./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_monotonic.i --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-industry-pattern/array_of_struct_ptr_monotonic.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 32c4229282aa8583dd78af7db3951b4b02cf6352dc78922adb29bd4d79cf61bb --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 09:54:43,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 09:54:43,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 09:54:43,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 09:54:43,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 09:54:43,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 09:54:43,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 09:54:43,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 09:54:43,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 09:54:43,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 09:54:43,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 09:54:43,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 09:54:43,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 09:54:43,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 09:54:43,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 09:54:43,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 09:54:43,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 09:54:43,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 09:54:43,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 09:54:43,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 09:54:44,000 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 09:54:44,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 09:54:44,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 09:54:44,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 09:54:44,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 09:54:44,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 09:54:44,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 09:54:44,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 09:54:44,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 09:54:44,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 09:54:44,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 09:54:44,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 09:54:44,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 09:54:44,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 09:54:44,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 09:54:44,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 09:54:44,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 09:54:44,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 09:54:44,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 09:54:44,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 09:54:44,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 09:54:44,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 09:54:44,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 09:54:44,039 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 09:54:44,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 09:54:44,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 09:54:44,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 09:54:44,042 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 09:54:44,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 09:54:44,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 09:54:44,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 09:54:44,043 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 09:54:44,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 09:54:44,044 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 09:54:44,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 09:54:44,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 09:54:44,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 09:54:44,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 09:54:44,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 09:54:44,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 09:54:44,045 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 09:54:44,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 09:54:44,046 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 09:54:44,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 09:54:44,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 09:54:44,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 09:54:44,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 09:54:44,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 09:54:44,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 09:54:44,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 09:54:44,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 09:54:44,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 09:54:44,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 09:54:44,048 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 09:54:44,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 09:54:44,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 09:54:44,048 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32c4229282aa8583dd78af7db3951b4b02cf6352dc78922adb29bd4d79cf61bb [2022-07-13 09:54:44,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 09:54:44,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 09:54:44,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 09:54:44,266 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 09:54:44,268 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 09:54:44,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_monotonic.i [2022-07-13 09:54:44,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1411ac7a3/8303c765e518416f8c3a3e1971e5af1f/FLAG785836704 [2022-07-13 09:54:44,682 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 09:54:44,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_monotonic.i [2022-07-13 09:54:44,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1411ac7a3/8303c765e518416f8c3a3e1971e5af1f/FLAG785836704 [2022-07-13 09:54:44,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1411ac7a3/8303c765e518416f8c3a3e1971e5af1f [2022-07-13 09:54:44,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 09:54:44,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 09:54:44,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 09:54:44,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 09:54:44,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 09:54:44,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:54:44" (1/1) ... [2022-07-13 09:54:44,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63487ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:54:44, skipping insertion in model container [2022-07-13 09:54:44,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:54:44" (1/1) ... [2022-07-13 09:54:44,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 09:54:44,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 09:54:44,832 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-industry-pattern/array_of_struct_ptr_monotonic.i[999,1012] [2022-07-13 09:54:44,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 09:54:44,846 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 09:54:44,853 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-industry-pattern/array_of_struct_ptr_monotonic.i[999,1012] [2022-07-13 09:54:44,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 09:54:44,865 INFO L208 MainTranslator]: Completed translation [2022-07-13 09:54:44,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:54:44 WrapperNode [2022-07-13 09:54:44,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 09:54:44,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 09:54:44,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 09:54:44,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 09:54:44,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:54:44" (1/1) ... [2022-07-13 09:54:44,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:54:44" (1/1) ... [2022-07-13 09:54:44,885 INFO L137 Inliner]: procedures = 19, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2022-07-13 09:54:44,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 09:54:44,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 09:54:44,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 09:54:44,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 09:54:44,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:54:44" (1/1) ... [2022-07-13 09:54:44,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:54:44" (1/1) ... [2022-07-13 09:54:44,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:54:44" (1/1) ... [2022-07-13 09:54:44,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:54:44" (1/1) ... [2022-07-13 09:54:44,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:54:44" (1/1) ... [2022-07-13 09:54:44,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:54:44" (1/1) ... [2022-07-13 09:54:44,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:54:44" (1/1) ... [2022-07-13 09:54:44,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 09:54:44,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 09:54:44,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 09:54:44,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 09:54:44,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:54:44" (1/1) ... [2022-07-13 09:54:44,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 09:54:44,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 09:54:44,961 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 09:54:44,989 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 09:54:45,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 09:54:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 09:54:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 09:54:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 09:54:45,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 09:54:45,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 09:54:45,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 09:54:45,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 09:54:45,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 09:54:45,098 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 09:54:45,100 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 09:54:45,214 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 09:54:45,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 09:54:45,219 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 09:54:45,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:54:45 BoogieIcfgContainer [2022-07-13 09:54:45,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 09:54:45,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 09:54:45,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 09:54:45,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 09:54:45,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:54:44" (1/3) ... [2022-07-13 09:54:45,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a69045d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:54:45, skipping insertion in model container [2022-07-13 09:54:45,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:54:44" (2/3) ... [2022-07-13 09:54:45,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a69045d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:54:45, skipping insertion in model container [2022-07-13 09:54:45,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:54:45" (3/3) ... [2022-07-13 09:54:45,250 INFO L111 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_monotonic.i [2022-07-13 09:54:45,267 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 09:54:45,269 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 09:54:45,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 09:54:45,335 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@49d72e30, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3081dc9e [2022-07-13 09:54:45,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 09:54:45,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 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) [2022-07-13 09:54:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 09:54:45,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:54:45,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:54:45,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:54:45,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:54:45,352 INFO L85 PathProgramCache]: Analyzing trace with hash 590963434, now seen corresponding path program 1 times [2022-07-13 09:54:45,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:54:45,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432173404] [2022-07-13 09:54:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:54:45,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:54:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:54:45,464 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 09:54:45,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:54:45,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432173404] [2022-07-13 09:54:45,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432173404] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 09:54:45,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 09:54:45,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 09:54:45,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314661341] [2022-07-13 09:54:45,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 09:54:45,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 09:54:45,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 09:54:45,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 09:54:45,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 09:54:45,499 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 09:54:45,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 09:54:45,510 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2022-07-13 09:54:45,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 09:54:45,512 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-07-13 09:54:45,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 09:54:45,524 INFO L225 Difference]: With dead ends: 28 [2022-07-13 09:54:45,524 INFO L226 Difference]: Without dead ends: 14 [2022-07-13 09:54:45,527 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 09:54:45,530 INFO L413 NwaCegarLoop]: 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 [2022-07-13 09:54:45,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 09:54:45,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-13 09:54:45,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-13 09:54:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 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) [2022-07-13 09:54:45,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-07-13 09:54:45,555 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2022-07-13 09:54:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 09:54:45,555 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-07-13 09:54:45,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 09:54:45,555 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-07-13 09:54:45,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 09:54:45,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:54:45,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:54:45,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 09:54:45,557 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:54:45,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:54:45,558 INFO L85 PathProgramCache]: Analyzing trace with hash 218784471, now seen corresponding path program 1 times [2022-07-13 09:54:45,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:54:45,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474531069] [2022-07-13 09:54:45,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:54:45,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:54:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:54:45,610 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 09:54:45,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:54:45,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474531069] [2022-07-13 09:54:45,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474531069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 09:54:45,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 09:54:45,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 09:54:45,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575732937] [2022-07-13 09:54:45,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 09:54:45,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 09:54:45,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 09:54:45,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 09:54:45,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 09:54:45,617 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 09:54:45,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 09:54:45,650 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2022-07-13 09:54:45,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 09:54:45,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-07-13 09:54:45,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 09:54:45,652 INFO L225 Difference]: With dead ends: 33 [2022-07-13 09:54:45,652 INFO L226 Difference]: Without dead ends: 25 [2022-07-13 09:54:45,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 09:54:45,653 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 09:54:45,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 21 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 09:54:45,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-13 09:54:45,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2022-07-13 09:54:45,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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 09:54:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-07-13 09:54:45,662 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 8 [2022-07-13 09:54:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 09:54:45,663 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-07-13 09:54:45,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 09:54:45,665 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2022-07-13 09:54:45,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-13 09:54:45,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:54:45,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:54:45,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 09:54:45,667 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:54:45,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:54:45,668 INFO L85 PathProgramCache]: Analyzing trace with hash 212359228, now seen corresponding path program 1 times [2022-07-13 09:54:45,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:54:45,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573943116] [2022-07-13 09:54:45,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:54:45,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:54:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:54:45,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 09:54:45,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:54:45,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573943116] [2022-07-13 09:54:45,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573943116] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 09:54:45,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934328470] [2022-07-13 09:54:45,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:54:45,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 09:54:45,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 09:54:45,753 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 09:54:45,788 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 09:54:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:54:45,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 09:54:45,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 09:54:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 09:54:45,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 09:54:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 09:54:45,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934328470] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 09:54:45,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 09:54:45,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-13 09:54:45,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573925791] [2022-07-13 09:54:45,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 09:54:45,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 09:54:45,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 09:54:45,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 09:54:45,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 09:54:45,907 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 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) [2022-07-13 09:54:45,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 09:54:45,960 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2022-07-13 09:54:45,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 09:54:45,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 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) Word has length 12 [2022-07-13 09:54:45,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 09:54:45,961 INFO L225 Difference]: With dead ends: 57 [2022-07-13 09:54:45,962 INFO L226 Difference]: Without dead ends: 49 [2022-07-13 09:54:45,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 09:54:45,963 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 52 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 09:54:45,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 48 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 09:54:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-07-13 09:54:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2022-07-13 09:54:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 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) [2022-07-13 09:54:45,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-07-13 09:54:45,976 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 12 [2022-07-13 09:54:45,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 09:54:45,976 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-07-13 09:54:45,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 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) [2022-07-13 09:54:45,977 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-07-13 09:54:45,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-13 09:54:45,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:54:45,977 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:54:45,997 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 09:54:46,193 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 09:54:46,194 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:54:46,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:54:46,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2102142613, now seen corresponding path program 2 times [2022-07-13 09:54:46,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:54:46,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679127169] [2022-07-13 09:54:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:54:46,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:54:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:54:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 09:54:46,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:54:46,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679127169] [2022-07-13 09:54:46,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679127169] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 09:54:46,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599053712] [2022-07-13 09:54:46,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 09:54:46,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 09:54:46,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 09:54:46,353 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 09:54:46,360 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 09:54:46,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 09:54:46,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 09:54:46,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 09:54:46,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 09:54:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 09:54:46,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 09:54:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 09:54:46,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599053712] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 09:54:46,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 09:54:46,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-07-13 09:54:46,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247209629] [2022-07-13 09:54:46,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 09:54:46,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 09:54:46,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 09:54:46,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 09:54:46,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-13 09:54:46,588 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:54:46,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 09:54:46,654 INFO L93 Difference]: Finished difference Result 123 states and 151 transitions. [2022-07-13 09:54:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 09:54:46,655 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-13 09:54:46,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 09:54:46,656 INFO L225 Difference]: With dead ends: 123 [2022-07-13 09:54:46,656 INFO L226 Difference]: Without dead ends: 115 [2022-07-13 09:54:46,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-13 09:54:46,657 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 214 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 09:54:46,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 86 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 09:54:46,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-07-13 09:54:46,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 51. [2022-07-13 09:54:46,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.26) internal successors, (63), 50 states have internal predecessors, (63), 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 09:54:46,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2022-07-13 09:54:46,662 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 24 [2022-07-13 09:54:46,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 09:54:46,662 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2022-07-13 09:54:46,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:54:46,662 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2022-07-13 09:54:46,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-13 09:54:46,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:54:46,663 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:54:46,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 09:54:46,884 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 09:54:46,884 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:54:46,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:54:46,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1900720201, now seen corresponding path program 3 times [2022-07-13 09:54:46,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:54:46,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706707870] [2022-07-13 09:54:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:54:46,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:54:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:54:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 09:54:47,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:54:47,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706707870] [2022-07-13 09:54:47,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706707870] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 09:54:47,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165447442] [2022-07-13 09:54:47,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 09:54:47,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 09:54:47,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 09:54:47,072 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 09:54:47,073 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 09:58:08,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-07-13 09:58:08,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 09:58:09,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 09:58:09,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 09:58:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 09:58:09,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 09:58:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 09:58:09,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165447442] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 09:58:09,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 09:58:09,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-07-13 09:58:09,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084678392] [2022-07-13 09:58:09,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 09:58:09,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 09:58:09,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 09:58:09,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 09:58:09,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-07-13 09:58:09,400 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:58:09,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 09:58:09,582 INFO L93 Difference]: Finished difference Result 255 states and 313 transitions. [2022-07-13 09:58:09,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 09:58:09,584 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-07-13 09:58:09,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 09:58:09,587 INFO L225 Difference]: With dead ends: 255 [2022-07-13 09:58:09,587 INFO L226 Difference]: Without dead ends: 247 [2022-07-13 09:58:09,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-07-13 09:58:09,589 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 499 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 09:58:09,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 193 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 09:58:09,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-07-13 09:58:09,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 99. [2022-07-13 09:58:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 98 states have internal predecessors, (123), 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 09:58:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 123 transitions. [2022-07-13 09:58:09,607 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 123 transitions. Word has length 48 [2022-07-13 09:58:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 09:58:09,607 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 123 transitions. [2022-07-13 09:58:09,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 09:58:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 123 transitions. [2022-07-13 09:58:09,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-13 09:58:09,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 09:58:09,611 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 09:58:09,672 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 09:58:09,823 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 09:58:09,823 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 09:58:09,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 09:58:09,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1254666245, now seen corresponding path program 4 times [2022-07-13 09:58:09,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 09:58:09,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846374896] [2022-07-13 09:58:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 09:58:09,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 09:58:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 09:58:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 09:58:10,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 09:58:10,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846374896] [2022-07-13 09:58:10,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846374896] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 09:58:10,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125309289] [2022-07-13 09:58:10,295 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 09:58:10,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 09:58:10,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 09:58:10,298 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 09:58:10,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process