./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_175579ca-84a5-46fb-99a0-db105064ae15/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_175579ca-84a5-46fb-99a0-db105064ae15/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_175579ca-84a5-46fb-99a0-db105064ae15/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_175579ca-84a5-46fb-99a0-db105064ae15/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_175579ca-84a5-46fb-99a0-db105064ae15/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_175579ca-84a5-46fb-99a0-db105064ae15/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 0d6f6f11832d8f580d186172cf5d58d3f276ea91 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 12:45:39,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:45:39,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:45:39,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:45:39,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:45:39,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:45:39,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:45:39,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:45:39,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:45:39,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:45:39,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:45:39,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:45:39,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:45:39,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:45:39,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:45:39,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:45:39,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:45:39,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:45:39,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:45:39,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:45:39,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:45:39,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:45:39,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:45:39,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:45:39,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:45:39,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:45:39,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:45:39,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:45:39,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:45:39,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:45:39,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:45:39,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:45:39,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:45:39,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:45:39,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:45:39,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:45:39,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:45:39,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:45:39,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:45:39,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:45:39,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:45:39,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_175579ca-84a5-46fb-99a0-db105064ae15/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 12:45:39,307 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:45:39,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:45:39,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:45:39,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:45:39,308 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:45:39,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:45:39,308 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:45:39,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:45:39,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:45:39,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:45:39,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:45:39,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:45:39,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:45:39,309 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:45:39,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:45:39,309 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:45:39,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:45:39,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:45:39,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:45:39,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:45:39,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:45:39,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:45:39,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:45:39,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:45:39,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:45:39,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 12:45:39,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:45:39,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:45:39,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:45:39,311 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_175579ca-84a5-46fb-99a0-db105064ae15/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 -> 0d6f6f11832d8f580d186172cf5d58d3f276ea91 [2019-12-07 12:45:39,408 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:45:39,416 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:45:39,418 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:45:39,419 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:45:39,420 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:45:39,420 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_175579ca-84a5-46fb-99a0-db105064ae15/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2019-12-07 12:45:39,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_175579ca-84a5-46fb-99a0-db105064ae15/bin/uautomizer/data/e77c95b3d/441d8e55431943f9a4fd958345a278a6/FLAG4311a2fea [2019-12-07 12:45:39,895 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:45:39,895 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_175579ca-84a5-46fb-99a0-db105064ae15/sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2019-12-07 12:45:39,903 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_175579ca-84a5-46fb-99a0-db105064ae15/bin/uautomizer/data/e77c95b3d/441d8e55431943f9a4fd958345a278a6/FLAG4311a2fea [2019-12-07 12:45:39,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_175579ca-84a5-46fb-99a0-db105064ae15/bin/uautomizer/data/e77c95b3d/441d8e55431943f9a4fd958345a278a6 [2019-12-07 12:45:39,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:45:39,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:45:39,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:45:39,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:45:39,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:45:39,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:45:39" (1/1) ... [2019-12-07 12:45:39,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b211215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:45:39, skipping insertion in model container [2019-12-07 12:45:39,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:45:39" (1/1) ... [2019-12-07 12:45:39,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:45:39,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:45:40,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:45:40,174 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:45:40,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:45:40,243 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:45:40,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:45:40 WrapperNode [2019-12-07 12:45:40,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:45:40,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:45:40,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:45:40,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:45:40,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:45:40" (1/1) ... [2019-12-07 12:45:40,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:45:40" (1/1) ... [2019-12-07 12:45:40,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:45:40,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:45:40,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:45:40,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:45:40,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:45:40" (1/1) ... [2019-12-07 12:45:40,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:45:40" (1/1) ... [2019-12-07 12:45:40,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:45:40" (1/1) ... [2019-12-07 12:45:40,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:45:40" (1/1) ... [2019-12-07 12:45:40,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:45:40" (1/1) ... [2019-12-07 12:45:40,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:45:40" (1/1) ... [2019-12-07 12:45:40,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:45:40" (1/1) ... [2019-12-07 12:45:40,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:45:40,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:45:40,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:45:40,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:45:40,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:45:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_175579ca-84a5-46fb-99a0-db105064ae15/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 [2019-12-07 12:45:40,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 12:45:40,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-07 12:45:40,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:45:40,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:45:40,764 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:45:40,764 INFO L287 CfgBuilder]: Removed 160 assume(true) statements. [2019-12-07 12:45:40,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:45:40 BoogieIcfgContainer [2019-12-07 12:45:40,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:45:40,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:45:40,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:45:40,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:45:40,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:45:39" (1/3) ... [2019-12-07 12:45:40,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@897b00e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:45:40, skipping insertion in model container [2019-12-07 12:45:40,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:45:40" (2/3) ... [2019-12-07 12:45:40,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@897b00e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:45:40, skipping insertion in model container [2019-12-07 12:45:40,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:45:40" (3/3) ... [2019-12-07 12:45:40,770 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product51.cil.c [2019-12-07 12:45:40,776 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:45:40,781 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 12:45:40,789 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 12:45:40,804 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:45:40,805 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:45:40,805 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:45:40,805 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:45:40,805 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:45:40,805 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:45:40,805 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:45:40,805 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:45:40,817 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2019-12-07 12:45:40,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 12:45:40,822 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:45:40,822 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:45:40,823 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:45:40,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:45:40,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1844308238, now seen corresponding path program 1 times [2019-12-07 12:45:40,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:45:40,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513367339] [2019-12-07 12:45:40,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:45:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:45:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:45:40,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513367339] [2019-12-07 12:45:40,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:45:40,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:45:40,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904603245] [2019-12-07 12:45:40,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 12:45:40,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:45:40,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 12:45:40,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 12:45:40,997 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 2 states. [2019-12-07 12:45:41,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:45:41,019 INFO L93 Difference]: Finished difference Result 232 states and 353 transitions. [2019-12-07 12:45:41,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 12:45:41,020 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-12-07 12:45:41,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:45:41,028 INFO L225 Difference]: With dead ends: 232 [2019-12-07 12:45:41,028 INFO L226 Difference]: Without dead ends: 115 [2019-12-07 12:45:41,030 INFO L630 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 [2019-12-07 12:45:41,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-12-07 12:45:41,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2019-12-07 12:45:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-12-07 12:45:41,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2019-12-07 12:45:41,060 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 16 [2019-12-07 12:45:41,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:45:41,060 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2019-12-07 12:45:41,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 12:45:41,061 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2019-12-07 12:45:41,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 12:45:41,061 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:45:41,061 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:45:41,062 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:45:41,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:45:41,062 INFO L82 PathProgramCache]: Analyzing trace with hash -323074868, now seen corresponding path program 1 times [2019-12-07 12:45:41,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:45:41,062 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141982890] [2019-12-07 12:45:41,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:45:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:45:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:45:41,122 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141982890] [2019-12-07 12:45:41,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:45:41,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 12:45:41,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025090090] [2019-12-07 12:45:41,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:45:41,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:45:41,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:45:41,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:45:41,124 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand 3 states. [2019-12-07 12:45:41,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:45:41,132 INFO L93 Difference]: Finished difference Result 115 states and 168 transitions. [2019-12-07 12:45:41,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:45:41,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-12-07 12:45:41,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:45:41,134 INFO L225 Difference]: With dead ends: 115 [2019-12-07 12:45:41,134 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 12:45:41,135 INFO L630 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 [2019-12-07 12:45:41,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 12:45:41,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2019-12-07 12:45:41,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-12-07 12:45:41,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2019-12-07 12:45:41,139 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 17 [2019-12-07 12:45:41,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:45:41,139 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2019-12-07 12:45:41,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:45:41,139 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2019-12-07 12:45:41,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 12:45:41,140 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:45:41,140 INFO L410 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] [2019-12-07 12:45:41,140 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:45:41,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:45:41,140 INFO L82 PathProgramCache]: Analyzing trace with hash -426243093, now seen corresponding path program 1 times [2019-12-07 12:45:41,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:45:41,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112538630] [2019-12-07 12:45:41,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:45:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:45:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:45:41,188 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112538630] [2019-12-07 12:45:41,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:45:41,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:45:41,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331581982] [2019-12-07 12:45:41,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:45:41,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:45:41,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:45:41,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:45:41,189 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand 3 states. [2019-12-07 12:45:41,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:45:41,204 INFO L93 Difference]: Finished difference Result 135 states and 201 transitions. [2019-12-07 12:45:41,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:45:41,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-12-07 12:45:41,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:45:41,206 INFO L225 Difference]: With dead ends: 135 [2019-12-07 12:45:41,206 INFO L226 Difference]: Without dead ends: 92 [2019-12-07 12:45:41,207 INFO L630 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 [2019-12-07 12:45:41,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-12-07 12:45:41,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2019-12-07 12:45:41,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-12-07 12:45:41,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 131 transitions. [2019-12-07 12:45:41,218 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 131 transitions. Word has length 22 [2019-12-07 12:45:41,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:45:41,218 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 131 transitions. [2019-12-07 12:45:41,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:45:41,218 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 131 transitions. [2019-12-07 12:45:41,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 12:45:41,219 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:45:41,219 INFO L410 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] [2019-12-07 12:45:41,219 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:45:41,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:45:41,220 INFO L82 PathProgramCache]: Analyzing trace with hash 844046893, now seen corresponding path program 1 times [2019-12-07 12:45:41,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:45:41,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714224612] [2019-12-07 12:45:41,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:45:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:45:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:45:41,254 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714224612] [2019-12-07 12:45:41,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:45:41,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:45:41,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732032204] [2019-12-07 12:45:41,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:45:41,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:45:41,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:45:41,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:45:41,256 INFO L87 Difference]: Start difference. First operand 88 states and 131 transitions. Second operand 3 states. [2019-12-07 12:45:41,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:45:41,284 INFO L93 Difference]: Finished difference Result 211 states and 318 transitions. [2019-12-07 12:45:41,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:45:41,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-12-07 12:45:41,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:45:41,285 INFO L225 Difference]: With dead ends: 211 [2019-12-07 12:45:41,285 INFO L226 Difference]: Without dead ends: 129 [2019-12-07 12:45:41,286 INFO L630 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 [2019-12-07 12:45:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-12-07 12:45:41,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2019-12-07 12:45:41,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-12-07 12:45:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 185 transitions. [2019-12-07 12:45:41,295 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 185 transitions. Word has length 24 [2019-12-07 12:45:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:45:41,296 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 185 transitions. [2019-12-07 12:45:41,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:45:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 185 transitions. [2019-12-07 12:45:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 12:45:41,297 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:45:41,297 INFO L410 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] [2019-12-07 12:45:41,297 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:45:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:45:41,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1604149312, now seen corresponding path program 1 times [2019-12-07 12:45:41,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:45:41,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353676803] [2019-12-07 12:45:41,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:45:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:45:41,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:45:41,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353676803] [2019-12-07 12:45:41,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:45:41,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 12:45:41,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273964585] [2019-12-07 12:45:41,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:45:41,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:45:41,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:45:41,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:45:41,339 INFO L87 Difference]: Start difference. First operand 127 states and 185 transitions. Second operand 5 states. [2019-12-07 12:45:41,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:45:41,403 INFO L93 Difference]: Finished difference Result 683 states and 1014 transitions. [2019-12-07 12:45:41,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 12:45:41,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-12-07 12:45:41,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:45:41,406 INFO L225 Difference]: With dead ends: 683 [2019-12-07 12:45:41,406 INFO L226 Difference]: Without dead ends: 562 [2019-12-07 12:45:41,407 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 12:45:41,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2019-12-07 12:45:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 238. [2019-12-07 12:45:41,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-12-07 12:45:41,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 343 transitions. [2019-12-07 12:45:41,426 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 343 transitions. Word has length 25 [2019-12-07 12:45:41,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:45:41,426 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 343 transitions. [2019-12-07 12:45:41,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:45:41,426 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 343 transitions. [2019-12-07 12:45:41,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 12:45:41,427 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:45:41,428 INFO L410 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] [2019-12-07 12:45:41,428 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:45:41,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:45:41,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1807956406, now seen corresponding path program 1 times [2019-12-07 12:45:41,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:45:41,428 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865372770] [2019-12-07 12:45:41,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:45:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:45:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:45:41,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865372770] [2019-12-07 12:45:41,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:45:41,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 12:45:41,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436084295] [2019-12-07 12:45:41,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:45:41,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:45:41,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:45:41,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:45:41,473 INFO L87 Difference]: Start difference. First operand 238 states and 343 transitions. Second operand 5 states. [2019-12-07 12:45:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:45:41,592 INFO L93 Difference]: Finished difference Result 684 states and 990 transitions. [2019-12-07 12:45:41,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 12:45:41,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-12-07 12:45:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:45:41,597 INFO L225 Difference]: With dead ends: 684 [2019-12-07 12:45:41,598 INFO L226 Difference]: Without dead ends: 682 [2019-12-07 12:45:41,598 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 12:45:41,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-12-07 12:45:41,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 238. [2019-12-07 12:45:41,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-12-07 12:45:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 341 transitions. [2019-12-07 12:45:41,622 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 341 transitions. Word has length 26 [2019-12-07 12:45:41,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:45:41,622 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 341 transitions. [2019-12-07 12:45:41,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:45:41,622 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 341 transitions. [2019-12-07 12:45:41,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 12:45:41,624 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:45:41,624 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:45:41,624 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:45:41,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:45:41,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1131451540, now seen corresponding path program 1 times [2019-12-07 12:45:41,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:45:41,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132262517] [2019-12-07 12:45:41,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:45:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:45:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:45:41,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132262517] [2019-12-07 12:45:41,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:45:41,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 12:45:41,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104555164] [2019-12-07 12:45:41,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:45:41,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:45:41,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:45:41,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:45:41,672 INFO L87 Difference]: Start difference. First operand 238 states and 341 transitions. Second operand 5 states. [2019-12-07 12:45:41,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:45:41,731 INFO L93 Difference]: Finished difference Result 650 states and 916 transitions. [2019-12-07 12:45:41,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 12:45:41,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-12-07 12:45:41,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:45:41,734 INFO L225 Difference]: With dead ends: 650 [2019-12-07 12:45:41,734 INFO L226 Difference]: Without dead ends: 418 [2019-12-07 12:45:41,735 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 12:45:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2019-12-07 12:45:41,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 262. [2019-12-07 12:45:41,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2019-12-07 12:45:41,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 365 transitions. [2019-12-07 12:45:41,749 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 365 transitions. Word has length 31 [2019-12-07 12:45:41,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:45:41,749 INFO L462 AbstractCegarLoop]: Abstraction has 262 states and 365 transitions. [2019-12-07 12:45:41,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:45:41,750 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 365 transitions. [2019-12-07 12:45:41,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 12:45:41,750 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:45:41,751 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:45:41,751 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:45:41,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:45:41,751 INFO L82 PathProgramCache]: Analyzing trace with hash 738424530, now seen corresponding path program 1 times [2019-12-07 12:45:41,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:45:41,752 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149011398] [2019-12-07 12:45:41,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:45:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:45:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:45:41,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149011398] [2019-12-07 12:45:41,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:45:41,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 12:45:41,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185526780] [2019-12-07 12:45:41,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:45:41,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:45:41,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:45:41,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:45:41,802 INFO L87 Difference]: Start difference. First operand 262 states and 365 transitions. Second operand 5 states. [2019-12-07 12:45:41,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:45:41,884 INFO L93 Difference]: Finished difference Result 734 states and 1001 transitions. [2019-12-07 12:45:41,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 12:45:41,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-12-07 12:45:41,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:45:41,886 INFO L225 Difference]: With dead ends: 734 [2019-12-07 12:45:41,886 INFO L226 Difference]: Without dead ends: 478 [2019-12-07 12:45:41,887 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 12:45:41,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2019-12-07 12:45:41,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 278. [2019-12-07 12:45:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-12-07 12:45:41,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 381 transitions. [2019-12-07 12:45:41,901 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 381 transitions. Word has length 31 [2019-12-07 12:45:41,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:45:41,901 INFO L462 AbstractCegarLoop]: Abstraction has 278 states and 381 transitions. [2019-12-07 12:45:41,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:45:41,902 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 381 transitions. [2019-12-07 12:45:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-07 12:45:41,902 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:45:41,902 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:45:41,902 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:45:41,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:45:41,903 INFO L82 PathProgramCache]: Analyzing trace with hash 996589968, now seen corresponding path program 1 times [2019-12-07 12:45:41,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:45:41,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33927343] [2019-12-07 12:45:41,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:45:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:45:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:45:41,929 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33927343] [2019-12-07 12:45:41,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:45:41,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:45:41,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563198285] [2019-12-07 12:45:41,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 12:45:41,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:45:41,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 12:45:41,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 12:45:41,930 INFO L87 Difference]: Start difference. First operand 278 states and 381 transitions. Second operand 3 states. [2019-12-07 12:45:41,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:45:41,958 INFO L93 Difference]: Finished difference Result 654 states and 890 transitions. [2019-12-07 12:45:41,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 12:45:41,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-12-07 12:45:41,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:45:41,960 INFO L225 Difference]: With dead ends: 654 [2019-12-07 12:45:41,960 INFO L226 Difference]: Without dead ends: 382 [2019-12-07 12:45:41,961 INFO L630 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 [2019-12-07 12:45:41,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2019-12-07 12:45:41,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2019-12-07 12:45:41,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2019-12-07 12:45:41,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 507 transitions. [2019-12-07 12:45:41,980 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 507 transitions. Word has length 31 [2019-12-07 12:45:41,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:45:41,981 INFO L462 AbstractCegarLoop]: Abstraction has 382 states and 507 transitions. [2019-12-07 12:45:41,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 12:45:41,981 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 507 transitions. [2019-12-07 12:45:41,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 12:45:41,981 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:45:41,981 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:45:41,982 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:45:41,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:45:41,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1116169902, now seen corresponding path program 1 times [2019-12-07 12:45:41,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:45:41,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709871330] [2019-12-07 12:45:41,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:45:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:45:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:45:42,069 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:45:42,069 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 12:45:42,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:45:42 BoogieIcfgContainer [2019-12-07 12:45:42,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:45:42,132 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:45:42,133 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:45:42,133 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:45:42,133 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:45:40" (3/4) ... [2019-12-07 12:45:42,135 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 12:45:42,192 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_175579ca-84a5-46fb-99a0-db105064ae15/bin/uautomizer/witness.graphml [2019-12-07 12:45:42,192 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:45:42,194 INFO L168 Benchmark]: Toolchain (without parser) took 2278.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 946.2 MB in the beginning and 993.6 MB in the end (delta: -47.3 MB). Peak memory consumption was 68.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:45:42,194 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:45:42,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -158.6 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2019-12-07 12:45:42,194 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.46 ms. Allocated memory is still 1.1 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. [2019-12-07 12:45:42,194 INFO L168 Benchmark]: Boogie Preprocessor took 29.48 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:45:42,195 INFO L168 Benchmark]: RCFGBuilder took 448.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:45:42,195 INFO L168 Benchmark]: TraceAbstraction took 1366.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2019-12-07 12:45:42,195 INFO L168 Benchmark]: Witness Printer took 59.68 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 993.6 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2019-12-07 12:45:42,196 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 328.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -158.6 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.46 ms. Allocated memory is still 1.1 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 29.48 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 448.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1366.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. * Witness Printer took 59.68 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 993.6 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 704]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L121] int pumpRunning = 0; [L122] int systemActive = 1; [L503] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L773] int cleanupTimeShifts = 4; [L870] int waterLevel = 1; [L871] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L846] int retValue_acc ; [L847] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L738] int retValue_acc ; [L741] retValue_acc = 1 [L742] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L853] tmp = valid_product() [L855] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L55] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L57] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L888] COND TRUE waterLevel < 2 [L889] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L900] COND FALSE !(\read(methaneLevelCritical)) [L903] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L129] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L136] COND TRUE \read(systemActive) [L184] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L187] COND FALSE !(\read(pumpRunning)) [L158] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L161] COND TRUE ! pumpRunning [L281] int retValue_acc ; [L282] int tmp ; [L283] int tmp___0 ; [L950] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L953] COND FALSE !(waterLevel < 2) [L957] retValue_acc = 0 [L958] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L287] tmp = isHighWaterSensorDry() [L289] COND FALSE !(\read(tmp)) [L292] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L294] retValue_acc = tmp___0 [L295] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L163] tmp = isHighWaterLevel() [L165] COND TRUE \read(tmp) [L212] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L748] int tmp ; [L749] int tmp___0 ; [L909] int retValue_acc ; [L912] retValue_acc = methaneLevelCritical [L913] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L753] tmp = isMethaneLevelCritical() [L755] COND TRUE \read(tmp) [L236] int retValue_acc ; [L239] retValue_acc = pumpRunning [L240] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L757] tmp___0 = isPumpRunning() [L759] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L704] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 119 locations, 3 error locations. Result: UNSAFE, OverallTime: 1.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 875 SDtfs, 1188 SDslu, 1284 SDs, 0 SdLazy, 160 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=382occurred in iteration=9, 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, 9 MinimizatonAttempts, 1130 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 11496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...