./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2c82d456-d026-4c8d-9abb-ec039ffa9a6b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2c82d456-d026-4c8d-9abb-ec039ffa9a6b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2c82d456-d026-4c8d-9abb-ec039ffa9a6b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2c82d456-d026-4c8d-9abb-ec039ffa9a6b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2c82d456-d026-4c8d-9abb-ec039ffa9a6b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2c82d456-d026-4c8d-9abb-ec039ffa9a6b/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9033da3093a23b8640383fad25d5fd5dfea2cc28 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.24-cad4683 [2019-11-15 22:02:20,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:02:20,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:02:20,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:02:20,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:02:20,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:02:20,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:02:20,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:02:20,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:02:20,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:02:20,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:02:20,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:02:20,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:02:20,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:02:20,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:02:20,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:02:20,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:02:20,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:02:20,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:02:20,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:02:20,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:02:20,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:02:20,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:02:20,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:02:20,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:02:20,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:02:20,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:02:20,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:02:20,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:02:20,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:02:20,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:02:20,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:02:20,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:02:20,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:02:20,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:02:20,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:02:20,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:02:20,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:02:20,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:02:20,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:02:20,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:02:20,270 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2c82d456-d026-4c8d-9abb-ec039ffa9a6b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:02:20,287 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:02:20,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:02:20,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:02:20,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:02:20,289 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:02:20,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:02:20,290 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:02:20,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:02:20,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:02:20,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:02:20,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:02:20,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:02:20,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:02:20,292 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:02:20,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:02:20,293 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:02:20,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:02:20,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:02:20,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:02:20,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:02:20,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:02:20,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:02:20,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:02:20,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:02:20,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:02:20,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:02:20,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:02:20,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:02:20,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_2c82d456-d026-4c8d-9abb-ec039ffa9a6b/bin/uautomizer 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(__VERIFIER_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 -> 9033da3093a23b8640383fad25d5fd5dfea2cc28 [2019-11-15 22:02:20,330 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:02:20,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:02:20,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:02:20,348 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:02:20,349 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:02:20,349 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2c82d456-d026-4c8d-9abb-ec039ffa9a6b/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c [2019-11-15 22:02:20,402 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2c82d456-d026-4c8d-9abb-ec039ffa9a6b/bin/uautomizer/data/ee91bbb61/9438631cbb394753813ea565c7468891/FLAGe2b14c51a [2019-11-15 22:02:20,953 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:02:20,959 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2c82d456-d026-4c8d-9abb-ec039ffa9a6b/sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c [2019-11-15 22:02:20,973 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2c82d456-d026-4c8d-9abb-ec039ffa9a6b/bin/uautomizer/data/ee91bbb61/9438631cbb394753813ea565c7468891/FLAGe2b14c51a [2019-11-15 22:02:21,259 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2c82d456-d026-4c8d-9abb-ec039ffa9a6b/bin/uautomizer/data/ee91bbb61/9438631cbb394753813ea565c7468891 [2019-11-15 22:02:21,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:02:21,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:02:21,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:02:21,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:02:21,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:02:21,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:02:21" (1/1) ... [2019-11-15 22:02:21,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eeadc14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:02:21, skipping insertion in model container [2019-11-15 22:02:21,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:02:21" (1/1) ... [2019-11-15 22:02:21,285 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:02:21,340 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:02:21,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:02:21,820 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:02:21,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:02:22,000 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:02:22,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:02:22 WrapperNode [2019-11-15 22:02:22,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:02:22,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:02:22,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:02:22,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:02:22,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:02:22" (1/1) ... [2019-11-15 22:02:22,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:02:22" (1/1) ... [2019-11-15 22:02:22,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:02:22,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:02:22,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:02:22,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:02:22,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:02:22" (1/1) ... [2019-11-15 22:02:22,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:02:22" (1/1) ... [2019-11-15 22:02:22,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:02:22" (1/1) ... [2019-11-15 22:02:22,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:02:22" (1/1) ... [2019-11-15 22:02:22,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:02:22" (1/1) ... [2019-11-15 22:02:22,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:02:22" (1/1) ... [2019-11-15 22:02:22,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:02:22" (1/1) ... [2019-11-15 22:02:22,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:02:22,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:02:22,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:02:22,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:02:22,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:02:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2c82d456-d026-4c8d-9abb-ec039ffa9a6b/bin/uautomizer/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 [2019-11-15 22:02:22,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:02:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-15 22:02:22,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:02:22,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:02:23,330 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:02:23,330 INFO L284 CfgBuilder]: Removed 166 assume(true) statements. [2019-11-15 22:02:23,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:02:23 BoogieIcfgContainer [2019-11-15 22:02:23,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:02:23,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:02:23,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:02:23,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:02:23,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:02:21" (1/3) ... [2019-11-15 22:02:23,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727b9d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:02:23, skipping insertion in model container [2019-11-15 22:02:23,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:02:22" (2/3) ... [2019-11-15 22:02:23,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727b9d9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:02:23, skipping insertion in model container [2019-11-15 22:02:23,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:02:23" (3/3) ... [2019-11-15 22:02:23,342 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product51.cil.c [2019-11-15 22:02:23,353 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:02:23,362 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-15 22:02:23,375 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-15 22:02:23,403 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:02:23,403 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:02:23,403 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:02:23,403 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:02:23,403 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:02:23,404 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:02:23,404 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:02:23,404 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:02:23,423 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2019-11-15 22:02:23,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 22:02:23,433 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:02:23,434 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:02:23,436 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:02:23,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:02:23,441 INFO L82 PathProgramCache]: Analyzing trace with hash 335687254, now seen corresponding path program 1 times [2019-11-15 22:02:23,449 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:02:23,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108492814] [2019-11-15 22:02:23,450 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:02:23,450 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:02:23,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:02:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:02:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:02:23,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108492814] [2019-11-15 22:02:23,697 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:02:23,698 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 22:02:23,698 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648219465] [2019-11-15 22:02:23,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 22:02:23,703 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:02:23,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 22:02:23,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 22:02:23,722 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 2 states. [2019-11-15 22:02:23,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:02:23,761 INFO L93 Difference]: Finished difference Result 244 states and 371 transitions. [2019-11-15 22:02:23,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 22:02:23,763 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-11-15 22:02:23,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:02:23,776 INFO L225 Difference]: With dead ends: 244 [2019-11-15 22:02:23,776 INFO L226 Difference]: Without dead ends: 121 [2019-11-15 22:02:23,780 INFO L600 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 [2019-11-15 22:02:23,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-11-15 22:02:23,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2019-11-15 22:02:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-11-15 22:02:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 177 transitions. [2019-11-15 22:02:23,834 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 177 transitions. Word has length 18 [2019-11-15 22:02:23,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:02:23,844 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 177 transitions. [2019-11-15 22:02:23,844 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 22:02:23,844 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 177 transitions. [2019-11-15 22:02:23,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 22:02:23,846 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:02:23,846 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:02:23,847 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:02:23,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:02:23,847 INFO L82 PathProgramCache]: Analyzing trace with hash -575343499, now seen corresponding path program 1 times [2019-11-15 22:02:23,847 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:02:23,848 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619458090] [2019-11-15 22:02:23,848 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:02:23,848 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:02:23,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:02:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:02:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:02:24,032 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619458090] [2019-11-15 22:02:24,032 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:02:24,032 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:02:24,033 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141431456] [2019-11-15 22:02:24,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 22:02:24,034 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:02:24,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 22:02:24,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:02:24,035 INFO L87 Difference]: Start difference. First operand 121 states and 177 transitions. Second operand 3 states. [2019-11-15 22:02:24,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:02:24,052 INFO L93 Difference]: Finished difference Result 121 states and 177 transitions. [2019-11-15 22:02:24,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 22:02:24,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-15 22:02:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:02:24,054 INFO L225 Difference]: With dead ends: 121 [2019-11-15 22:02:24,054 INFO L226 Difference]: Without dead ends: 51 [2019-11-15 22:02:24,056 INFO L600 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 [2019-11-15 22:02:24,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-15 22:02:24,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-11-15 22:02:24,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-15 22:02:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 74 transitions. [2019-11-15 22:02:24,064 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 74 transitions. Word has length 19 [2019-11-15 22:02:24,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:02:24,064 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 74 transitions. [2019-11-15 22:02:24,065 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 22:02:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 74 transitions. [2019-11-15 22:02:24,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 22:02:24,066 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:02:24,066 INFO L380 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] [2019-11-15 22:02:24,067 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:02:24,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:02:24,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1538545843, now seen corresponding path program 1 times [2019-11-15 22:02:24,067 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:02:24,068 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100680281] [2019-11-15 22:02:24,068 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:02:24,068 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:02:24,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:02:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:02:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:02:24,266 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100680281] [2019-11-15 22:02:24,266 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:02:24,267 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:02:24,267 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458031805] [2019-11-15 22:02:24,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:02:24,267 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:02:24,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:02:24,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:02:24,268 INFO L87 Difference]: Start difference. First operand 51 states and 74 transitions. Second operand 6 states. [2019-11-15 22:02:24,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:02:24,409 INFO L93 Difference]: Finished difference Result 166 states and 247 transitions. [2019-11-15 22:02:24,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:02:24,410 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-15 22:02:24,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:02:24,412 INFO L225 Difference]: With dead ends: 166 [2019-11-15 22:02:24,412 INFO L226 Difference]: Without dead ends: 121 [2019-11-15 22:02:24,413 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:02:24,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-11-15 22:02:24,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 72. [2019-11-15 22:02:24,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-15 22:02:24,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 106 transitions. [2019-11-15 22:02:24,428 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 106 transitions. Word has length 24 [2019-11-15 22:02:24,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:02:24,429 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 106 transitions. [2019-11-15 22:02:24,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:02:24,429 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 106 transitions. [2019-11-15 22:02:24,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-15 22:02:24,430 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:02:24,431 INFO L380 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] [2019-11-15 22:02:24,431 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:02:24,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:02:24,432 INFO L82 PathProgramCache]: Analyzing trace with hash -560581361, now seen corresponding path program 1 times [2019-11-15 22:02:24,432 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:02:24,432 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294347753] [2019-11-15 22:02:24,433 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:02:24,433 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:02:24,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:02:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:02:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:02:24,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294347753] [2019-11-15 22:02:24,497 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:02:24,498 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 22:02:24,498 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607360050] [2019-11-15 22:02:24,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 22:02:24,499 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:02:24,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 22:02:24,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:02:24,499 INFO L87 Difference]: Start difference. First operand 72 states and 106 transitions. Second operand 3 states. [2019-11-15 22:02:24,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:02:24,570 INFO L93 Difference]: Finished difference Result 161 states and 239 transitions. [2019-11-15 22:02:24,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 22:02:24,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-11-15 22:02:24,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:02:24,573 INFO L225 Difference]: With dead ends: 161 [2019-11-15 22:02:24,573 INFO L226 Difference]: Without dead ends: 95 [2019-11-15 22:02:24,574 INFO L600 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 [2019-11-15 22:02:24,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-11-15 22:02:24,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2019-11-15 22:02:24,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2019-11-15 22:02:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 133 transitions. [2019-11-15 22:02:24,602 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 133 transitions. Word has length 26 [2019-11-15 22:02:24,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:02:24,603 INFO L462 AbstractCegarLoop]: Abstraction has 93 states and 133 transitions. [2019-11-15 22:02:24,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 22:02:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 133 transitions. [2019-11-15 22:02:24,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-15 22:02:24,606 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:02:24,607 INFO L380 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] [2019-11-15 22:02:24,607 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:02:24,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:02:24,608 INFO L82 PathProgramCache]: Analyzing trace with hash 364943842, now seen corresponding path program 1 times [2019-11-15 22:02:24,608 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:02:24,609 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358741381] [2019-11-15 22:02:24,609 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:02:24,609 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:02:24,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:02:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:02:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:02:24,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358741381] [2019-11-15 22:02:24,719 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:02:24,719 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:02:24,719 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215197336] [2019-11-15 22:02:24,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:02:24,720 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:02:24,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:02:24,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:02:24,721 INFO L87 Difference]: Start difference. First operand 93 states and 133 transitions. Second operand 5 states. [2019-11-15 22:02:24,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:02:24,940 INFO L93 Difference]: Finished difference Result 482 states and 707 transitions. [2019-11-15 22:02:24,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:02:24,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-11-15 22:02:24,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:02:24,945 INFO L225 Difference]: With dead ends: 482 [2019-11-15 22:02:24,945 INFO L226 Difference]: Without dead ends: 395 [2019-11-15 22:02:24,947 INFO L600 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 [2019-11-15 22:02:24,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2019-11-15 22:02:24,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 158. [2019-11-15 22:02:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2019-11-15 22:02:24,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 221 transitions. [2019-11-15 22:02:24,976 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 221 transitions. Word has length 27 [2019-11-15 22:02:24,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:02:24,977 INFO L462 AbstractCegarLoop]: Abstraction has 158 states and 221 transitions. [2019-11-15 22:02:24,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:02:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 221 transitions. [2019-11-15 22:02:24,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-15 22:02:24,979 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:02:24,979 INFO L380 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] [2019-11-15 22:02:24,982 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:02:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:02:24,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1335319900, now seen corresponding path program 1 times [2019-11-15 22:02:24,983 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:02:24,983 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228735350] [2019-11-15 22:02:24,983 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:02:24,984 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:02:24,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:02:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:02:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:02:25,902 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:02:25,902 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 22:02:26,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:02:26 BoogieIcfgContainer [2019-11-15 22:02:26,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:02:26,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:02:26,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:02:26,072 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:02:26,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:02:23" (3/4) ... [2019-11-15 22:02:26,075 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 22:02:26,193 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2c82d456-d026-4c8d-9abb-ec039ffa9a6b/bin/uautomizer/witness.graphml [2019-11-15 22:02:26,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:02:26,196 INFO L168 Benchmark]: Toolchain (without parser) took 4932.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 946.1 MB in the beginning and 1.0 GB in the end (delta: -69.9 MB). Peak memory consumption was 68.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:02:26,196 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:02:26,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 737.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-15 22:02:26,198 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:02:26,198 INFO L168 Benchmark]: Boogie Preprocessor took 66.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:02:26,199 INFO L168 Benchmark]: RCFGBuilder took 1171.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.3 MB). Peak memory consumption was 65.3 MB. Max. memory is 11.5 GB. [2019-11-15 22:02:26,199 INFO L168 Benchmark]: TraceAbstraction took 2737.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:02:26,200 INFO L168 Benchmark]: Witness Printer took 122.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. [2019-11-15 22:02:26,202 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 737.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 91.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1171.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.3 MB). Peak memory consumption was 65.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2737.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. * Witness Printer took 122.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 977]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L225] int pumpRunning = 0; [L226] int systemActive = 1; [L473] int cleanupTimeShifts = 4; [L776] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L549] int retValue_acc ; [L550] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L598] int retValue_acc ; [L601] retValue_acc = 1 [L602] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L556] tmp = valid_product() [L558] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L155] int splverifierCounter ; [L156] int tmp ; [L157] int tmp___0 ; [L158] int tmp___1 ; [L159] int tmp___2 ; [L162] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L164] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L166] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L172] tmp = __VERIFIER_nondet_int() [L174] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L182] tmp___0 = __VERIFIER_nondet_int() [L184] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L192] tmp___2 = __VERIFIER_nondet_int() [L194] COND FALSE !(\read(tmp___2)) [L198] tmp___1 = __VERIFIER_nondet_int() [L200] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L426] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L433] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L233] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L240] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L440] int tmp ; [L441] int tmp___0 ; [L442] int tmp___1 ; [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L446] tmp = isMethaneLevelCritical() [L448] COND FALSE !(\read(tmp)) [L119] int retValue_acc ; [L122] retValue_acc = waterLevel [L123] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L452] tmp___0 = getWaterLevel() [L454] COND TRUE tmp___0 == 2 [L340] int retValue_acc ; [L343] retValue_acc = pumpRunning [L344] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L456] tmp___1 = isPumpRunning() [L458] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L977] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 125 locations, 3 error locations. Result: UNSAFE, OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 517 SDtfs, 655 SDslu, 669 SDs, 0 SdLazy, 81 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=5, 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, 288 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 5504 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...