./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/product-lines/minepump_spec1_product33.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 49ee68200af8723d15a4fe21e3a4e6e289306e92 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 08:42:48,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 08:42:48,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 08:42:48,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 08:42:48,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 08:42:48,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 08:42:48,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 08:42:48,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 08:42:48,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 08:42:48,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 08:42:48,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 08:42:48,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 08:42:48,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 08:42:48,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 08:42:48,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 08:42:48,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 08:42:48,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 08:42:48,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 08:42:48,288 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 08:42:48,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 08:42:48,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 08:42:48,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 08:42:48,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 08:42:48,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 08:42:48,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 08:42:48,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 08:42:48,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 08:42:48,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 08:42:48,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 08:42:48,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 08:42:48,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 08:42:48,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 08:42:48,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 08:42:48,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 08:42:48,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 08:42:48,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 08:42:48,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 08:42:48,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 08:42:48,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 08:42:48,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 08:42:48,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 08:42:48,317 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 08:42:48,352 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 08:42:48,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 08:42:48,353 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 08:42:48,354 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 08:42:48,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 08:42:48,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 08:42:48,355 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 08:42:48,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 08:42:48,356 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 08:42:48,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 08:42:48,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 08:42:48,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 08:42:48,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 08:42:48,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 08:42:48,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 08:42:48,358 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 08:42:48,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 08:42:48,358 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 08:42:48,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 08:42:48,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 08:42:48,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 08:42:48,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 08:42:48,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 08:42:48,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 08:42:48,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 08:42:48,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 08:42:48,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 08:42:48,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 08:42:48,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 08:42:48,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 08:42:48,360 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49ee68200af8723d15a4fe21e3a4e6e289306e92 [2021-08-26 08:42:48,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 08:42:48,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 08:42:48,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 08:42:48,705 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 08:42:48,706 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 08:42:48,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product33.cil.c [2021-08-26 08:42:48,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c77bf14de/76651dbdbc024abca3c627f0252f7d30/FLAGadfc629be [2021-08-26 08:42:49,309 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 08:42:49,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product33.cil.c [2021-08-26 08:42:49,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c77bf14de/76651dbdbc024abca3c627f0252f7d30/FLAGadfc629be [2021-08-26 08:42:49,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c77bf14de/76651dbdbc024abca3c627f0252f7d30 [2021-08-26 08:42:49,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 08:42:49,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 08:42:49,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 08:42:49,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 08:42:49,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 08:42:49,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:42:49" (1/1) ... [2021-08-26 08:42:49,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74323cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:49, skipping insertion in model container [2021-08-26 08:42:49,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:42:49" (1/1) ... [2021-08-26 08:42:49,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 08:42:49,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 08:42:50,027 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product33.cil.c[10968,10981] [2021-08-26 08:42:50,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 08:42:50,080 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 08:42:50,116 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product33.cil.c[10968,10981] [2021-08-26 08:42:50,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 08:42:50,162 INFO L208 MainTranslator]: Completed translation [2021-08-26 08:42:50,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50 WrapperNode [2021-08-26 08:42:50,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 08:42:50,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 08:42:50,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 08:42:50,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 08:42:50,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 08:42:50,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 08:42:50,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 08:42:50,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 08:42:50,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 08:42:50,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 08:42:50,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 08:42:50,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 08:42:50,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (1/1) ... [2021-08-26 08:42:50,265 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 08:42:50,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:42:50,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 08:42:50,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 08:42:50,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 08:42:50,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 08:42:50,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 08:42:50,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 08:42:50,853 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 08:42:50,853 INFO L299 CfgBuilder]: Removed 96 assume(true) statements. [2021-08-26 08:42:50,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:42:50 BoogieIcfgContainer [2021-08-26 08:42:50,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 08:42:50,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 08:42:50,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 08:42:50,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 08:42:50,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:42:49" (1/3) ... [2021-08-26 08:42:50,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2094be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:42:50, skipping insertion in model container [2021-08-26 08:42:50,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:42:50" (2/3) ... [2021-08-26 08:42:50,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2094be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:42:50, skipping insertion in model container [2021-08-26 08:42:50,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:42:50" (3/3) ... [2021-08-26 08:42:50,862 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2021-08-26 08:42:50,865 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 08:42:50,866 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-26 08:42:50,912 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 08:42:50,919 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 08:42:50,920 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-26 08:42:50,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 74 states have (on average 1.5810810810810811) internal successors, (117), 77 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:50,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 08:42:50,943 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:50,944 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:42:50,945 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:50,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:50,950 INFO L82 PathProgramCache]: Analyzing trace with hash 768274677, now seen corresponding path program 1 times [2021-08-26 08:42:50,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:50,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430821403] [2021-08-26 08:42:50,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:50,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:51,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:51,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430821403] [2021-08-26 08:42:51,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430821403] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:51,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:51,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 08:42:51,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222681681] [2021-08-26 08:42:51,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 08:42:51,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:51,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 08:42:51,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 08:42:51,265 INFO L87 Difference]: Start difference. First operand has 78 states, 74 states have (on average 1.5810810810810811) internal successors, (117), 77 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:51,296 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2021-08-26 08:42:51,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 08:42:51,298 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-26 08:42:51,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:51,306 INFO L225 Difference]: With dead ends: 150 [2021-08-26 08:42:51,307 INFO L226 Difference]: Without dead ends: 74 [2021-08-26 08:42:51,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 08:42:51,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-08-26 08:42:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-08-26 08:42:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 73 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2021-08-26 08:42:51,348 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2021-08-26 08:42:51,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:51,350 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2021-08-26 08:42:51,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,351 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2021-08-26 08:42:51,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 08:42:51,352 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:51,352 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:42:51,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 08:42:51,353 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:51,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:51,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1484097871, now seen corresponding path program 1 times [2021-08-26 08:42:51,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:51,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759587860] [2021-08-26 08:42:51,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:51,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:51,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:51,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759587860] [2021-08-26 08:42:51,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759587860] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:51,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:51,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 08:42:51,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026037673] [2021-08-26 08:42:51,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 08:42:51,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:51,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 08:42:51,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:42:51,488 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:51,499 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2021-08-26 08:42:51,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 08:42:51,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-26 08:42:51,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:51,501 INFO L225 Difference]: With dead ends: 74 [2021-08-26 08:42:51,502 INFO L226 Difference]: Without dead ends: 34 [2021-08-26 08:42:51,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:42:51,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-26 08:42:51,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-08-26 08:42:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2021-08-26 08:42:51,511 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2021-08-26 08:42:51,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:51,511 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2021-08-26 08:42:51,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,512 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2021-08-26 08:42:51,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 08:42:51,513 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:51,513 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:42:51,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 08:42:51,514 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:51,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:51,522 INFO L82 PathProgramCache]: Analyzing trace with hash 670124178, now seen corresponding path program 1 times [2021-08-26 08:42:51,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:51,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10836944] [2021-08-26 08:42:51,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:51,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:51,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:51,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10836944] [2021-08-26 08:42:51,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10836944] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:51,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:51,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 08:42:51,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434076382] [2021-08-26 08:42:51,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 08:42:51,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:51,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 08:42:51,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 08:42:51,611 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:51,723 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2021-08-26 08:42:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 08:42:51,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-08-26 08:42:51,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:51,726 INFO L225 Difference]: With dead ends: 62 [2021-08-26 08:42:51,726 INFO L226 Difference]: Without dead ends: 34 [2021-08-26 08:42:51,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-26 08:42:51,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-26 08:42:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-08-26 08:42:51,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2021-08-26 08:42:51,731 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2021-08-26 08:42:51,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:51,732 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2021-08-26 08:42:51,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,732 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2021-08-26 08:42:51,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-26 08:42:51,733 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:51,733 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:42:51,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 08:42:51,733 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:51,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:51,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1804645939, now seen corresponding path program 1 times [2021-08-26 08:42:51,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:51,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664943637] [2021-08-26 08:42:51,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:51,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:51,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:51,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664943637] [2021-08-26 08:42:51,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664943637] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:51,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:51,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 08:42:51,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103464151] [2021-08-26 08:42:51,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 08:42:51,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:51,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 08:42:51,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:42:51,821 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:51,848 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2021-08-26 08:42:51,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 08:42:51,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-08-26 08:42:51,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:51,851 INFO L225 Difference]: With dead ends: 83 [2021-08-26 08:42:51,851 INFO L226 Difference]: Without dead ends: 55 [2021-08-26 08:42:51,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:42:51,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-08-26 08:42:51,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-08-26 08:42:51,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4230769230769231) internal successors, (74), 52 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2021-08-26 08:42:51,869 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2021-08-26 08:42:51,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:51,869 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2021-08-26 08:42:51,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:51,870 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2021-08-26 08:42:51,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 08:42:51,871 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:51,871 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:42:51,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 08:42:51,872 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:51,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:51,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1746371458, now seen corresponding path program 1 times [2021-08-26 08:42:51,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:51,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039576499] [2021-08-26 08:42:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:51,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:51,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:51,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:51,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039576499] [2021-08-26 08:42:51,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039576499] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:51,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:51,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 08:42:51,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759048561] [2021-08-26 08:42:51,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 08:42:51,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:51,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 08:42:51,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:42:51,979 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:52,032 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2021-08-26 08:42:52,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 08:42:52,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-08-26 08:42:52,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:52,035 INFO L225 Difference]: With dead ends: 139 [2021-08-26 08:42:52,035 INFO L226 Difference]: Without dead ends: 92 [2021-08-26 08:42:52,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 08:42:52,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-26 08:42:52,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2021-08-26 08:42:52,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2021-08-26 08:42:52,048 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2021-08-26 08:42:52,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:52,049 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2021-08-26 08:42:52,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,049 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2021-08-26 08:42:52,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 08:42:52,050 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:52,050 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:42:52,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 08:42:52,050 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:52,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:52,051 INFO L82 PathProgramCache]: Analyzing trace with hash 916139585, now seen corresponding path program 1 times [2021-08-26 08:42:52,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:52,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281783641] [2021-08-26 08:42:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:52,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:52,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:52,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:52,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281783641] [2021-08-26 08:42:52,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281783641] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:52,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:52,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 08:42:52,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963499583] [2021-08-26 08:42:52,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 08:42:52,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:52,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 08:42:52,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:42:52,127 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:52,208 INFO L93 Difference]: Finished difference Result 270 states and 384 transitions. [2021-08-26 08:42:52,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 08:42:52,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-08-26 08:42:52,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:52,211 INFO L225 Difference]: With dead ends: 270 [2021-08-26 08:42:52,211 INFO L226 Difference]: Without dead ends: 220 [2021-08-26 08:42:52,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 41.1ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-26 08:42:52,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-08-26 08:42:52,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 100. [2021-08-26 08:42:52,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.3838383838383839) internal successors, (137), 99 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 137 transitions. [2021-08-26 08:42:52,235 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 137 transitions. Word has length 29 [2021-08-26 08:42:52,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:52,236 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 137 transitions. [2021-08-26 08:42:52,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,236 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 137 transitions. [2021-08-26 08:42:52,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-26 08:42:52,241 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:52,241 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:42:52,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-26 08:42:52,242 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:52,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:52,242 INFO L82 PathProgramCache]: Analyzing trace with hash -863305781, now seen corresponding path program 1 times [2021-08-26 08:42:52,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:52,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447280745] [2021-08-26 08:42:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:52,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:52,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:52,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:52,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447280745] [2021-08-26 08:42:52,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447280745] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:52,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:52,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 08:42:52,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050239968] [2021-08-26 08:42:52,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 08:42:52,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:52,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 08:42:52,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:42:52,304 INFO L87 Difference]: Start difference. First operand 100 states and 137 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:52,386 INFO L93 Difference]: Finished difference Result 280 states and 386 transitions. [2021-08-26 08:42:52,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 08:42:52,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-08-26 08:42:52,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:52,390 INFO L225 Difference]: With dead ends: 280 [2021-08-26 08:42:52,390 INFO L226 Difference]: Without dead ends: 278 [2021-08-26 08:42:52,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 35.3ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-26 08:42:52,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-08-26 08:42:52,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2021-08-26 08:42:52,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.3737373737373737) internal successors, (136), 99 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 136 transitions. [2021-08-26 08:42:52,404 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 136 transitions. Word has length 30 [2021-08-26 08:42:52,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:52,405 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 136 transitions. [2021-08-26 08:42:52,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,405 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 136 transitions. [2021-08-26 08:42:52,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-26 08:42:52,408 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:52,408 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:42:52,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-26 08:42:52,408 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:52,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:52,409 INFO L82 PathProgramCache]: Analyzing trace with hash 376123462, now seen corresponding path program 1 times [2021-08-26 08:42:52,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:52,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272188993] [2021-08-26 08:42:52,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:52,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:52,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:52,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272188993] [2021-08-26 08:42:52,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272188993] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:52,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:52,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 08:42:52,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242984581] [2021-08-26 08:42:52,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 08:42:52,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:52,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 08:42:52,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 08:42:52,467 INFO L87 Difference]: Start difference. First operand 100 states and 136 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:52,493 INFO L93 Difference]: Finished difference Result 240 states and 326 transitions. [2021-08-26 08:42:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 08:42:52,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-08-26 08:42:52,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:52,495 INFO L225 Difference]: With dead ends: 240 [2021-08-26 08:42:52,495 INFO L226 Difference]: Without dead ends: 146 [2021-08-26 08:42:52,495 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:42:52,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-26 08:42:52,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 104. [2021-08-26 08:42:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.3592233009708738) internal successors, (140), 103 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 140 transitions. [2021-08-26 08:42:52,502 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 140 transitions. Word has length 30 [2021-08-26 08:42:52,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:52,502 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 140 transitions. [2021-08-26 08:42:52,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 140 transitions. [2021-08-26 08:42:52,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-26 08:42:52,503 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:52,503 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:42:52,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-26 08:42:52,504 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:52,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:52,505 INFO L82 PathProgramCache]: Analyzing trace with hash 634288900, now seen corresponding path program 1 times [2021-08-26 08:42:52,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:52,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422556214] [2021-08-26 08:42:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:52,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:42:52,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:42:52,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:42:52,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422556214] [2021-08-26 08:42:52,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422556214] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:42:52,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:42:52,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 08:42:52,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230452032] [2021-08-26 08:42:52,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 08:42:52,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:42:52,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 08:42:52,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:42:52,550 INFO L87 Difference]: Start difference. First operand 104 states and 140 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:42:52,570 INFO L93 Difference]: Finished difference Result 250 states and 336 transitions. [2021-08-26 08:42:52,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 08:42:52,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-08-26 08:42:52,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:42:52,572 INFO L225 Difference]: With dead ends: 250 [2021-08-26 08:42:52,572 INFO L226 Difference]: Without dead ends: 152 [2021-08-26 08:42:52,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:42:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-08-26 08:42:52,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-08-26 08:42:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.3112582781456954) internal successors, (198), 151 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 198 transitions. [2021-08-26 08:42:52,589 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 198 transitions. Word has length 30 [2021-08-26 08:42:52,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:42:52,589 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 198 transitions. [2021-08-26 08:42:52,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:42:52,590 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 198 transitions. [2021-08-26 08:42:52,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-26 08:42:52,591 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:42:52,591 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:42:52,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-26 08:42:52,591 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:42:52,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:42:52,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1373527294, now seen corresponding path program 1 times [2021-08-26 08:42:52,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:42:52,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656886000] [2021-08-26 08:42:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:42:52,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:42:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 08:42:52,657 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 08:42:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 08:42:52,730 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 08:42:52,731 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 08:42:52,731 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 08:42:52,733 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 08:42:52,733 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 08:42:52,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-26 08:42:52,739 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 08:42:52,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 08:42:52 BoogieIcfgContainer [2021-08-26 08:42:52,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 08:42:52,803 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 08:42:52,803 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 08:42:52,803 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 08:42:52,804 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:42:50" (3/4) ... [2021-08-26 08:42:52,805 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-26 08:42:52,878 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 08:42:52,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 08:42:52,880 INFO L168 Benchmark]: Toolchain (without parser) took 3086.51 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 39.4 MB in the beginning and 44.7 MB in the end (delta: -5.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2021-08-26 08:42:52,880 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 08:42:52,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.86 ms. Allocated memory is still 60.8 MB. Free memory was 39.3 MB in the beginning and 36.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 08:42:52,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.04 ms. Allocated memory is still 60.8 MB. Free memory was 36.1 MB in the beginning and 33.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 08:42:52,881 INFO L168 Benchmark]: Boogie Preprocessor took 27.25 ms. Allocated memory is still 60.8 MB. Free memory was 33.3 MB in the beginning and 31.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 08:42:52,882 INFO L168 Benchmark]: RCFGBuilder took 596.34 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 31.2 MB in the beginning and 43.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2021-08-26 08:42:52,882 INFO L168 Benchmark]: TraceAbstraction took 1946.11 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 42.7 MB in the beginning and 58.0 MB in the end (delta: -15.3 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2021-08-26 08:42:52,882 INFO L168 Benchmark]: Witness Printer took 75.38 ms. Allocated memory is still 88.1 MB. Free memory was 58.0 MB in the beginning and 44.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 08:42:52,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 60.8 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 368.86 ms. Allocated memory is still 60.8 MB. Free memory was 39.3 MB in the beginning and 36.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.04 ms. Allocated memory is still 60.8 MB. Free memory was 36.1 MB in the beginning and 33.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.25 ms. Allocated memory is still 60.8 MB. Free memory was 33.3 MB in the beginning and 31.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 596.34 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 31.2 MB in the beginning and 43.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1946.11 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 42.7 MB in the beginning and 58.0 MB in the end (delta: -15.3 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. * Witness Printer took 75.38 ms. Allocated memory is still 88.1 MB. Free memory was 58.0 MB in the beginning and 44.7 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 412]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L426] int pumpRunning = 0; [L427] int systemActive = 1; [L685] int cleanupTimeShifts = 4; [L808] int waterLevel = 1; [L809] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L758] int retValue_acc ; [L759] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L676] int retValue_acc ; [L679] retValue_acc = 1 [L680] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L765] tmp = valid_product() [L767] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L583] int splverifierCounter ; [L584] int tmp ; [L585] int tmp___0 ; [L586] int tmp___1 ; [L587] int tmp___2 ; [L590] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L592] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L594] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L600] tmp = __VERIFIER_nondet_int() [L602] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L826] COND TRUE waterLevel < 2 [L827] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L610] tmp___0 = __VERIFIER_nondet_int() [L612] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L838] COND FALSE !(\read(methaneLevelCritical)) [L841] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L620] tmp___2 = __VERIFIER_nondet_int() [L622] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L434] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L441] COND TRUE \read(systemActive) [L463] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L466] COND TRUE ! pumpRunning [L560] int retValue_acc ; [L561] int tmp ; [L562] int tmp___0 ; [L888] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L891] COND FALSE !(waterLevel < 2) [L895] retValue_acc = 0 [L896] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L566] tmp = isHighWaterSensorDry() [L568] COND FALSE !(\read(tmp)) [L571] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L573] retValue_acc = tmp___0 [L574] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L468] tmp = isHighWaterLevel() [L470] COND TRUE \read(tmp) [L491] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L782] int tmp ; [L783] int tmp___0 ; [L847] int retValue_acc ; [L850] retValue_acc = methaneLevelCritical [L851] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L787] tmp = isMethaneLevelCritical() [L789] COND TRUE \read(tmp) [L515] int retValue_acc ; [L518] retValue_acc = pumpRunning [L519] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L791] tmp___0 = isPumpRunning() [L793] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L412] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 412]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 412]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 78 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1826.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 26.5ms, AutomataDifference: 517.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 577 SDtfs, 724 SDslu, 754 SDs, 0 SdLazy, 103 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 158.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 155.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=9, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 121.0ms AutomataMinimizationTime, 9 MinimizatonAttempts, 378 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 50.5ms SsaConstructionTime, 319.3ms SatisfiabilityAnalysisTime, 484.2ms InterpolantComputationTime, 257 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 446 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-26 08:42:52,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...