./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/forester-heap/sll-sorted-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version e19ca921 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/sll-sorted-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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 valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e45b14428dafe2f20aeac8c38d2592befc15b6791b0365935474ded4fd47d0f2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 16:22:41,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 16:22:41,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 16:22:42,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 16:22:42,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 16:22:42,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 16:22:42,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 16:22:42,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 16:22:42,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 16:22:42,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 16:22:42,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 16:22:42,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 16:22:42,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 16:22:42,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 16:22:42,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 16:22:42,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 16:22:42,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 16:22:42,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 16:22:42,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 16:22:42,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 16:22:42,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 16:22:42,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 16:22:42,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 16:22:42,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 16:22:42,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 16:22:42,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 16:22:42,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 16:22:42,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 16:22:42,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 16:22:42,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 16:22:42,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 16:22:42,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 16:22:42,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 16:22:42,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 16:22:42,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 16:22:42,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 16:22:42,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 16:22:42,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 16:22:42,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 16:22:42,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 16:22:42,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 16:22:42,077 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-12-22 16:22:42,101 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 16:22:42,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 16:22:42,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 16:22:42,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 16:22:42,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 16:22:42,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 16:22:42,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 16:22:42,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 16:22:42,104 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 16:22:42,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 16:22:42,105 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 16:22:42,105 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 16:22:42,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 16:22:42,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 16:22:42,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 16:22:42,105 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 16:22:42,106 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 16:22:42,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 16:22:42,106 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 16:22:42,106 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 16:22:42,106 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 16:22:42,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 16:22:42,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 16:22:42,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 16:22:42,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:22:42,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 16:22:42,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 16:22:42,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 16:22:42,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 16:22:42,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 16:22:42,108 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e45b14428dafe2f20aeac8c38d2592befc15b6791b0365935474ded4fd47d0f2 [2021-12-22 16:22:42,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 16:22:42,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 16:22:42,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 16:22:42,410 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 16:22:42,410 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 16:22:42,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-sorted-1.i [2021-12-22 16:22:42,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8677860b3/1c5c436766154805819d53a45d494891/FLAGe24e8107c [2021-12-22 16:22:42,845 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 16:22:42,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-1.i [2021-12-22 16:22:42,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8677860b3/1c5c436766154805819d53a45d494891/FLAGe24e8107c [2021-12-22 16:22:43,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8677860b3/1c5c436766154805819d53a45d494891 [2021-12-22 16:22:43,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 16:22:43,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 16:22:43,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 16:22:43,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 16:22:43,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 16:22:43,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:22:43" (1/1) ... [2021-12-22 16:22:43,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e374fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:43, skipping insertion in model container [2021-12-22 16:22:43,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:22:43" (1/1) ... [2021-12-22 16:22:43,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 16:22:43,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 16:22:43,506 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/forester-heap/sll-sorted-1.i[22317,22330] [2021-12-22 16:22:43,509 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/forester-heap/sll-sorted-1.i[22547,22560] [2021-12-22 16:22:43,511 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/forester-heap/sll-sorted-1.i[22877,22890] [2021-12-22 16:22:43,511 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/forester-heap/sll-sorted-1.i[22941,22954] [2021-12-22 16:22:43,512 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/forester-heap/sll-sorted-1.i[23072,23085] [2021-12-22 16:22:43,513 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/forester-heap/sll-sorted-1.i[23136,23149] [2021-12-22 16:22:43,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:22:43,524 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 16:22:43,546 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/forester-heap/sll-sorted-1.i[22317,22330] [2021-12-22 16:22:43,548 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/forester-heap/sll-sorted-1.i[22547,22560] [2021-12-22 16:22:43,550 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/forester-heap/sll-sorted-1.i[22877,22890] [2021-12-22 16:22:43,550 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/forester-heap/sll-sorted-1.i[22941,22954] [2021-12-22 16:22:43,551 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/forester-heap/sll-sorted-1.i[23072,23085] [2021-12-22 16:22:43,551 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/forester-heap/sll-sorted-1.i[23136,23149] [2021-12-22 16:22:43,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:22:43,569 INFO L208 MainTranslator]: Completed translation [2021-12-22 16:22:43,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:43 WrapperNode [2021-12-22 16:22:43,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 16:22:43,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 16:22:43,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 16:22:43,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 16:22:43,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:43" (1/1) ... [2021-12-22 16:22:43,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:43" (1/1) ... [2021-12-22 16:22:43,626 INFO L137 Inliner]: procedures = 119, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 189 [2021-12-22 16:22:43,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 16:22:43,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 16:22:43,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 16:22:43,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 16:22:43,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:43" (1/1) ... [2021-12-22 16:22:43,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:43" (1/1) ... [2021-12-22 16:22:43,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:43" (1/1) ... [2021-12-22 16:22:43,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:43" (1/1) ... [2021-12-22 16:22:43,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:43" (1/1) ... [2021-12-22 16:22:43,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:43" (1/1) ... [2021-12-22 16:22:43,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:43" (1/1) ... [2021-12-22 16:22:43,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 16:22:43,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 16:22:43,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 16:22:43,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 16:22:43,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:43" (1/1) ... [2021-12-22 16:22:43,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:22:43,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:22:43,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 16:22:43,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 16:22:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 16:22:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 16:22:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 16:22:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 16:22:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 16:22:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 16:22:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 16:22:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 16:22:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 16:22:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 16:22:43,844 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 16:22:43,846 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 16:22:44,119 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 16:22:44,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 16:22:44,124 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-12-22 16:22:44,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:22:44 BoogieIcfgContainer [2021-12-22 16:22:44,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 16:22:44,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 16:22:44,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 16:22:44,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 16:22:44,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:22:43" (1/3) ... [2021-12-22 16:22:44,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661c90c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:22:44, skipping insertion in model container [2021-12-22 16:22:44,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:22:43" (2/3) ... [2021-12-22 16:22:44,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661c90c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:22:44, skipping insertion in model container [2021-12-22 16:22:44,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:22:44" (3/3) ... [2021-12-22 16:22:44,132 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-sorted-1.i [2021-12-22 16:22:44,135 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 16:22:44,135 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2021-12-22 16:22:44,160 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 16:22:44,164 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 16:22:44,165 INFO L340 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2021-12-22 16:22:44,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 90 states have (on average 2.1555555555555554) internal successors, (194), 158 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:44,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-22 16:22:44,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:44,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-22 16:22:44,179 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:44,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:44,182 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-22 16:22:44,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:44,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964954275] [2021-12-22 16:22:44,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:44,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:44,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:44,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:44,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964954275] [2021-12-22 16:22:44,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964954275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:22:44,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:22:44,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:22:44,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460931194] [2021-12-22 16:22:44,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:22:44,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:22:44,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:44,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:22:44,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:22:44,344 INFO L87 Difference]: Start difference. First operand has 159 states, 90 states have (on average 2.1555555555555554) internal successors, (194), 158 states have internal predecessors, (194), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:44,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:44,469 INFO L93 Difference]: Finished difference Result 163 states and 174 transitions. [2021-12-22 16:22:44,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:22:44,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-12-22 16:22:44,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:44,479 INFO L225 Difference]: With dead ends: 163 [2021-12-22 16:22:44,479 INFO L226 Difference]: Without dead ends: 159 [2021-12-22 16:22:44,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:22:44,483 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 153 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:44,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 111 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:22:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-12-22 16:22:44,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2021-12-22 16:22:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 89 states have (on average 1.8651685393258426) internal successors, (166), 154 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2021-12-22 16:22:44,536 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 3 [2021-12-22 16:22:44,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:44,536 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2021-12-22 16:22:44,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:44,537 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2021-12-22 16:22:44,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-22 16:22:44,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:44,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-22 16:22:44,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 16:22:44,538 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:44,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:44,541 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-22 16:22:44,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:44,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754360441] [2021-12-22 16:22:44,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:44,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:44,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:44,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:44,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754360441] [2021-12-22 16:22:44,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754360441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:22:44,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:22:44,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:22:44,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061294471] [2021-12-22 16:22:44,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:22:44,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:22:44,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:44,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:22:44,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:22:44,605 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:44,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:44,700 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2021-12-22 16:22:44,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:22:44,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-12-22 16:22:44,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:44,703 INFO L225 Difference]: With dead ends: 157 [2021-12-22 16:22:44,703 INFO L226 Difference]: Without dead ends: 157 [2021-12-22 16:22:44,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:22:44,706 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 149 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:44,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 109 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:22:44,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-22 16:22:44,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2021-12-22 16:22:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 89 states have (on average 1.8426966292134832) internal successors, (164), 152 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:44,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 164 transitions. [2021-12-22 16:22:44,726 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 164 transitions. Word has length 3 [2021-12-22 16:22:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:44,727 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 164 transitions. [2021-12-22 16:22:44,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:44,727 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 164 transitions. [2021-12-22 16:22:44,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 16:22:44,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:44,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:22:44,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 16:22:44,730 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:44,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:44,731 INFO L85 PathProgramCache]: Analyzing trace with hash 59263661, now seen corresponding path program 1 times [2021-12-22 16:22:44,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:44,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440355101] [2021-12-22 16:22:44,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:44,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:44,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:44,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440355101] [2021-12-22 16:22:44,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440355101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:22:44,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:22:44,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:22:44,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187377782] [2021-12-22 16:22:44,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:22:44,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:22:44,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:44,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:22:44,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:22:44,813 INFO L87 Difference]: Start difference. First operand 153 states and 164 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-12-22 16:22:44,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:44,974 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2021-12-22 16:22:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:22:44,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2021-12-22 16:22:44,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:44,976 INFO L225 Difference]: With dead ends: 162 [2021-12-22 16:22:44,976 INFO L226 Difference]: Without dead ends: 162 [2021-12-22 16:22:44,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:22:44,977 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 264 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:44,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 84 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:22:44,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-12-22 16:22:44,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 151. [2021-12-22 16:22:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 103 states have (on average 1.6796116504854368) internal successors, (173), 150 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:44,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 173 transitions. [2021-12-22 16:22:44,983 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 173 transitions. Word has length 8 [2021-12-22 16:22:44,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:44,983 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 173 transitions. [2021-12-22 16:22:44,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-12-22 16:22:44,983 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 173 transitions. [2021-12-22 16:22:44,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 16:22:44,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:44,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:22:44,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 16:22:44,984 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:44,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:44,985 INFO L85 PathProgramCache]: Analyzing trace with hash 59263662, now seen corresponding path program 1 times [2021-12-22 16:22:44,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:44,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568506725] [2021-12-22 16:22:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:44,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:45,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:45,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568506725] [2021-12-22 16:22:45,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568506725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:22:45,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:22:45,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:22:45,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503938645] [2021-12-22 16:22:45,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:22:45,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:22:45,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:45,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:22:45,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:22:45,035 INFO L87 Difference]: Start difference. First operand 151 states and 173 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-12-22 16:22:45,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:45,215 INFO L93 Difference]: Finished difference Result 229 states and 253 transitions. [2021-12-22 16:22:45,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 16:22:45,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2021-12-22 16:22:45,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:45,216 INFO L225 Difference]: With dead ends: 229 [2021-12-22 16:22:45,216 INFO L226 Difference]: Without dead ends: 229 [2021-12-22 16:22:45,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:22:45,217 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 299 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:45,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 138 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:22:45,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-22 16:22:45,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 197. [2021-12-22 16:22:45,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 149 states have (on average 1.5771812080536913) internal successors, (235), 196 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:45,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 235 transitions. [2021-12-22 16:22:45,221 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 235 transitions. Word has length 8 [2021-12-22 16:22:45,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:45,221 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 235 transitions. [2021-12-22 16:22:45,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-12-22 16:22:45,221 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 235 transitions. [2021-12-22 16:22:45,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-22 16:22:45,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:45,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:22:45,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 16:22:45,222 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:45,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:45,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1117776432, now seen corresponding path program 1 times [2021-12-22 16:22:45,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:45,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955003357] [2021-12-22 16:22:45,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:45,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:45,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:45,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955003357] [2021-12-22 16:22:45,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955003357] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:22:45,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:22:45,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:22:45,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124743482] [2021-12-22 16:22:45,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:22:45,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:22:45,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:45,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:22:45,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:22:45,246 INFO L87 Difference]: Start difference. First operand 197 states and 235 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:45,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:45,259 INFO L93 Difference]: Finished difference Result 237 states and 278 transitions. [2021-12-22 16:22:45,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:22:45,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-22 16:22:45,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:45,261 INFO L225 Difference]: With dead ends: 237 [2021-12-22 16:22:45,261 INFO L226 Difference]: Without dead ends: 237 [2021-12-22 16:22:45,261 INFO L932 BasicCegarLoop]: 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 [2021-12-22 16:22:45,262 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 105 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:45,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 211 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:22:45,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-22 16:22:45,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 207. [2021-12-22 16:22:45,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 159 states have (on average 1.5660377358490567) internal successors, (249), 206 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:45,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 249 transitions. [2021-12-22 16:22:45,266 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 249 transitions. Word has length 10 [2021-12-22 16:22:45,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:45,266 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 249 transitions. [2021-12-22 16:22:45,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:45,267 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 249 transitions. [2021-12-22 16:22:45,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-22 16:22:45,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:45,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:22:45,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 16:22:45,267 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:45,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:45,268 INFO L85 PathProgramCache]: Analyzing trace with hash 467003055, now seen corresponding path program 1 times [2021-12-22 16:22:45,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:45,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632857509] [2021-12-22 16:22:45,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:45,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:45,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:45,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632857509] [2021-12-22 16:22:45,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632857509] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:22:45,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:22:45,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:22:45,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863048205] [2021-12-22 16:22:45,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:22:45,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:22:45,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:45,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:22:45,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:22:45,309 INFO L87 Difference]: Start difference. First operand 207 states and 249 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:45,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:45,493 INFO L93 Difference]: Finished difference Result 213 states and 254 transitions. [2021-12-22 16:22:45,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 16:22:45,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 [2021-12-22 16:22:45,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:45,494 INFO L225 Difference]: With dead ends: 213 [2021-12-22 16:22:45,494 INFO L226 Difference]: Without dead ends: 213 [2021-12-22 16:22:45,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:22:45,495 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 100 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:45,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 356 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:22:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-12-22 16:22:45,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 206. [2021-12-22 16:22:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 159 states have (on average 1.5534591194968554) internal successors, (247), 205 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:45,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 247 transitions. [2021-12-22 16:22:45,498 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 247 transitions. Word has length 12 [2021-12-22 16:22:45,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:45,498 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 247 transitions. [2021-12-22 16:22:45,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:45,498 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 247 transitions. [2021-12-22 16:22:45,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-22 16:22:45,499 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:45,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:22:45,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 16:22:45,499 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:45,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:45,499 INFO L85 PathProgramCache]: Analyzing trace with hash 467003056, now seen corresponding path program 1 times [2021-12-22 16:22:45,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:45,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720612349] [2021-12-22 16:22:45,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:45,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:45,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:45,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720612349] [2021-12-22 16:22:45,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720612349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:22:45,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:22:45,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:22:45,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081955976] [2021-12-22 16:22:45,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:22:45,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:22:45,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:45,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:22:45,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:22:45,554 INFO L87 Difference]: Start difference. First operand 206 states and 247 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:45,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:45,745 INFO L93 Difference]: Finished difference Result 202 states and 240 transitions. [2021-12-22 16:22:45,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 16:22:45,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 [2021-12-22 16:22:45,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:45,746 INFO L225 Difference]: With dead ends: 202 [2021-12-22 16:22:45,746 INFO L226 Difference]: Without dead ends: 202 [2021-12-22 16:22:45,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-22 16:22:45,747 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 15 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:45,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 434 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:22:45,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-12-22 16:22:45,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 196. [2021-12-22 16:22:45,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 154 states have (on average 1.5194805194805194) internal successors, (234), 195 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:45,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 234 transitions. [2021-12-22 16:22:45,750 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 234 transitions. Word has length 12 [2021-12-22 16:22:45,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:45,752 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 234 transitions. [2021-12-22 16:22:45,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:45,753 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 234 transitions. [2021-12-22 16:22:45,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 16:22:45,753 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:45,753 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:22:45,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 16:22:45,754 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:45,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1270421215, now seen corresponding path program 1 times [2021-12-22 16:22:45,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:45,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451559873] [2021-12-22 16:22:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:45,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:22:45,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:45,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451559873] [2021-12-22 16:22:45,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451559873] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:22:45,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:22:45,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:22:45,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903941511] [2021-12-22 16:22:45,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:22:45,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:22:45,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:45,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:22:45,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:22:45,817 INFO L87 Difference]: Start difference. First operand 196 states and 234 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:45,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:45,916 INFO L93 Difference]: Finished difference Result 226 states and 249 transitions. [2021-12-22 16:22:45,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 16:22:45,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-22 16:22:45,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:45,918 INFO L225 Difference]: With dead ends: 226 [2021-12-22 16:22:45,918 INFO L226 Difference]: Without dead ends: 226 [2021-12-22 16:22:45,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:22:45,918 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 267 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:45,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 187 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:22:45,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-22 16:22:45,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 194. [2021-12-22 16:22:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 153 states have (on average 1.5032679738562091) internal successors, (230), 193 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 230 transitions. [2021-12-22 16:22:45,921 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 230 transitions. Word has length 21 [2021-12-22 16:22:45,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:45,921 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 230 transitions. [2021-12-22 16:22:45,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:45,922 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 230 transitions. [2021-12-22 16:22:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 16:22:45,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:45,922 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 16:22:45,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 16:22:45,922 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:45,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:45,923 INFO L85 PathProgramCache]: Analyzing trace with hash -697189136, now seen corresponding path program 1 times [2021-12-22 16:22:45,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:45,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365274954] [2021-12-22 16:22:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:45,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:46,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:46,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365274954] [2021-12-22 16:22:46,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365274954] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:22:46,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639714149] [2021-12-22 16:22:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:46,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:22:46,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:22:46,102 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:22:46,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 16:22:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:46,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-22 16:22:46,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:22:46,273 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 16:22:46,340 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-22 16:22:46,340 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-22 16:22:46,378 INFO L387 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 [2021-12-22 16:22:46,497 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 16:22:46,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-22 16:22:46,551 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 16:22:46,552 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-22 16:22:46,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:22:46,694 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-22 16:22:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:46,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:22:47,048 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:22:47,048 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2021-12-22 16:22:47,060 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:22:47,060 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2021-12-22 16:22:47,064 INFO L387 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 11 treesize of output 9 [2021-12-22 16:22:48,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:48,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639714149] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 16:22:48,023 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 16:22:48,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2021-12-22 16:22:48,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341575050] [2021-12-22 16:22:48,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 16:22:48,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-22 16:22:48,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:48,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-22 16:22:48,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=738, Unknown=9, NotChecked=0, Total=870 [2021-12-22 16:22:48,025 INFO L87 Difference]: Start difference. First operand 194 states and 230 transitions. Second operand has 30 states, 29 states have (on average 2.586206896551724) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:48,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:48,825 INFO L93 Difference]: Finished difference Result 389 states and 441 transitions. [2021-12-22 16:22:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 16:22:48,826 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.586206896551724) internal successors, (75), 30 states have internal predecessors, (75), 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 27 [2021-12-22 16:22:48,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:48,827 INFO L225 Difference]: With dead ends: 389 [2021-12-22 16:22:48,827 INFO L226 Difference]: Without dead ends: 389 [2021-12-22 16:22:48,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=279, Invalid=1194, Unknown=9, NotChecked=0, Total=1482 [2021-12-22 16:22:48,828 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 1127 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1005 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:48,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1127 Valid, 1280 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 883 Invalid, 0 Unknown, 1005 Unchecked, 0.5s Time] [2021-12-22 16:22:48,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-12-22 16:22:48,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 216. [2021-12-22 16:22:48,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 175 states have (on average 1.4685714285714286) internal successors, (257), 215 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:48,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 257 transitions. [2021-12-22 16:22:48,831 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 257 transitions. Word has length 27 [2021-12-22 16:22:48,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:48,832 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 257 transitions. [2021-12-22 16:22:48,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.586206896551724) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:48,832 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 257 transitions. [2021-12-22 16:22:48,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 16:22:48,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:48,832 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 16:22:48,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 16:22:49,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:22:49,033 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:49,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:49,034 INFO L85 PathProgramCache]: Analyzing trace with hash -697189135, now seen corresponding path program 1 times [2021-12-22 16:22:49,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:49,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495631011] [2021-12-22 16:22:49,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:49,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:49,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:49,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:49,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495631011] [2021-12-22 16:22:49,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495631011] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:22:49,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149897950] [2021-12-22 16:22:49,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:49,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:22:49,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:22:49,234 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:22:49,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 16:22:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:49,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-22 16:22:49,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:22:49,311 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 16:22:49,367 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 16:22:49,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-22 16:22:49,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-22 16:22:49,407 INFO L387 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 [2021-12-22 16:22:49,413 INFO L387 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 [2021-12-22 16:22:49,525 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-22 16:22:49,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-22 16:22:49,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-22 16:22:49,547 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 16:22:49,548 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-22 16:22:49,621 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-22 16:22:49,621 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-22 16:22:49,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-22 16:22:49,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:22:49,789 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 16:22:49,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:22:49,794 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:22:49,794 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2021-12-22 16:22:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:49,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:22:50,429 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:22:50,429 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 51 [2021-12-22 16:22:50,434 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:22:50,434 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 51 [2021-12-22 16:22:50,442 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:22:50,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 77 [2021-12-22 16:22:50,452 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:22:50,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 120 [2021-12-22 16:22:50,468 INFO L387 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 89 treesize of output 85 [2021-12-22 16:22:50,479 INFO L387 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 85 treesize of output 81 [2021-12-22 16:22:50,483 INFO L387 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 81 treesize of output 79 [2021-12-22 16:22:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:50,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149897950] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 16:22:50,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 16:22:50,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2021-12-22 16:22:50,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162350623] [2021-12-22 16:22:50,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 16:22:50,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-22 16:22:50,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:50,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-22 16:22:50,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=879, Unknown=11, NotChecked=0, Total=992 [2021-12-22 16:22:50,895 INFO L87 Difference]: Start difference. First operand 216 states and 257 transitions. Second operand has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:52,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:52,312 INFO L93 Difference]: Finished difference Result 438 states and 498 transitions. [2021-12-22 16:22:52,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-22 16:22:52,313 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-22 16:22:52,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:52,314 INFO L225 Difference]: With dead ends: 438 [2021-12-22 16:22:52,314 INFO L226 Difference]: Without dead ends: 438 [2021-12-22 16:22:52,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=418, Invalid=2327, Unknown=11, NotChecked=0, Total=2756 [2021-12-22 16:22:52,315 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 1033 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 536 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:52,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1033 Valid, 1416 Invalid, 2155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1525 Invalid, 0 Unknown, 536 Unchecked, 0.7s Time] [2021-12-22 16:22:52,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-12-22 16:22:52,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 216. [2021-12-22 16:22:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 175 states have (on average 1.4628571428571429) internal successors, (256), 215 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:52,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 256 transitions. [2021-12-22 16:22:52,319 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 256 transitions. Word has length 27 [2021-12-22 16:22:52,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:52,319 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 256 transitions. [2021-12-22 16:22:52,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:52,320 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 256 transitions. [2021-12-22 16:22:52,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 16:22:52,320 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:52,320 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 16:22:52,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-22 16:22:52,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-22 16:22:52,529 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:52,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:52,530 INFO L85 PathProgramCache]: Analyzing trace with hash 24881054, now seen corresponding path program 1 times [2021-12-22 16:22:52,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:52,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423005100] [2021-12-22 16:22:52,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:52,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:22:52,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:52,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423005100] [2021-12-22 16:22:52,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423005100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:22:52,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:22:52,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 16:22:52,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869185043] [2021-12-22 16:22:52,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:22:52,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:22:52,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:52,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:22:52,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:22:52,562 INFO L87 Difference]: Start difference. First operand 216 states and 256 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:52,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:52,569 INFO L93 Difference]: Finished difference Result 218 states and 258 transitions. [2021-12-22 16:22:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:22:52,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 29 [2021-12-22 16:22:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:52,570 INFO L225 Difference]: With dead ends: 218 [2021-12-22 16:22:52,570 INFO L226 Difference]: Without dead ends: 218 [2021-12-22 16:22:52,571 INFO L932 BasicCegarLoop]: 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 [2021-12-22 16:22:52,571 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 0 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:52,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:22:52,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-12-22 16:22:52,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-12-22 16:22:52,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 177 states have (on average 1.4576271186440677) internal successors, (258), 217 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:52,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 258 transitions. [2021-12-22 16:22:52,575 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 258 transitions. Word has length 29 [2021-12-22 16:22:52,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:52,575 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 258 transitions. [2021-12-22 16:22:52,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:52,575 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 258 transitions. [2021-12-22 16:22:52,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 16:22:52,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:52,579 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:22:52,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 16:22:52,579 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:52,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:52,579 INFO L85 PathProgramCache]: Analyzing trace with hash -197373836, now seen corresponding path program 1 times [2021-12-22 16:22:52,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:52,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268724977] [2021-12-22 16:22:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:52,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:52,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:22:52,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:52,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268724977] [2021-12-22 16:22:52,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268724977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:22:52,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:22:52,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:22:52,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410294730] [2021-12-22 16:22:52,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:22:52,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:22:52,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:52,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:22:52,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:22:52,624 INFO L87 Difference]: Start difference. First operand 218 states and 258 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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) [2021-12-22 16:22:52,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:52,792 INFO L93 Difference]: Finished difference Result 243 states and 288 transitions. [2021-12-22 16:22:52,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:22:52,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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) Word has length 32 [2021-12-22 16:22:52,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:52,794 INFO L225 Difference]: With dead ends: 243 [2021-12-22 16:22:52,794 INFO L226 Difference]: Without dead ends: 243 [2021-12-22 16:22:52,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:22:52,794 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 109 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:52,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 345 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:22:52,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-12-22 16:22:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 217. [2021-12-22 16:22:52,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 177 states have (on average 1.4519774011299436) internal successors, (257), 216 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:52,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 257 transitions. [2021-12-22 16:22:52,797 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 257 transitions. Word has length 32 [2021-12-22 16:22:52,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:52,797 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 257 transitions. [2021-12-22 16:22:52,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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) [2021-12-22 16:22:52,797 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 257 transitions. [2021-12-22 16:22:52,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 16:22:52,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:52,798 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:22:52,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 16:22:52,798 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:52,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:52,799 INFO L85 PathProgramCache]: Analyzing trace with hash -197373835, now seen corresponding path program 1 times [2021-12-22 16:22:52,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:52,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305832073] [2021-12-22 16:22:52,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:52,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:52,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:52,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305832073] [2021-12-22 16:22:52,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305832073] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:22:52,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703393514] [2021-12-22 16:22:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:52,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:22:52,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:22:52,998 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:22:52,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 16:22:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:53,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-22 16:22:53,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:22:53,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 16:22:53,136 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 16:22:53,136 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-22 16:22:53,166 INFO L387 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 [2021-12-22 16:22:53,173 INFO L387 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 [2021-12-22 16:22:53,210 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-12-22 16:22:53,247 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-22 16:22:53,273 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-22 16:22:53,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-12-22 16:22:53,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:22:53,444 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:22:53,444 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 17 [2021-12-22 16:22:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:53,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:22:53,558 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:22:53,559 INFO L387 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 36 [2021-12-22 16:22:53,719 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_74| Int) (v_ArrVal_423 (Array Int Int))) (or (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_423) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_74|)) (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_74| |c_ULTIMATE.start_main_~head~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1.offset_74| 0))) is different from false [2021-12-22 16:22:53,770 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_74| Int) (v_ArrVal_423 (Array Int Int))) (or (<= 0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_423) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_74|)) (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_74| |c_ULTIMATE.start_main_~head~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1.offset_74| 0))) is different from false [2021-12-22 16:22:53,785 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_74| Int) (v_ArrVal_423 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_main_~x~0#1.offset_74| |c_ULTIMATE.start_main_~head~0#1.offset|)) (< |v_ULTIMATE.start_main_~x~0#1.offset_74| 0) (<= 0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_423) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_74|)))) is different from false [2021-12-22 16:22:53,805 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:22:53,806 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-12-22 16:22:53,813 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:22:53,813 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2021-12-22 16:22:53,816 INFO L387 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 9 treesize of output 7 [2021-12-22 16:22:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:54,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703393514] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 16:22:54,093 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 16:22:54,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 40 [2021-12-22 16:22:54,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057623356] [2021-12-22 16:22:54,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 16:22:54,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-22 16:22:54,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:54,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-22 16:22:54,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1260, Unknown=3, NotChecked=222, Total=1640 [2021-12-22 16:22:54,095 INFO L87 Difference]: Start difference. First operand 217 states and 257 transitions. Second operand has 41 states, 40 states have (on average 2.35) internal successors, (94), 41 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:55,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:55,529 INFO L93 Difference]: Finished difference Result 322 states and 372 transitions. [2021-12-22 16:22:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-22 16:22:55,529 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.35) internal successors, (94), 41 states have internal predecessors, (94), 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 32 [2021-12-22 16:22:55,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:55,530 INFO L225 Difference]: With dead ends: 322 [2021-12-22 16:22:55,530 INFO L226 Difference]: Without dead ends: 322 [2021-12-22 16:22:55,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=557, Invalid=3234, Unknown=3, NotChecked=366, Total=4160 [2021-12-22 16:22:55,532 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 403 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 1646 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1061 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:55,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 2140 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1646 Invalid, 0 Unknown, 1061 Unchecked, 0.7s Time] [2021-12-22 16:22:55,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-12-22 16:22:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 208. [2021-12-22 16:22:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 174 states have (on average 1.4137931034482758) internal successors, (246), 207 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 246 transitions. [2021-12-22 16:22:55,535 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 246 transitions. Word has length 32 [2021-12-22 16:22:55,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:55,537 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 246 transitions. [2021-12-22 16:22:55,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.35) internal successors, (94), 41 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:55,537 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 246 transitions. [2021-12-22 16:22:55,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 16:22:55,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:55,538 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:22:55,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 16:22:55,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:22:55,754 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:55,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:55,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1018847574, now seen corresponding path program 1 times [2021-12-22 16:22:55,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:55,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535562027] [2021-12-22 16:22:55,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:55,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:22:55,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:55,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535562027] [2021-12-22 16:22:55,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535562027] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:22:55,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:22:55,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 16:22:55,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126761772] [2021-12-22 16:22:55,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:22:55,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 16:22:55,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:55,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 16:22:55,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 16:22:55,858 INFO L87 Difference]: Start difference. First operand 208 states and 246 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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) [2021-12-22 16:22:56,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:56,060 INFO L93 Difference]: Finished difference Result 224 states and 264 transitions. [2021-12-22 16:22:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 16:22:56,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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) Word has length 32 [2021-12-22 16:22:56,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:56,061 INFO L225 Difference]: With dead ends: 224 [2021-12-22 16:22:56,061 INFO L226 Difference]: Without dead ends: 224 [2021-12-22 16:22:56,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-22 16:22:56,061 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 31 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:56,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 547 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:22:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-22 16:22:56,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 216. [2021-12-22 16:22:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 182 states have (on average 1.3956043956043955) internal successors, (254), 215 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:56,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 254 transitions. [2021-12-22 16:22:56,064 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 254 transitions. Word has length 32 [2021-12-22 16:22:56,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:56,065 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 254 transitions. [2021-12-22 16:22:56,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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) [2021-12-22 16:22:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 254 transitions. [2021-12-22 16:22:56,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 16:22:56,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:56,065 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:22:56,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 16:22:56,065 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:56,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:56,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1018907156, now seen corresponding path program 1 times [2021-12-22 16:22:56,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:56,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988765152] [2021-12-22 16:22:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:56,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:22:56,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:56,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988765152] [2021-12-22 16:22:56,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988765152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:22:56,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:22:56,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:22:56,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043175949] [2021-12-22 16:22:56,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:22:56,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:22:56,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:56,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:22:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:22:56,146 INFO L87 Difference]: Start difference. First operand 216 states and 254 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 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) [2021-12-22 16:22:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:56,187 INFO L93 Difference]: Finished difference Result 214 states and 249 transitions. [2021-12-22 16:22:56,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:22:56,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 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) Word has length 32 [2021-12-22 16:22:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:56,190 INFO L225 Difference]: With dead ends: 214 [2021-12-22 16:22:56,190 INFO L226 Difference]: Without dead ends: 214 [2021-12-22 16:22:56,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:22:56,198 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 67 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:56,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 152 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:22:56,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-12-22 16:22:56,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2021-12-22 16:22:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 182 states have (on average 1.3681318681318682) internal successors, (249), 212 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:56,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 249 transitions. [2021-12-22 16:22:56,206 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 249 transitions. Word has length 32 [2021-12-22 16:22:56,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:56,207 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 249 transitions. [2021-12-22 16:22:56,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 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) [2021-12-22 16:22:56,207 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 249 transitions. [2021-12-22 16:22:56,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 16:22:56,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:56,208 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:22:56,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 16:22:56,208 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:56,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:56,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1018907157, now seen corresponding path program 1 times [2021-12-22 16:22:56,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:56,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928330510] [2021-12-22 16:22:56,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:56,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:22:56,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:56,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928330510] [2021-12-22 16:22:56,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928330510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:22:56,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:22:56,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 16:22:56,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10878592] [2021-12-22 16:22:56,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:22:56,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 16:22:56,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:56,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 16:22:56,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:22:56,298 INFO L87 Difference]: Start difference. First operand 213 states and 249 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 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) [2021-12-22 16:22:56,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:56,350 INFO L93 Difference]: Finished difference Result 210 states and 244 transitions. [2021-12-22 16:22:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 16:22:56,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 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) Word has length 32 [2021-12-22 16:22:56,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:56,360 INFO L225 Difference]: With dead ends: 210 [2021-12-22 16:22:56,360 INFO L226 Difference]: Without dead ends: 210 [2021-12-22 16:22:56,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 16:22:56,362 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 72 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:56,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 136 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 16:22:56,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-12-22 16:22:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-12-22 16:22:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 182 states have (on average 1.3406593406593406) internal successors, (244), 209 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:56,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 244 transitions. [2021-12-22 16:22:56,376 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 244 transitions. Word has length 32 [2021-12-22 16:22:56,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:56,376 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 244 transitions. [2021-12-22 16:22:56,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 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) [2021-12-22 16:22:56,377 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 244 transitions. [2021-12-22 16:22:56,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 16:22:56,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:56,377 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:22:56,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 16:22:56,377 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:56,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:56,378 INFO L85 PathProgramCache]: Analyzing trace with hash 948343841, now seen corresponding path program 1 times [2021-12-22 16:22:56,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:56,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357438232] [2021-12-22 16:22:56,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:56,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:22:56,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:56,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357438232] [2021-12-22 16:22:56,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357438232] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:22:56,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:22:56,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:22:56,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764296318] [2021-12-22 16:22:56,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:22:56,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:22:56,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:56,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:22:56,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 16:22:56,419 INFO L87 Difference]: Start difference. First operand 210 states and 244 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:56,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:56,621 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2021-12-22 16:22:56,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:22:56,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-22 16:22:56,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:56,622 INFO L225 Difference]: With dead ends: 230 [2021-12-22 16:22:56,623 INFO L226 Difference]: Without dead ends: 230 [2021-12-22 16:22:56,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-22 16:22:56,623 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 92 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:56,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 321 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 16:22:56,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-12-22 16:22:56,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 216. [2021-12-22 16:22:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 188 states have (on average 1.3457446808510638) internal successors, (253), 215 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:56,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 253 transitions. [2021-12-22 16:22:56,627 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 253 transitions. Word has length 36 [2021-12-22 16:22:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:56,627 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 253 transitions. [2021-12-22 16:22:56,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:56,627 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 253 transitions. [2021-12-22 16:22:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 16:22:56,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:56,627 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 16:22:56,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 16:22:56,628 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:56,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:56,628 INFO L85 PathProgramCache]: Analyzing trace with hash 948343842, now seen corresponding path program 1 times [2021-12-22 16:22:56,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:56,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189703017] [2021-12-22 16:22:56,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:56,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:56,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:56,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:56,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189703017] [2021-12-22 16:22:56,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189703017] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:22:56,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077991563] [2021-12-22 16:22:56,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:56,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:22:56,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:22:56,850 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:22:56,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 16:22:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:56,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 16:22:56,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:22:57,046 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2021-12-22 16:22:57,049 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-12-22 16:22:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:22:57,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 16:22:57,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077991563] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:22:57,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 16:22:57,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2021-12-22 16:22:57,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835525600] [2021-12-22 16:22:57,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:22:57,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 16:22:57,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:22:57,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 16:22:57,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-12-22 16:22:57,116 INFO L87 Difference]: Start difference. First operand 216 states and 253 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:57,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:22:57,300 INFO L93 Difference]: Finished difference Result 225 states and 260 transitions. [2021-12-22 16:22:57,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 16:22:57,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-22 16:22:57,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:22:57,302 INFO L225 Difference]: With dead ends: 225 [2021-12-22 16:22:57,302 INFO L226 Difference]: Without dead ends: 225 [2021-12-22 16:22:57,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-12-22 16:22:57,305 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 53 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 16:22:57,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 389 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 16:22:57,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-12-22 16:22:57,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 214. [2021-12-22 16:22:57,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 188 states have (on average 1.3191489361702127) internal successors, (248), 213 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:57,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 248 transitions. [2021-12-22 16:22:57,310 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 248 transitions. Word has length 36 [2021-12-22 16:22:57,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:22:57,310 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 248 transitions. [2021-12-22 16:22:57,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 16:22:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 248 transitions. [2021-12-22 16:22:57,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-22 16:22:57,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:22:57,311 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2021-12-22 16:22:57,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 16:22:57,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-22 16:22:57,527 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 64 more)] === [2021-12-22 16:22:57,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:22:57,528 INFO L85 PathProgramCache]: Analyzing trace with hash -468812102, now seen corresponding path program 1 times [2021-12-22 16:22:57,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:22:57,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201058865] [2021-12-22 16:22:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:57,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:22:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:57,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:22:57,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201058865] [2021-12-22 16:22:57,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201058865] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 16:22:57,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350113530] [2021-12-22 16:22:57,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:22:57,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 16:22:57,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:22:57,730 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 16:22:57,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 16:22:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:22:57,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-22 16:22:57,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 16:22:57,818 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 16:22:57,885 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 16:22:57,885 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-22 16:22:57,917 INFO L387 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 [2021-12-22 16:22:57,923 INFO L387 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 [2021-12-22 16:22:58,023 INFO L353 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-22 16:22:58,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-12-22 16:22:58,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:22:58,032 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2021-12-22 16:22:58,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:22:58,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 16:22:58,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:22:58,122 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-22 16:22:58,123 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 70 [2021-12-22 16:22:58,131 INFO L353 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-12-22 16:22:58,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 58 [2021-12-22 16:22:58,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:22:58,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:22:58,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:22:58,538 INFO L353 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-12-22 16:22:58,539 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 42 [2021-12-22 16:22:58,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:22:58,545 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-22 16:22:58,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 22 [2021-12-22 16:22:58,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:22:58,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 16:23:05,359 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:23:05,360 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 32200 treesize of output 29517 [2021-12-22 16:23:06,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:23:06,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-22 16:23:07,771 INFO L353 Elim1Store]: treesize reduction 624, result has 48.3 percent of original size [2021-12-22 16:23:07,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 15 new quantified variables, introduced 92 case distinctions, treesize of input 643724 treesize of output 622861 [2021-12-22 16:23:45,526 WARN L227 SmtUtils]: Spent 37.75s on a formula simplification. DAG size of input: 1306 DAG size of output: 1266 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-22 16:23:45,643 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 16:23:45,644 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 517187 treesize of output 517023