./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id_o1000.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/id_o1000.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ac5ce2c5b306e431b6746a0cb1bbdfcd1ec9c3d54097bd6037af4480ff2bd07 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 04:35:01,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 04:35:01,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 04:35:01,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 04:35:01,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 04:35:01,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 04:35:01,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 04:35:01,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 04:35:01,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 04:35:01,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 04:35:01,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 04:35:01,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 04:35:01,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 04:35:01,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 04:35:01,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 04:35:01,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 04:35:01,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 04:35:01,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 04:35:01,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 04:35:01,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 04:35:01,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 04:35:01,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 04:35:01,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 04:35:01,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 04:35:01,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 04:35:01,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 04:35:01,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 04:35:01,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 04:35:01,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 04:35:01,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 04:35:01,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 04:35:01,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 04:35:01,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 04:35:01,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 04:35:01,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 04:35:01,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 04:35:01,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 04:35:01,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 04:35:01,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 04:35:01,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 04:35:01,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 04:35:01,523 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 04:35:01,544 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 04:35:01,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 04:35:01,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 04:35:01,545 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 04:35:01,546 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 04:35:01,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 04:35:01,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 04:35:01,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 04:35:01,547 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 04:35:01,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 04:35:01,548 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 04:35:01,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 04:35:01,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 04:35:01,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 04:35:01,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 04:35:01,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 04:35:01,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 04:35:01,549 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 04:35:01,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 04:35:01,549 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 04:35:01,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 04:35:01,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 04:35:01,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 04:35:01,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 04:35:01,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 04:35:01,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 04:35:01,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 04:35:01,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 04:35:01,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 04:35:01,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 04:35:01,551 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 04:35:01,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 04:35:01,551 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 04:35:01,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 04:35:01,551 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 04:35:01,552 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ac5ce2c5b306e431b6746a0cb1bbdfcd1ec9c3d54097bd6037af4480ff2bd07 [2023-02-18 04:35:01,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 04:35:01,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 04:35:01,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 04:35:01,793 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 04:35:01,793 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 04:35:01,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_o1000.c [2023-02-18 04:35:02,836 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 04:35:02,974 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 04:35:02,974 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_o1000.c [2023-02-18 04:35:02,979 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c95b60461/d27c122e66c6424ea08c8fe43395dc4b/FLAGd5e3d0693 [2023-02-18 04:35:02,997 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c95b60461/d27c122e66c6424ea08c8fe43395dc4b [2023-02-18 04:35:02,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 04:35:03,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 04:35:03,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 04:35:03,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 04:35:03,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 04:35:03,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:35:02" (1/1) ... [2023-02-18 04:35:03,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a744fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:35:03, skipping insertion in model container [2023-02-18 04:35:03,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:35:02" (1/1) ... [2023-02-18 04:35:03,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 04:35:03,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 04:35:03,140 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_o1000.c[520,533] [2023-02-18 04:35:03,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 04:35:03,153 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 04:35:03,164 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_o1000.c[520,533] [2023-02-18 04:35:03,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 04:35:03,173 INFO L208 MainTranslator]: Completed translation [2023-02-18 04:35:03,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:35:03 WrapperNode [2023-02-18 04:35:03,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 04:35:03,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 04:35:03,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 04:35:03,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 04:35:03,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:35:03" (1/1) ... [2023-02-18 04:35:03,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:35:03" (1/1) ... [2023-02-18 04:35:03,196 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-02-18 04:35:03,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 04:35:03,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 04:35:03,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 04:35:03,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 04:35:03,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:35:03" (1/1) ... [2023-02-18 04:35:03,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:35:03" (1/1) ... [2023-02-18 04:35:03,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:35:03" (1/1) ... [2023-02-18 04:35:03,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:35:03" (1/1) ... [2023-02-18 04:35:03,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:35:03" (1/1) ... [2023-02-18 04:35:03,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:35:03" (1/1) ... [2023-02-18 04:35:03,208 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:35:03" (1/1) ... [2023-02-18 04:35:03,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:35:03" (1/1) ... [2023-02-18 04:35:03,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 04:35:03,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 04:35:03,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 04:35:03,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 04:35:03,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:35:03" (1/1) ... [2023-02-18 04:35:03,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 04:35:03,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:35:03,270 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) [2023-02-18 04:35:03,314 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 [2023-02-18 04:35:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 04:35:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 04:35:03,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 04:35:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 04:35:03,347 INFO L130 BoogieDeclarations]: Found specification of procedure id [2023-02-18 04:35:03,348 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2023-02-18 04:35:03,394 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 04:35:03,396 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 04:35:03,496 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 04:35:03,501 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 04:35:03,502 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-18 04:35:03,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:35:03 BoogieIcfgContainer [2023-02-18 04:35:03,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 04:35:03,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 04:35:03,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 04:35:03,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 04:35:03,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 04:35:02" (1/3) ... [2023-02-18 04:35:03,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294e7c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:35:03, skipping insertion in model container [2023-02-18 04:35:03,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:35:03" (2/3) ... [2023-02-18 04:35:03,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294e7c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:35:03, skipping insertion in model container [2023-02-18 04:35:03,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:35:03" (3/3) ... [2023-02-18 04:35:03,510 INFO L112 eAbstractionObserver]: Analyzing ICFG id_o1000.c [2023-02-18 04:35:03,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 04:35:03,523 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 04:35:03,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 04:35:03,565 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3482bc35, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 04:35:03,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 04:35:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 04:35:03,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 04:35:03,573 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:35:03,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:35:03,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:35:03,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:35:03,578 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2023-02-18 04:35:03,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:35:03,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347132005] [2023-02-18 04:35:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:35:03,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:35:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:03,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:35:03,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:35:03,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347132005] [2023-02-18 04:35:03,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347132005] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:35:03,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:35:03,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 04:35:03,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022961106] [2023-02-18 04:35:03,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:35:03,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 04:35:03,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:35:03,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 04:35:03,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:35:03,868 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 04:35:03,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:35:03,913 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2023-02-18 04:35:03,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 04:35:03,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-02-18 04:35:03,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:35:03,919 INFO L225 Difference]: With dead ends: 28 [2023-02-18 04:35:03,919 INFO L226 Difference]: Without dead ends: 15 [2023-02-18 04:35:03,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:35:03,925 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:35:03,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:35:03,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-02-18 04:35:03,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-02-18 04:35:03,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 04:35:03,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-02-18 04:35:03,950 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2023-02-18 04:35:03,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:35:03,951 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-02-18 04:35:03,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 04:35:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-02-18 04:35:03,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 04:35:03,952 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:35:03,952 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:35:03,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 04:35:03,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:35:03,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:35:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2023-02-18 04:35:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:35:03,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597244859] [2023-02-18 04:35:03,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:35:03,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:35:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:04,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:04,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 04:35:04,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:35:04,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597244859] [2023-02-18 04:35:04,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597244859] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:35:04,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650412457] [2023-02-18 04:35:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:35:04,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:35:04,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:35:04,168 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) [2023-02-18 04:35:04,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 04:35:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:04,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 04:35:04,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:35:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 04:35:04,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:35:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 04:35:04,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650412457] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:35:04,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:35:04,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-18 04:35:04,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530012229] [2023-02-18 04:35:04,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:35:04,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 04:35:04,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:35:04,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 04:35:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-18 04:35:04,412 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 04:35:04,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:35:04,459 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2023-02-18 04:35:04,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 04:35:04,460 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 16 [2023-02-18 04:35:04,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:35:04,460 INFO L225 Difference]: With dead ends: 27 [2023-02-18 04:35:04,461 INFO L226 Difference]: Without dead ends: 21 [2023-02-18 04:35:04,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-18 04:35:04,462 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:35:04,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:35:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-18 04:35:04,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-02-18 04:35:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-18 04:35:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-02-18 04:35:04,466 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2023-02-18 04:35:04,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:35:04,466 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-02-18 04:35:04,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 04:35:04,466 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-02-18 04:35:04,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 04:35:04,467 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:35:04,467 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:35:04,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 04:35:04,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:35:04,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:35:04,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:35:04,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 2 times [2023-02-18 04:35:04,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:35:04,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628694405] [2023-02-18 04:35:04,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:35:04,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:35:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:04,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:04,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:04,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:04,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 04:35:04,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:35:04,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628694405] [2023-02-18 04:35:04,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628694405] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:35:04,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861298633] [2023-02-18 04:35:04,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:35:04,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:35:04,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:35:04,944 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) [2023-02-18 04:35:04,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 04:35:04,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 04:35:04,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:35:04,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-18 04:35:04,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:35:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 04:35:05,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:35:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 04:35:05,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861298633] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:35:05,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:35:05,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2023-02-18 04:35:05,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635110956] [2023-02-18 04:35:05,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:35:05,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-18 04:35:05,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:35:05,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-18 04:35:05,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2023-02-18 04:35:05,154 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-18 04:35:05,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:35:05,279 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-02-18 04:35:05,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-18 04:35:05,280 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) Word has length 28 [2023-02-18 04:35:05,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:35:05,280 INFO L225 Difference]: With dead ends: 39 [2023-02-18 04:35:05,280 INFO L226 Difference]: Without dead ends: 33 [2023-02-18 04:35:05,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2023-02-18 04:35:05,292 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:35:05,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:35:05,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-18 04:35:05,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-02-18 04:35:05,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-18 04:35:05,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2023-02-18 04:35:05,297 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2023-02-18 04:35:05,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:35:05,297 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2023-02-18 04:35:05,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 13 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-18 04:35:05,298 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2023-02-18 04:35:05,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-18 04:35:05,299 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:35:05,299 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:35:05,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 04:35:05,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-18 04:35:05,504 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:35:05,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:35:05,506 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 3 times [2023-02-18 04:35:05,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:35:05,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803558901] [2023-02-18 04:35:05,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:35:05,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:35:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:05,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:05,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:05,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:05,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:05,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:05,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:05,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-02-18 04:35:05,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:35:05,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803558901] [2023-02-18 04:35:05,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803558901] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:35:05,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874491288] [2023-02-18 04:35:05,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 04:35:05,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:35:05,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:35:05,933 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) [2023-02-18 04:35:05,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 04:35:05,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-02-18 04:35:05,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:35:05,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 36 conjunts are in the unsatisfiable core [2023-02-18 04:35:06,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:35:06,108 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-02-18 04:35:06,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:35:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-02-18 04:35:06,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874491288] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:35:06,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:35:06,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2023-02-18 04:35:06,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191031488] [2023-02-18 04:35:06,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:35:06,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-18 04:35:06,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:35:06,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-18 04:35:06,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2023-02-18 04:35:06,511 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-02-18 04:35:07,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:35:07,570 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2023-02-18 04:35:07,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-18 04:35:07,572 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 52 [2023-02-18 04:35:07,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:35:07,573 INFO L225 Difference]: With dead ends: 63 [2023-02-18 04:35:07,573 INFO L226 Difference]: Without dead ends: 57 [2023-02-18 04:35:07,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 94 SyntacticMatches, 8 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=386, Invalid=1966, Unknown=0, NotChecked=0, Total=2352 [2023-02-18 04:35:07,575 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:35:07,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 353 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:35:07,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-18 04:35:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-02-18 04:35:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2023-02-18 04:35:07,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2023-02-18 04:35:07,589 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 52 [2023-02-18 04:35:07,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:35:07,590 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2023-02-18 04:35:07,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.162162162162162) internal successors, (43), 21 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-02-18 04:35:07,591 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2023-02-18 04:35:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-02-18 04:35:07,608 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:35:07,609 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:35:07,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-18 04:35:07,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:35:07,815 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:35:07,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:35:07,816 INFO L85 PathProgramCache]: Analyzing trace with hash 415287702, now seen corresponding path program 4 times [2023-02-18 04:35:07,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:35:07,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592956254] [2023-02-18 04:35:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:35:07,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:35:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:08,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:08,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:08,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:08,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:08,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:08,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:08,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:08,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:09,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:09,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:09,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:09,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:09,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:09,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:35:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:35:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-02-18 04:35:09,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:35:09,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592956254] [2023-02-18 04:35:09,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592956254] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:35:09,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106275590] [2023-02-18 04:35:09,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 04:35:09,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:35:09,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:35:09,386 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) [2023-02-18 04:35:09,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 04:35:09,436 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 04:35:09,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:35:09,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 68 conjunts are in the unsatisfiable core [2023-02-18 04:35:09,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:35:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-02-18 04:35:09,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:35:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-02-18 04:35:11,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106275590] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:35:11,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:35:11,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 69 [2023-02-18 04:35:11,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844549875] [2023-02-18 04:35:11,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:35:11,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-02-18 04:35:11,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:35:11,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-02-18 04:35:11,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=620, Invalid=4072, Unknown=0, NotChecked=0, Total=4692 [2023-02-18 04:35:11,247 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 37 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) [2023-02-18 04:35:59,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:35:59,450 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2023-02-18 04:35:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-02-18 04:35:59,450 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 37 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) Word has length 100 [2023-02-18 04:35:59,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:35:59,452 INFO L225 Difference]: With dead ends: 111 [2023-02-18 04:35:59,452 INFO L226 Difference]: Without dead ends: 105 [2023-02-18 04:35:59,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 182 SyntacticMatches, 16 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 49.3s TimeCoverageRelationStatistics Valid=1530, Invalid=7781, Unknown=1, NotChecked=0, Total=9312 [2023-02-18 04:35:59,455 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-18 04:35:59,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 985 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-18 04:35:59,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-02-18 04:35:59,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-02-18 04:35:59,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 71 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (33), 32 states have call predecessors, (33), 2 states have call successors, (33) [2023-02-18 04:35:59,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2023-02-18 04:35:59,464 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 100 [2023-02-18 04:35:59,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:35:59,464 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2023-02-18 04:35:59,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 37 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 32 states have return successors, (32), 32 states have call predecessors, (32), 1 states have call successors, (32) [2023-02-18 04:35:59,464 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2023-02-18 04:35:59,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-02-18 04:35:59,467 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:35:59,467 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:35:59,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-18 04:35:59,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:35:59,672 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:35:59,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:35:59,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1665704854, now seen corresponding path program 5 times [2023-02-18 04:35:59,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:35:59,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025971145] [2023-02-18 04:35:59,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:35:59,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:35:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:00,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:00,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:01,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:01,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:01,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:02,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:02,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:02,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:03,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:03,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:04,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:04,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:04,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:04,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:04,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:04,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:05,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:05,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:05,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:05,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:05,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:05,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:05,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:05,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:05,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:06,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:06,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:06,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:06,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:06,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:36:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:36:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2023-02-18 04:36:06,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:36:06,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025971145] [2023-02-18 04:36:06,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025971145] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:36:06,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813491735] [2023-02-18 04:36:06,474 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 04:36:06,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:36:06,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:36:06,475 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) [2023-02-18 04:36:06,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 04:36:16,933 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2023-02-18 04:36:16,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:36:16,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 132 conjunts are in the unsatisfiable core [2023-02-18 04:36:16,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:36:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2023-02-18 04:36:17,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:36:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2023-02-18 04:36:21,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813491735] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:36:21,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:36:21,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 133 [2023-02-18 04:36:21,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687281777] [2023-02-18 04:36:21,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:36:21,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2023-02-18 04:36:21,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:36:21,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2023-02-18 04:36:21,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2252, Invalid=15304, Unknown=0, NotChecked=0, Total=17556 [2023-02-18 04:36:21,928 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 133 states, 133 states have (on average 1.0451127819548873) internal successors, (139), 69 states have internal predecessors, (139), 1 states have call successors, (2), 1 states have call predecessors, (2), 64 states have return successors, (64), 64 states have call predecessors, (64), 1 states have call successors, (64) [2023-02-18 04:41:09,629 WARN L837 $PredicateComparison]: unable to prove that (and (not (= (mod (+ |c_id_#res| 14) 4294967296) 1000)) (not (= 1000 (mod (+ |c_id_#res| 13) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 2) 4294967296))) (not (= (mod (+ |c_id_#res| 25) 4294967296) 1000)) (not (= (mod (+ |c_id_#res| 7) 4294967296) 1000)) (not (= (mod (+ |c_id_#res| 21) 4294967296) 1000)) (not (= (mod (+ |c_id_#res| 18) 4294967296) 1000)) (not (= (mod (+ |c_id_#res| 16) 4294967296) 1000)) (not (= (mod (+ |c_id_#res| 17) 4294967296) 1000)) (not (= 1000 (mod (+ |c_id_#res| 8) 4294967296))) (not (= (mod (+ |c_id_#res| 12) 4294967296) 1000)) (not (= (mod (+ |c_id_#res| 11) 4294967296) 1000)) (not (= (mod (+ |c_id_#res| 29) 4294967296) 1000)) (not (= (mod (+ |c_id_#res| 1) 4294967296) 1000)) (not (= 1000 (mod (+ |c_id_#res| 26) 4294967296))) (not (= (mod (+ |c_id_#res| 23) 4294967296) 1000)) (not (= 1000 (mod (+ |c_id_#res| 24) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 19) 4294967296))) (not (= 1000 (mod (+ |c_id_#res| 9) 4294967296))) (not (= (mod (+ |c_id_#res| 15) 4294967296) 1000)) (not (= (mod (+ |c_id_#res| 28) 4294967296) 1000)) (not (= (mod (+ |c_id_#res| 3) 4294967296) 1000)) (not (= 1000 (mod (+ |c_id_#res| 6) 4294967296))) (not (= (mod |c_id_#res| 4294967296) 1000)) (not (= 1000 (mod (+ |c_id_#res| 22) 4294967296))) (not (= (mod (+ |c_id_#res| 27) 4294967296) 1000)) (not (= (mod (+ |c_id_#res| 20) 4294967296) 1000)) (not (= 1000 (mod (+ |c_id_#res| 4) 4294967296))) (not (= (mod (+ |c_id_#res| 10) 4294967296) 1000)) (not (= (mod (+ |c_id_#res| 5) 4294967296) 1000))) is different from false [2023-02-18 04:47:07,446 WARN L837 $PredicateComparison]: unable to prove that (and (not (= 1000 (mod (+ |c_id_#t~ret4| 27) 4294967296))) (not (= 1000 (mod (+ 22 |c_id_#t~ret4|) 4294967296))) (not (= (mod (+ 26 |c_id_#t~ret4|) 4294967296) 1000)) (not (= 1000 (mod (+ 7 |c_id_#t~ret4|) 4294967296))) (not (= 1000 (mod (+ 8 |c_id_#t~ret4|) 4294967296))) (not (= (mod (+ 5 |c_id_#t~ret4|) 4294967296) 1000)) (not (= 1000 (mod (+ 12 |c_id_#t~ret4|) 4294967296))) (not (= (mod (+ 3 |c_id_#t~ret4|) 4294967296) 1000)) (not (= (mod (+ |c_id_#t~ret4| 24) 4294967296) 1000)) (not (= 1000 (mod (+ 25 |c_id_#t~ret4|) 4294967296))) (not (= (mod (+ 20 |c_id_#t~ret4|) 4294967296) 1000)) (not (= (mod (+ 14 |c_id_#t~ret4|) 4294967296) 1000)) (not (= (mod (+ 10 |c_id_#t~ret4|) 4294967296) 1000)) (not (= (mod (+ 6 |c_id_#t~ret4|) 4294967296) 1000)) (not (= (mod (+ 15 |c_id_#t~ret4|) 4294967296) 1000)) (not (= (mod (+ 23 |c_id_#t~ret4|) 4294967296) 1000)) (not (= 1000 (mod (+ |c_id_#t~ret4| 1) 4294967296))) (not (= (mod (+ 4 |c_id_#t~ret4|) 4294967296) 1000)) (not (= 1000 (mod (+ 11 |c_id_#t~ret4|) 4294967296))) (not (= (mod (+ 21 |c_id_#t~ret4|) 4294967296) 1000)) (not (= (mod (+ 19 |c_id_#t~ret4|) 4294967296) 1000)) (not (= (mod (+ 16 |c_id_#t~ret4|) 4294967296) 1000)) (not (= (mod (+ 2 |c_id_#t~ret4|) 4294967296) 1000)) (not (= (mod (+ 17 |c_id_#t~ret4|) 4294967296) 1000)) (not (= (mod (+ 13 |c_id_#t~ret4|) 4294967296) 1000)) (not (= (mod (+ 9 |c_id_#t~ret4|) 4294967296) 1000)) (not (= 1000 (mod (+ 18 |c_id_#t~ret4|) 4294967296)))) is different from false