./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product64.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_spec3_product64.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 0c75cc0efa833cee2ae88b3635c1f8807d970760 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-5485861 [2020-10-25 23:06:52,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 23:06:52,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 23:06:53,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 23:06:53,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 23:06:53,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 23:06:53,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 23:06:53,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 23:06:53,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 23:06:53,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 23:06:53,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 23:06:53,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 23:06:53,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 23:06:53,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 23:06:53,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 23:06:53,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 23:06:53,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 23:06:53,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 23:06:53,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 23:06:53,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 23:06:53,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 23:06:53,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 23:06:53,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 23:06:53,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 23:06:53,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 23:06:53,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 23:06:53,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 23:06:53,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 23:06:53,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 23:06:53,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 23:06:53,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 23:06:53,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 23:06:53,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 23:06:53,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 23:06:53,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 23:06:53,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 23:06:53,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 23:06:53,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 23:06:53,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 23:06:53,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 23:06:53,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 23:06:53,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 23:06:53,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 23:06:53,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 23:06:53,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 23:06:53,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 23:06:53,184 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 23:06:53,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 23:06:53,185 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 23:06:53,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 23:06:53,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 23:06:53,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 23:06:53,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 23:06:53,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 23:06:53,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 23:06:53,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 23:06:53,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 23:06:53,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 23:06:53,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 23:06:53,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 23:06:53,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 23:06:53,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 23:06:53,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 23:06:53,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 23:06:53,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 23:06:53,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 23:06:53,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 23:06:53,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 23:06:53,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 23:06:53,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 23:06:53,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 23:06:53,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c75cc0efa833cee2ae88b3635c1f8807d970760 [2020-10-25 23:06:53,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 23:06:53,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 23:06:53,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 23:06:53,623 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 23:06:53,625 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 23:06:53,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product64.cil.c [2020-10-25 23:06:53,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1a5c43b/bf0a08c1d6eb417392f710849a235bf2/FLAG878672a08 [2020-10-25 23:06:54,431 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 23:06:54,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product64.cil.c [2020-10-25 23:06:54,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1a5c43b/bf0a08c1d6eb417392f710849a235bf2/FLAG878672a08 [2020-10-25 23:06:54,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af1a5c43b/bf0a08c1d6eb417392f710849a235bf2 [2020-10-25 23:06:54,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 23:06:54,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 23:06:54,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 23:06:54,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 23:06:54,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 23:06:54,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:06:54" (1/1) ... [2020-10-25 23:06:54,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5875ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:54, skipping insertion in model container [2020-10-25 23:06:54,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:06:54" (1/1) ... [2020-10-25 23:06:54,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 23:06:54,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 23:06:55,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:06:55,231 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 23:06:55,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:06:55,377 INFO L208 MainTranslator]: Completed translation [2020-10-25 23:06:55,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:55 WrapperNode [2020-10-25 23:06:55,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 23:06:55,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 23:06:55,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 23:06:55,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 23:06:55,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:55" (1/1) ... [2020-10-25 23:06:55,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:55" (1/1) ... [2020-10-25 23:06:55,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 23:06:55,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 23:06:55,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 23:06:55,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 23:06:55,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:55" (1/1) ... [2020-10-25 23:06:55,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:55" (1/1) ... [2020-10-25 23:06:55,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:55" (1/1) ... [2020-10-25 23:06:55,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:55" (1/1) ... [2020-10-25 23:06:55,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:55" (1/1) ... [2020-10-25 23:06:55,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:55" (1/1) ... [2020-10-25 23:06:55,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:55" (1/1) ... [2020-10-25 23:06:55,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 23:06:55,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 23:06:55,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 23:06:55,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 23:06:55,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 23:06:55,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 23:06:55,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 23:06:55,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 23:06:55,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 23:06:57,253 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 23:06:57,253 INFO L298 CfgBuilder]: Removed 366 assume(true) statements. [2020-10-25 23:06:57,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:06:57 BoogieIcfgContainer [2020-10-25 23:06:57,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 23:06:57,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 23:06:57,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 23:06:57,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 23:06:57,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 11:06:54" (1/3) ... [2020-10-25 23:06:57,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292fb5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:06:57, skipping insertion in model container [2020-10-25 23:06:57,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:06:55" (2/3) ... [2020-10-25 23:06:57,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292fb5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:06:57, skipping insertion in model container [2020-10-25 23:06:57,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:06:57" (3/3) ... [2020-10-25 23:06:57,266 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product64.cil.c [2020-10-25 23:06:57,280 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 23:06:57,286 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-25 23:06:57,301 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-25 23:06:57,342 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 23:06:57,342 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 23:06:57,343 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 23:06:57,343 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 23:06:57,343 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 23:06:57,343 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 23:06:57,343 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 23:06:57,344 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 23:06:57,366 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-10-25 23:06:57,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 23:06:57,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:06:57,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:06:57,376 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:06:57,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:06:57,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1225666969, now seen corresponding path program 1 times [2020-10-25 23:06:57,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:06:57,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767222764] [2020-10-25 23:06:57,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:06:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:06:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:06:57,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767222764] [2020-10-25 23:06:57,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:06:57,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 23:06:57,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042580745] [2020-10-25 23:06:57,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 23:06:57,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:06:57,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 23:06:57,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 23:06:57,744 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 2 states. [2020-10-25 23:06:57,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:06:57,801 INFO L93 Difference]: Finished difference Result 463 states and 692 transitions. [2020-10-25 23:06:57,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 23:06:57,802 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-10-25 23:06:57,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:06:57,817 INFO L225 Difference]: With dead ends: 463 [2020-10-25 23:06:57,818 INFO L226 Difference]: Without dead ends: 229 [2020-10-25 23:06:57,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 23:06:57,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-25 23:06:57,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-10-25 23:06:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-25 23:06:57,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 336 transitions. [2020-10-25 23:06:57,893 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 336 transitions. Word has length 18 [2020-10-25 23:06:57,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:06:57,895 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 336 transitions. [2020-10-25 23:06:57,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 23:06:57,895 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 336 transitions. [2020-10-25 23:06:57,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-25 23:06:57,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:06:57,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:06:57,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 23:06:57,901 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:06:57,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:06:57,902 INFO L82 PathProgramCache]: Analyzing trace with hash -329174554, now seen corresponding path program 1 times [2020-10-25 23:06:57,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:06:57,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543492851] [2020-10-25 23:06:57,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:06:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:06:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:06:58,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543492851] [2020-10-25 23:06:58,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:06:58,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 23:06:58,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273331394] [2020-10-25 23:06:58,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 23:06:58,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:06:58,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 23:06:58,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:06:58,121 INFO L87 Difference]: Start difference. First operand 229 states and 336 transitions. Second operand 3 states. [2020-10-25 23:06:58,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:06:58,146 INFO L93 Difference]: Finished difference Result 229 states and 336 transitions. [2020-10-25 23:06:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 23:06:58,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-25 23:06:58,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:06:58,149 INFO L225 Difference]: With dead ends: 229 [2020-10-25 23:06:58,149 INFO L226 Difference]: Without dead ends: 87 [2020-10-25 23:06:58,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:06:58,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-25 23:06:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-25 23:06:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-25 23:06:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 127 transitions. [2020-10-25 23:06:58,163 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 127 transitions. Word has length 19 [2020-10-25 23:06:58,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:06:58,163 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 127 transitions. [2020-10-25 23:06:58,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 23:06:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 127 transitions. [2020-10-25 23:06:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-25 23:06:58,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:06:58,165 INFO L422 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] [2020-10-25 23:06:58,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 23:06:58,166 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:06:58,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:06:58,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1012740860, now seen corresponding path program 1 times [2020-10-25 23:06:58,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:06:58,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264001933] [2020-10-25 23:06:58,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:06:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:06:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:06:58,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264001933] [2020-10-25 23:06:58,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:06:58,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:06:58,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888939407] [2020-10-25 23:06:58,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:06:58,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:06:58,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:06:58,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:06:58,328 INFO L87 Difference]: Start difference. First operand 87 states and 127 transitions. Second operand 5 states. [2020-10-25 23:06:58,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:06:58,467 INFO L93 Difference]: Finished difference Result 193 states and 285 transitions. [2020-10-25 23:06:58,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 23:06:58,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-25 23:06:58,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:06:58,474 INFO L225 Difference]: With dead ends: 193 [2020-10-25 23:06:58,474 INFO L226 Difference]: Without dead ends: 112 [2020-10-25 23:06:58,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 23:06:58,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-25 23:06:58,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2020-10-25 23:06:58,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-25 23:06:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 159 transitions. [2020-10-25 23:06:58,521 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 159 transitions. Word has length 24 [2020-10-25 23:06:58,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:06:58,522 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 159 transitions. [2020-10-25 23:06:58,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:06:58,522 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 159 transitions. [2020-10-25 23:06:58,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-25 23:06:58,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:06:58,524 INFO L422 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] [2020-10-25 23:06:58,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 23:06:58,525 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:06:58,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:06:58,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1198598115, now seen corresponding path program 1 times [2020-10-25 23:06:58,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:06:58,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377886238] [2020-10-25 23:06:58,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:06:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:06:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:06:58,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377886238] [2020-10-25 23:06:58,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:06:58,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 23:06:58,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214295402] [2020-10-25 23:06:58,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 23:06:58,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:06:58,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 23:06:58,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:06:58,670 INFO L87 Difference]: Start difference. First operand 108 states and 159 transitions. Second operand 3 states. [2020-10-25 23:06:58,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:06:58,779 INFO L93 Difference]: Finished difference Result 218 states and 323 transitions. [2020-10-25 23:06:58,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 23:06:58,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-25 23:06:58,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:06:58,781 INFO L225 Difference]: With dead ends: 218 [2020-10-25 23:06:58,781 INFO L226 Difference]: Without dead ends: 116 [2020-10-25 23:06:58,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:06:58,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-25 23:06:58,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-25 23:06:58,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-25 23:06:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 162 transitions. [2020-10-25 23:06:58,813 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 162 transitions. Word has length 27 [2020-10-25 23:06:58,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:06:58,813 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 162 transitions. [2020-10-25 23:06:58,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 23:06:58,813 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 162 transitions. [2020-10-25 23:06:58,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-25 23:06:58,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:06:58,815 INFO L422 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] [2020-10-25 23:06:58,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 23:06:58,818 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:06:58,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:06:58,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1576081447, now seen corresponding path program 1 times [2020-10-25 23:06:58,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:06:58,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017791898] [2020-10-25 23:06:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:06:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:06:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:06:58,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017791898] [2020-10-25 23:06:58,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:06:58,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 23:06:58,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212634370] [2020-10-25 23:06:58,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:06:58,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:06:58,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:06:58,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:06:58,950 INFO L87 Difference]: Start difference. First operand 114 states and 162 transitions. Second operand 5 states. [2020-10-25 23:06:59,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:06:59,188 INFO L93 Difference]: Finished difference Result 578 states and 838 transitions. [2020-10-25 23:06:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 23:06:59,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-25 23:06:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:06:59,193 INFO L225 Difference]: With dead ends: 578 [2020-10-25 23:06:59,194 INFO L226 Difference]: Without dead ends: 470 [2020-10-25 23:06:59,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 23:06:59,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-10-25 23:06:59,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 183. [2020-10-25 23:06:59,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-25 23:06:59,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 255 transitions. [2020-10-25 23:06:59,219 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 255 transitions. Word has length 27 [2020-10-25 23:06:59,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:06:59,219 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 255 transitions. [2020-10-25 23:06:59,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:06:59,220 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 255 transitions. [2020-10-25 23:06:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-25 23:06:59,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:06:59,222 INFO L422 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] [2020-10-25 23:06:59,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 23:06:59,222 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:06:59,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:06:59,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1018622107, now seen corresponding path program 1 times [2020-10-25 23:06:59,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:06:59,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332081761] [2020-10-25 23:06:59,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:06:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 23:06:59,296 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 23:06:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 23:06:59,365 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 23:06:59,418 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 23:06:59,418 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 23:06:59,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 23:06:59,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 11:06:59 BoogieIcfgContainer [2020-10-25 23:06:59,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 23:06:59,565 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 23:06:59,565 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 23:06:59,566 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 23:06:59,566 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:06:57" (3/4) ... [2020-10-25 23:06:59,569 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 23:06:59,704 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 23:06:59,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 23:06:59,709 INFO L168 Benchmark]: Toolchain (without parser) took 4944.36 ms. Allocated memory was 44.0 MB in the beginning and 88.1 MB in the end (delta: 44.0 MB). Free memory was 29.2 MB in the beginning and 32.0 MB in the end (delta: -2.8 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. [2020-10-25 23:06:59,713 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 44.0 MB. Free memory was 27.1 MB in the beginning and 27.0 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 23:06:59,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 602.95 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 28.6 MB in the beginning and 26.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-10-25 23:06:59,716 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.01 ms. Allocated memory is still 54.5 MB. Free memory was 26.3 MB in the beginning and 35.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-10-25 23:06:59,717 INFO L168 Benchmark]: Boogie Preprocessor took 73.67 ms. Allocated memory is still 54.5 MB. Free memory was 35.2 MB in the beginning and 31.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 23:06:59,718 INFO L168 Benchmark]: RCFGBuilder took 1669.41 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 31.0 MB in the beginning and 31.1 MB in the end (delta: -34.7 kB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. [2020-10-25 23:06:59,722 INFO L168 Benchmark]: TraceAbstraction took 2306.40 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 30.6 MB in the beginning and 43.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-10-25 23:06:59,723 INFO L168 Benchmark]: Witness Printer took 138.75 ms. Allocated memory is still 88.1 MB. Free memory was 43.2 MB in the beginning and 32.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-25 23:06:59,730 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 44.0 MB. Free memory was 27.1 MB in the beginning and 27.0 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 602.95 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 28.6 MB in the beginning and 26.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 129.01 ms. Allocated memory is still 54.5 MB. Free memory was 26.3 MB in the beginning and 35.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.67 ms. Allocated memory is still 54.5 MB. Free memory was 35.2 MB in the beginning and 31.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1669.41 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 31.0 MB in the beginning and 31.1 MB in the end (delta: -34.7 kB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2306.40 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 30.6 MB in the beginning and 43.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Witness Printer took 138.75 ms. Allocated memory is still 88.1 MB. Free memory was 43.2 MB in the beginning and 32.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L92] int pumpRunning = 0; [L93] int systemActive = 1; [L429] int waterLevel = 1; [L430] int methaneLevelCritical = 0; [L701] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L898] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L971] int retValue_acc ; [L972] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L978] tmp = valid_product() [L980] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L360] int splverifierCounter ; [L361] int tmp ; [L362] int tmp___0 ; [L363] int tmp___1 ; [L364] int tmp___2 ; [L367] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L369] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L371] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L377] tmp = __VERIFIER_nondet_int() [L379] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L447] COND TRUE waterLevel < 2 [L448] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L387] tmp___0 = __VERIFIER_nondet_int() [L389] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L397] tmp___2 = __VERIFIER_nondet_int() [L399] COND FALSE !(\read(tmp___2)) [L405] tmp___1 = __VERIFIER_nondet_int() [L407] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L336] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L343] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L100] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L107] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L1004] int tmp ; [L1005] int tmp___0 ; [L1006] int tmp___1 ; [L468] int retValue_acc ; [L471] retValue_acc = methaneLevelCritical [L472] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L1010] tmp = isMethaneLevelCritical() [L1012] COND FALSE !(\read(tmp)) [L500] int retValue_acc ; [L503] retValue_acc = waterLevel [L504] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L1016] tmp___0 = getWaterLevel() [L1018] COND TRUE tmp___0 == 2 [L250] int retValue_acc ; [L253] retValue_acc = pumpRunning [L254] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L1020] tmp___1 = isPumpRunning() [L1022] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L3] __assert_fail("0", "minepump_spec3_product64.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 236 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 867 SDtfs, 1013 SDslu, 517 SDs, 0 SdLazy, 75 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 293 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 4928 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! Received shutdown request...