal_337))))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_328 1)) (not (<= v_ArrVal_339 (+ (select (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_342 (+ v_ArrVal_340 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_340)) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= v_ArrVal_330 1)) (not (<= v_ArrVal_332 1)) (not (<= v_ArrVal_340 (+ v_ArrVal_339 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_339)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) (<= (+ v_ArrVal_347 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_347)) |c_ULTIMATE.start_main_~c~0#1.base|) .cse2)) (* 3 ~N~0)) (not (<= v_ArrVal_335 1)) (not (<= v_ArrVal_344 (+ v_ArrVal_342 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_342)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse3)))) (not (<= v_ArrVal_347 (+ v_ArrVal_344 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_344)) |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)))) (not (<= v_ArrVal_337 1))))))) (not (< |c_ULTIMATE.start_main_~i~0#1| ~N~0)))) is different from false [2022-07-13 11:17:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 6 times theorem prover too weak. 0 trivial. 2 not checked. [2022-07-13 11:17:38,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19152914] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:17:38,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 11:17:38,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 27, 27] total 82 [2022-07-13 11:17:38,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880229554] [2022-07-13 11:17:38,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 11:17:38,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-07-13 11:17:38,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:17:38,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-07-13 11:17:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=5880, Unknown=75, NotChecked=158, Total=6642 [2022-07-13 11:17:38,603 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 82 states, 82 states have (on average 1.4146341463414633) internal successors, (116), 82 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:17:49,901 WARN L233 SmtUtils]: Spent 10.79s on a formula simplification. DAG size of input: 132 DAG size of output: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)