./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/sum.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/reducercommutativity/sum.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c788c1819bdb49f70cf486a187bd014d3d2cd0616eddb169336e33d9a4226f9c --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 09:42:10,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 09:42:10,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 09:42:10,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 09:42:10,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 09:42:10,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 09:42:10,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 09:42:10,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 09:42:10,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 09:42:10,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 09:42:10,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 09:42:10,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 09:42:10,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 09:42:10,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 09:42:10,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 09:42:10,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 09:42:10,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 09:42:10,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 09:42:10,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 09:42:10,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 09:42:10,393 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 09:42:10,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 09:42:10,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 09:42:10,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 09:42:10,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 09:42:10,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 09:42:10,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 09:42:10,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 09:42:10,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 09:42:10,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 09:42:10,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 09:42:10,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 09:42:10,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 09:42:10,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 09:42:10,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 09:42:10,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 09:42:10,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 09:42:10,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 09:42:10,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 09:42:10,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 09:42:10,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 09:42:10,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 09:42:10,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 09:42:10,438 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 09:42:10,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 09:42:10,439 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 09:42:10,439 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 09:42:10,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 09:42:10,440 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 09:42:10,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 09:42:10,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 09:42:10,440 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 09:42:10,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 09:42:10,441 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 09:42:10,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 09:42:10,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 09:42:10,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 09:42:10,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 09:42:10,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 09:42:10,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 09:42:10,442 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 09:42:10,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 09:42:10,442 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 09:42:10,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 09:42:10,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 09:42:10,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 09:42:10,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 09:42:10,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 09:42:10,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 09:42:10,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 09:42:10,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 09:42:10,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 09:42:10,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 09:42:10,444 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 09:42:10,444 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 09:42:10,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 09:42:10,444 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c788c1819bdb49f70cf486a187bd014d3d2cd0616eddb169336e33d9a4226f9c [2022-07-22 09:42:10,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 09:42:10,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 09:42:10,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 09:42:10,678 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 09:42:10,679 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 09:42:10,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sum.i [2022-07-22 09:42:10,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e358aa123/2180e0626b614bf887aff420cdfe9cf8/FLAG2eb60d556 [2022-07-22 09:42:11,117 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 09:42:11,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum.i [2022-07-22 09:42:11,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e358aa123/2180e0626b614bf887aff420cdfe9cf8/FLAG2eb60d556 [2022-07-22 09:42:11,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e358aa123/2180e0626b614bf887aff420cdfe9cf8 [2022-07-22 09:42:11,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 09:42:11,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 09:42:11,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 09:42:11,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 09:42:11,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 09:42:11,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:42:11" (1/1) ... [2022-07-22 09:42:11,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718e9e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:11, skipping insertion in model container [2022-07-22 09:42:11,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:42:11" (1/1) ... [2022-07-22 09:42:11,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 09:42:11,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 09:42:11,333 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/reducercommutativity/sum.i[1282,1295] [2022-07-22 09:42:11,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 09:42:11,348 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 09:42:11,381 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/reducercommutativity/sum.i[1282,1295] [2022-07-22 09:42:11,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 09:42:11,395 INFO L208 MainTranslator]: Completed translation [2022-07-22 09:42:11,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:11 WrapperNode [2022-07-22 09:42:11,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 09:42:11,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 09:42:11,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 09:42:11,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 09:42:11,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:11" (1/1) ... [2022-07-22 09:42:11,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:11" (1/1) ... [2022-07-22 09:42:11,436 INFO L137 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2022-07-22 09:42:11,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 09:42:11,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 09:42:11,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 09:42:11,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 09:42:11,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:11" (1/1) ... [2022-07-22 09:42:11,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:11" (1/1) ... [2022-07-22 09:42:11,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:11" (1/1) ... [2022-07-22 09:42:11,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:11" (1/1) ... [2022-07-22 09:42:11,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:11" (1/1) ... [2022-07-22 09:42:11,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:11" (1/1) ... [2022-07-22 09:42:11,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:11" (1/1) ... [2022-07-22 09:42:11,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 09:42:11,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 09:42:11,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 09:42:11,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 09:42:11,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:11" (1/1) ... [2022-07-22 09:42:11,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 09:42:11,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:42:11,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 09:42:11,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 09:42:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 09:42:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2022-07-22 09:42:11,553 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2022-07-22 09:42:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 09:42:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 09:42:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 09:42:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 09:42:11,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 09:42:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 09:42:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 09:42:11,628 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 09:42:11,629 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 09:42:11,795 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 09:42:11,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 09:42:11,801 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 09:42:11,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:42:11 BoogieIcfgContainer [2022-07-22 09:42:11,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 09:42:11,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 09:42:11,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 09:42:11,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 09:42:11,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:42:11" (1/3) ... [2022-07-22 09:42:11,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca586f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:42:11, skipping insertion in model container [2022-07-22 09:42:11,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:42:11" (2/3) ... [2022-07-22 09:42:11,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca586f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:42:11, skipping insertion in model container [2022-07-22 09:42:11,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:42:11" (3/3) ... [2022-07-22 09:42:11,810 INFO L111 eAbstractionObserver]: Analyzing ICFG sum.i [2022-07-22 09:42:11,821 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 09:42:11,822 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 09:42:11,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 09:42:11,884 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31744e45, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2ba40fc4 [2022-07-22 09:42:11,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 09:42:11,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 09:42:11,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 09:42:11,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:42:11,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:42:11,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:42:11,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:42:11,914 INFO L85 PathProgramCache]: Analyzing trace with hash 672214042, now seen corresponding path program 1 times [2022-07-22 09:42:11,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:42:11,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900899547] [2022-07-22 09:42:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:42:11,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:42:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:12,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 09:42:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:12,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 09:42:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:12,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 09:42:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 09:42:12,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:42:12,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900899547] [2022-07-22 09:42:12,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900899547] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:42:12,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855358521] [2022-07-22 09:42:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:42:12,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:42:12,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:42:12,137 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 09:42:12,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 09:42:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:12,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 09:42:12,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:42:12,249 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 09:42:12,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 09:42:12,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855358521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 09:42:12,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 09:42:12,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2022-07-22 09:42:12,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502477861] [2022-07-22 09:42:12,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 09:42:12,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 09:42:12,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:42:12,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 09:42:12,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 09:42:12,289 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 09:42:12,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:42:12,306 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2022-07-22 09:42:12,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 09:42:12,308 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-07-22 09:42:12,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:42:12,312 INFO L225 Difference]: With dead ends: 48 [2022-07-22 09:42:12,312 INFO L226 Difference]: Without dead ends: 21 [2022-07-22 09:42:12,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 09:42:12,317 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:42:12,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:42:12,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-22 09:42:12,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-22 09:42:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 09:42:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-07-22 09:42:12,344 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 28 [2022-07-22 09:42:12,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:42:12,345 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-07-22 09:42:12,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 09:42:12,345 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-07-22 09:42:12,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 09:42:12,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:42:12,346 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:42:12,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 09:42:12,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-22 09:42:12,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:42:12,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:42:12,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1430979692, now seen corresponding path program 1 times [2022-07-22 09:42:12,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:42:12,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502061771] [2022-07-22 09:42:12,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:42:12,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:42:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 09:42:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:12,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 09:42:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:12,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 09:42:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 09:42:12,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:42:12,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502061771] [2022-07-22 09:42:12,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502061771] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:42:12,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521597947] [2022-07-22 09:42:12,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:42:12,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:42:12,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:42:12,732 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 09:42:12,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 09:42:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:12,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 09:42:12,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:42:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 09:42:12,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 09:42:12,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521597947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 09:42:12,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 09:42:12,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2022-07-22 09:42:12,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531466174] [2022-07-22 09:42:12,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 09:42:12,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 09:42:12,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:42:12,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 09:42:12,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 09:42:12,897 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 09:42:12,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:42:12,924 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-07-22 09:42:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 09:42:12,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-07-22 09:42:12,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:42:12,927 INFO L225 Difference]: With dead ends: 40 [2022-07-22 09:42:12,928 INFO L226 Difference]: Without dead ends: 23 [2022-07-22 09:42:12,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 09:42:12,929 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:42:12,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 26 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:42:12,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-22 09:42:12,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-07-22 09:42:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 09:42:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-22 09:42:12,937 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 28 [2022-07-22 09:42:12,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:42:12,938 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-22 09:42:12,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 09:42:12,938 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-22 09:42:12,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 09:42:12,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:42:12,940 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:42:12,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 09:42:13,158 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,SelfDestructingSolverStorable1 [2022-07-22 09:42:13,158 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:42:13,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:42:13,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1840437650, now seen corresponding path program 1 times [2022-07-22 09:42:13,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:42:13,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184151371] [2022-07-22 09:42:13,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:42:13,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:42:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 09:42:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:13,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 09:42:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:13,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 09:42:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 09:42:13,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:42:13,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184151371] [2022-07-22 09:42:13,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184151371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 09:42:13,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 09:42:13,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 09:42:13,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29532285] [2022-07-22 09:42:13,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 09:42:13,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 09:42:13,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:42:13,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 09:42:13,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 09:42:13,259 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 09:42:13,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:42:13,296 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-07-22 09:42:13,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 09:42:13,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2022-07-22 09:42:13,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:42:13,298 INFO L225 Difference]: With dead ends: 37 [2022-07-22 09:42:13,298 INFO L226 Difference]: Without dead ends: 24 [2022-07-22 09:42:13,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 09:42:13,299 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 19 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:42:13,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 26 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:42:13,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-22 09:42:13,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-07-22 09:42:13,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 09:42:13,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-22 09:42:13,305 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 34 [2022-07-22 09:42:13,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:42:13,305 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-22 09:42:13,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 09:42:13,306 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-22 09:42:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 09:42:13,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:42:13,307 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:42:13,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 09:42:13,307 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:42:13,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:42:13,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1358176336, now seen corresponding path program 1 times [2022-07-22 09:42:13,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:42:13,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817502090] [2022-07-22 09:42:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:42:13,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:42:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:13,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 09:42:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:13,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 09:42:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:13,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 09:42:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 09:42:13,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:42:13,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817502090] [2022-07-22 09:42:13,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817502090] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:42:13,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718821628] [2022-07-22 09:42:13,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:42:13,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:42:13,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:42:13,468 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 09:42:13,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 09:42:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:13,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 09:42:13,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:42:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 09:42:13,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:42:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 09:42:13,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718821628] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:42:13,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:42:13,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 10 [2022-07-22 09:42:13,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227075872] [2022-07-22 09:42:13,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:42:13,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 09:42:13,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:42:13,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 09:42:13,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-22 09:42:13,708 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 09:42:13,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:42:13,770 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2022-07-22 09:42:13,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 09:42:13,777 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 36 [2022-07-22 09:42:13,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:42:13,778 INFO L225 Difference]: With dead ends: 45 [2022-07-22 09:42:13,786 INFO L226 Difference]: Without dead ends: 26 [2022-07-22 09:42:13,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-22 09:42:13,788 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 22 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:42:13,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 37 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:42:13,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-22 09:42:13,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-07-22 09:42:13,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 09:42:13,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-07-22 09:42:13,793 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 36 [2022-07-22 09:42:13,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:42:13,794 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-07-22 09:42:13,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 09:42:13,794 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-07-22 09:42:13,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 09:42:13,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:42:13,795 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:42:13,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 09:42:14,015 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 [2022-07-22 09:42:14,017 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:42:14,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:42:14,018 INFO L85 PathProgramCache]: Analyzing trace with hash 213817262, now seen corresponding path program 2 times [2022-07-22 09:42:14,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:42:14,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742810596] [2022-07-22 09:42:14,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:42:14,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:42:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:15,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 09:42:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:15,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 09:42:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:42:15,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 09:42:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat