./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 f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-f4b24e3 [2022-07-13 10:04:32,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 10:04:32,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 10:04:32,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 10:04:32,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 10:04:32,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 10:04:32,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 10:04:32,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 10:04:32,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 10:04:32,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 10:04:32,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 10:04:32,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 10:04:32,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 10:04:32,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 10:04:32,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 10:04:32,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 10:04:32,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 10:04:32,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 10:04:32,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 10:04:32,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 10:04:32,310 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 10:04:32,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 10:04:32,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 10:04:32,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 10:04:32,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 10:04:32,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 10:04:32,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 10:04:32,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 10:04:32,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 10:04:32,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 10:04:32,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 10:04:32,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 10:04:32,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 10:04:32,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 10:04:32,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 10:04:32,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 10:04:32,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 10:04:32,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 10:04:32,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 10:04:32,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 10:04:32,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 10:04:32,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 10:04:32,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 10:04:32,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 10:04:32,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 10:04:32,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 10:04:32,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 10:04:32,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 10:04:32,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 10:04:32,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 10:04:32,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 10:04:32,351 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 10:04:32,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 10:04:32,352 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 10:04:32,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 10:04:32,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 10:04:32,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 10:04:32,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 10:04:32,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 10:04:32,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 10:04:32,353 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 10:04:32,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 10:04:32,354 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 10:04:32,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 10:04:32,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 10:04:32,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 10:04:32,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 10:04:32,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:04:32,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 10:04:32,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 10:04:32,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 10:04:32,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 10:04:32,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 10:04:32,356 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 10:04:32,356 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 10:04:32,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 10:04:32,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c788c1819bdb49f70cf486a187bd014d3d2cd0616eddb169336e33d9a4226f9c [2022-07-13 10:04:32,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 10:04:32,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 10:04:32,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 10:04:32,580 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 10:04:32,581 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 10:04:32,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sum.i [2022-07-13 10:04:32,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4679f08ba/2d98d5684aba4dcf860abf6211fa1b42/FLAG5e79f43a9 [2022-07-13 10:04:32,994 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 10:04:32,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum.i [2022-07-13 10:04:32,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4679f08ba/2d98d5684aba4dcf860abf6211fa1b42/FLAG5e79f43a9 [2022-07-13 10:04:33,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4679f08ba/2d98d5684aba4dcf860abf6211fa1b42 [2022-07-13 10:04:33,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 10:04:33,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 10:04:33,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 10:04:33,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 10:04:33,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 10:04:33,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:04:33" (1/1) ... [2022-07-13 10:04:33,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24255db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:33, skipping insertion in model container [2022-07-13 10:04:33,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:04:33" (1/1) ... [2022-07-13 10:04:33,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 10:04:33,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 10:04:33,164 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] [2022-07-13 10:04:33,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:04:33,170 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 10:04:33,182 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] [2022-07-13 10:04:33,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:04:33,191 INFO L208 MainTranslator]: Completed translation [2022-07-13 10:04:33,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:33 WrapperNode [2022-07-13 10:04:33,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 10:04:33,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 10:04:33,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 10:04:33,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 10:04:33,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:33" (1/1) ... [2022-07-13 10:04:33,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:33" (1/1) ... [2022-07-13 10:04:33,226 INFO L137 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2022-07-13 10:04:33,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 10:04:33,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 10:04:33,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 10:04:33,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 10:04:33,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:33" (1/1) ... [2022-07-13 10:04:33,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:33" (1/1) ... [2022-07-13 10:04:33,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:33" (1/1) ... [2022-07-13 10:04:33,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:33" (1/1) ... [2022-07-13 10:04:33,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:33" (1/1) ... [2022-07-13 10:04:33,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:33" (1/1) ... [2022-07-13 10:04:33,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:33" (1/1) ... [2022-07-13 10:04:33,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 10:04:33,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 10:04:33,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 10:04:33,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 10:04:33,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:33" (1/1) ... [2022-07-13 10:04:33,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:04:33,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:04:33,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 10:04:33,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 10:04:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 10:04:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2022-07-13 10:04:33,313 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2022-07-13 10:04:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 10:04:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 10:04:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 10:04:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 10:04:33,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 10:04:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 10:04:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 10:04:33,365 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 10:04:33,366 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 10:04:33,459 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 10:04:33,465 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 10:04:33,465 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 10:04:33,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:04:33 BoogieIcfgContainer [2022-07-13 10:04:33,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 10:04:33,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 10:04:33,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 10:04:33,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 10:04:33,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:04:33" (1/3) ... [2022-07-13 10:04:33,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf5143d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:04:33, skipping insertion in model container [2022-07-13 10:04:33,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:04:33" (2/3) ... [2022-07-13 10:04:33,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf5143d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:04:33, skipping insertion in model container [2022-07-13 10:04:33,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:04:33" (3/3) ... [2022-07-13 10:04:33,492 INFO L111 eAbstractionObserver]: Analyzing ICFG sum.i [2022-07-13 10:04:33,501 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 10:04:33,502 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 10:04:33,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 10:04:33,554 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@6f23e97d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b18c446 [2022-07-13 10:04:33,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 10:04:33,562 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) [2022-07-13 10:04:33,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 10:04:33,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:04:33,570 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] [2022-07-13 10:04:33,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:04:33,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:04:33,575 INFO L85 PathProgramCache]: Analyzing trace with hash 672214042, now seen corresponding path program 1 times [2022-07-13 10:04:33,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:04:33,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2260868] [2022-07-13 10:04:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:04:33,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:04:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:33,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 10:04:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 10:04:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:33,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 10:04:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 10:04:33,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:04:33,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2260868] [2022-07-13 10:04:33,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2260868] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:04:33,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472729456] [2022-07-13 10:04:33,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:04:33,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:04:33,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:04:33,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:04:33,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 10:04:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:33,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 10:04:33,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:04:33,955 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 10:04:33,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:04:33,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472729456] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:04:33,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 10:04:33,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2022-07-13 10:04:33,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425366001] [2022-07-13 10:04:33,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:04:33,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 10:04:33,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:04:34,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 10:04:34,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:04:34,011 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) [2022-07-13 10:04:34,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:04:34,023 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2022-07-13 10:04:34,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 10:04:34,028 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 [2022-07-13 10:04:34,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:04:34,035 INFO L225 Difference]: With dead ends: 48 [2022-07-13 10:04:34,036 INFO L226 Difference]: Without dead ends: 21 [2022-07-13 10:04:34,038 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 [2022-07-13 10:04:34,042 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 [2022-07-13 10:04:34,044 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] [2022-07-13 10:04:34,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-13 10:04:34,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-13 10:04:34,081 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) [2022-07-13 10:04:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-07-13 10:04:34,084 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 28 [2022-07-13 10:04:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:04:34,086 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-07-13 10:04:34,087 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) [2022-07-13 10:04:34,087 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-07-13 10:04:34,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 10:04:34,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:04:34,089 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] [2022-07-13 10:04:34,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 10:04:34,303 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 [2022-07-13 10:04:34,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:04:34,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:04:34,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1430979692, now seen corresponding path program 1 times [2022-07-13 10:04:34,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:04:34,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364436759] [2022-07-13 10:04:34,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:04:34,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:04:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:34,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 10:04:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:34,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 10:04:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:34,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 10:04:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:34,393 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 10:04:34,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:04:34,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364436759] [2022-07-13 10:04:34,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364436759] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:04:34,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018910151] [2022-07-13 10:04:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:04:34,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:04:34,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:04:34,396 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:04:34,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 10:04:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:34,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 10:04:34,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:04:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 10:04:34,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:04:34,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018910151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:04:34,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 10:04:34,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2022-07-13 10:04:34,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165693621] [2022-07-13 10:04:34,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:04:34,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 10:04:34,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:04:34,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 10:04:34,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 10:04:34,479 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) [2022-07-13 10:04:34,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:04:34,505 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-07-13 10:04:34,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 10:04:34,506 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 [2022-07-13 10:04:34,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:04:34,506 INFO L225 Difference]: With dead ends: 40 [2022-07-13 10:04:34,506 INFO L226 Difference]: Without dead ends: 23 [2022-07-13 10:04:34,507 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 [2022-07-13 10:04:34,508 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 [2022-07-13 10:04:34,508 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] [2022-07-13 10:04:34,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-13 10:04:34,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-07-13 10:04:34,512 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) [2022-07-13 10:04:34,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-13 10:04:34,512 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 28 [2022-07-13 10:04:34,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:04:34,513 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-13 10:04:34,513 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) [2022-07-13 10:04:34,513 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-13 10:04:34,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-13 10:04:34,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:04:34,514 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] [2022-07-13 10:04:34,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 10:04:34,732 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 [2022-07-13 10:04:34,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:04:34,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:04:34,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1840437650, now seen corresponding path program 1 times [2022-07-13 10:04:34,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:04:34,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061120615] [2022-07-13 10:04:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:04:34,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:04:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:34,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 10:04:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:34,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 10:04:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:34,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 10:04:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:34,842 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 10:04:34,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:04:34,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061120615] [2022-07-13 10:04:34,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061120615] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:04:34,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:04:34,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 10:04:34,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020870838] [2022-07-13 10:04:34,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:04:34,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 10:04:34,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:04:34,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 10:04:34,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 10:04:34,845 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) [2022-07-13 10:04:34,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:04:34,881 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-07-13 10:04:34,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 10:04:34,881 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 [2022-07-13 10:04:34,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:04:34,882 INFO L225 Difference]: With dead ends: 37 [2022-07-13 10:04:34,882 INFO L226 Difference]: Without dead ends: 24 [2022-07-13 10:04:34,882 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 [2022-07-13 10:04:34,883 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 [2022-07-13 10:04:34,886 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] [2022-07-13 10:04:34,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-13 10:04:34,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-07-13 10:04:34,889 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) [2022-07-13 10:04:34,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-13 10:04:34,890 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 34 [2022-07-13 10:04:34,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:04:34,890 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-13 10:04:34,891 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) [2022-07-13 10:04:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-13 10:04:34,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 10:04:34,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:04:34,892 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] [2022-07-13 10:04:34,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 10:04:34,892 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:04:34,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:04:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1358176336, now seen corresponding path program 1 times [2022-07-13 10:04:34,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:04:34,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728616088] [2022-07-13 10:04:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:04:34,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:04:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 10:04:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:34,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 10:04:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:34,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 10:04:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 10:04:34,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:04:34,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728616088] [2022-07-13 10:04:34,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728616088] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:04:34,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657351490] [2022-07-13 10:04:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:04:34,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:04:34,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:04:34,980 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:04:34,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 10:04:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:35,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 10:04:35,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:04:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 10:04:35,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:04:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 10:04:35,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657351490] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:04:35,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:04:35,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 10 [2022-07-13 10:04:35,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156412992] [2022-07-13 10:04:35,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:04:35,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 10:04:35,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:04:35,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 10:04:35,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 10:04:35,165 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) [2022-07-13 10:04:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:04:35,230 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2022-07-13 10:04:35,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 10:04:35,235 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 [2022-07-13 10:04:35,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:04:35,237 INFO L225 Difference]: With dead ends: 45 [2022-07-13 10:04:35,237 INFO L226 Difference]: Without dead ends: 26 [2022-07-13 10:04:35,238 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 [2022-07-13 10:04:35,239 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 [2022-07-13 10:04:35,239 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] [2022-07-13 10:04:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-13 10:04:35,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-07-13 10:04:35,242 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) [2022-07-13 10:04:35,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-07-13 10:04:35,242 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 36 [2022-07-13 10:04:35,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:04:35,243 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-07-13 10:04:35,243 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) [2022-07-13 10:04:35,243 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-07-13 10:04:35,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 10:04:35,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:04:35,244 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] [2022-07-13 10:04:35,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 10:04:35,461 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 [2022-07-13 10:04:35,461 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:04:35,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:04:35,462 INFO L85 PathProgramCache]: Analyzing trace with hash 213817262, now seen corresponding path program 2 times [2022-07-13 10:04:35,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:04:35,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718689161] [2022-07-13 10:04:35,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:04:35,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:04:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:36,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 10:04:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:37,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 10:04:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:04:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 10:04:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat