./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_107a67c4-ca52-4a52-8126-3bdbccb70c70/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_107a67c4-ca52-4a52-8126-3bdbccb70c70/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_107a67c4-ca52-4a52-8126-3bdbccb70c70/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_107a67c4-ca52-4a52-8126-3bdbccb70c70/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_107a67c4-ca52-4a52-8126-3bdbccb70c70/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_107a67c4-ca52-4a52-8126-3bdbccb70c70/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 903a1f53bc072e1ab483040d7a35aae5e2bdf412 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-678e011 [2019-11-20 00:19:11,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 00:19:11,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 00:19:11,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 00:19:11,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 00:19:11,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 00:19:11,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 00:19:11,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 00:19:11,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 00:19:11,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 00:19:11,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 00:19:11,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 00:19:11,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 00:19:11,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 00:19:11,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 00:19:11,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 00:19:11,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 00:19:11,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 00:19:11,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 00:19:11,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 00:19:11,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 00:19:11,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 00:19:11,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 00:19:11,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 00:19:11,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 00:19:11,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 00:19:11,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 00:19:11,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 00:19:11,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 00:19:11,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 00:19:11,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 00:19:11,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 00:19:11,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 00:19:11,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 00:19:11,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 00:19:11,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 00:19:11,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 00:19:11,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 00:19:11,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 00:19:11,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 00:19:11,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 00:19:11,573 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_107a67c4-ca52-4a52-8126-3bdbccb70c70/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 00:19:11,585 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 00:19:11,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 00:19:11,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 00:19:11,587 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 00:19:11,587 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 00:19:11,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 00:19:11,587 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 00:19:11,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 00:19:11,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 00:19:11,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 00:19:11,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 00:19:11,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 00:19:11,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 00:19:11,589 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 00:19:11,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 00:19:11,589 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 00:19:11,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 00:19:11,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 00:19:11,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 00:19:11,590 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 00:19:11,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 00:19:11,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:19:11,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 00:19:11,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 00:19:11,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 00:19:11,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 00:19:11,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 00:19:11,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 00:19:11,592 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_107a67c4-ca52-4a52-8126-3bdbccb70c70/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 -> 903a1f53bc072e1ab483040d7a35aae5e2bdf412 [2019-11-20 00:19:11,725 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 00:19:11,734 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 00:19:11,738 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 00:19:11,739 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 00:19:11,739 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 00:19:11,740 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_107a67c4-ca52-4a52-8126-3bdbccb70c70/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2019-11-20 00:19:11,797 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_107a67c4-ca52-4a52-8126-3bdbccb70c70/bin/uautomizer/data/ae031bd02/4c9543cc4ac24f8ba817e9ae3618e22b/FLAG791d91544 [2019-11-20 00:19:12,298 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 00:19:12,299 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_107a67c4-ca52-4a52-8126-3bdbccb70c70/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2019-11-20 00:19:12,327 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_107a67c4-ca52-4a52-8126-3bdbccb70c70/bin/uautomizer/data/ae031bd02/4c9543cc4ac24f8ba817e9ae3618e22b/FLAG791d91544 [2019-11-20 00:19:12,610 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_107a67c4-ca52-4a52-8126-3bdbccb70c70/bin/uautomizer/data/ae031bd02/4c9543cc4ac24f8ba817e9ae3618e22b [2019-11-20 00:19:12,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 00:19:12,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 00:19:12,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 00:19:12,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 00:19:12,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 00:19:12,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:19:12" (1/1) ... [2019-11-20 00:19:12,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447092d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:12, skipping insertion in model container [2019-11-20 00:19:12,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:19:12" (1/1) ... [2019-11-20 00:19:12,627 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 00:19:12,674 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 00:19:13,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:19:13,098 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 00:19:13,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:19:13,248 INFO L192 MainTranslator]: Completed translation [2019-11-20 00:19:13,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:13 WrapperNode [2019-11-20 00:19:13,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 00:19:13,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 00:19:13,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 00:19:13,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 00:19:13,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:13" (1/1) ... [2019-11-20 00:19:13,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:13" (1/1) ... [2019-11-20 00:19:13,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 00:19:13,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 00:19:13,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 00:19:13,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 00:19:13,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:13" (1/1) ... [2019-11-20 00:19:13,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:13" (1/1) ... [2019-11-20 00:19:13,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:13" (1/1) ... [2019-11-20 00:19:13,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:13" (1/1) ... [2019-11-20 00:19:13,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:13" (1/1) ... [2019-11-20 00:19:13,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:13" (1/1) ... [2019-11-20 00:19:13,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:13" (1/1) ... [2019-11-20 00:19:13,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 00:19:13,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 00:19:13,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 00:19:13,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 00:19:13,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_107a67c4-ca52-4a52-8126-3bdbccb70c70/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 [2019-11-20 00:19:13,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 00:19:13,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-20 00:19:13,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 00:19:13,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 00:19:14,145 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 00:19:14,146 INFO L285 CfgBuilder]: Removed 156 assume(true) statements. [2019-11-20 00:19:14,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:19:14 BoogieIcfgContainer [2019-11-20 00:19:14,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 00:19:14,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 00:19:14,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 00:19:14,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 00:19:14,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:19:12" (1/3) ... [2019-11-20 00:19:14,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ff04ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:19:14, skipping insertion in model container [2019-11-20 00:19:14,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:19:13" (2/3) ... [2019-11-20 00:19:14,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ff04ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:19:14, skipping insertion in model container [2019-11-20 00:19:14,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:19:14" (3/3) ... [2019-11-20 00:19:14,157 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2019-11-20 00:19:14,167 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 00:19:14,176 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-20 00:19:14,185 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-20 00:19:14,205 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 00:19:14,206 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 00:19:14,206 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 00:19:14,206 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 00:19:14,206 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 00:19:14,206 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 00:19:14,206 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 00:19:14,206 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 00:19:14,223 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2019-11-20 00:19:14,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 00:19:14,229 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:19:14,230 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:19:14,231 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:19:14,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:14,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2109695399, now seen corresponding path program 1 times [2019-11-20 00:19:14,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:14,245 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500655920] [2019-11-20 00:19:14,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:19:14,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500655920] [2019-11-20 00:19:14,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:19:14,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 00:19:14,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682921113] [2019-11-20 00:19:14,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 00:19:14,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:19:14,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 00:19:14,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 00:19:14,470 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 2 states. [2019-11-20 00:19:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:19:14,496 INFO L93 Difference]: Finished difference Result 216 states and 329 transitions. [2019-11-20 00:19:14,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 00:19:14,497 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-11-20 00:19:14,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:19:14,508 INFO L225 Difference]: With dead ends: 216 [2019-11-20 00:19:14,508 INFO L226 Difference]: Without dead ends: 107 [2019-11-20 00:19:14,511 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 [2019-11-20 00:19:14,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-11-20 00:19:14,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2019-11-20 00:19:14,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-11-20 00:19:14,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2019-11-20 00:19:14,548 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 16 [2019-11-20 00:19:14,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:19:14,548 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2019-11-20 00:19:14,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 00:19:14,548 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2019-11-20 00:19:14,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 00:19:14,550 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:19:14,550 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:19:14,550 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:19:14,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:14,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1093063509, now seen corresponding path program 1 times [2019-11-20 00:19:14,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:14,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298184127] [2019-11-20 00:19:14,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:19:14,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298184127] [2019-11-20 00:19:14,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:19:14,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 00:19:14,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479590810] [2019-11-20 00:19:14,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 00:19:14,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:19:14,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 00:19:14,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:19:14,641 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand 3 states. [2019-11-20 00:19:14,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:19:14,662 INFO L93 Difference]: Finished difference Result 107 states and 156 transitions. [2019-11-20 00:19:14,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:19:14,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-20 00:19:14,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:19:14,666 INFO L225 Difference]: With dead ends: 107 [2019-11-20 00:19:14,667 INFO L226 Difference]: Without dead ends: 45 [2019-11-20 00:19:14,669 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 [2019-11-20 00:19:14,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-20 00:19:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-11-20 00:19:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-20 00:19:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2019-11-20 00:19:14,678 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 17 [2019-11-20 00:19:14,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:19:14,679 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2019-11-20 00:19:14,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 00:19:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2019-11-20 00:19:14,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 00:19:14,681 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:19:14,682 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] [2019-11-20 00:19:14,682 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:19:14,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:14,682 INFO L82 PathProgramCache]: Analyzing trace with hash -720159228, now seen corresponding path program 1 times [2019-11-20 00:19:14,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:14,683 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585469797] [2019-11-20 00:19:14,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:14,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:19:14,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585469797] [2019-11-20 00:19:14,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:19:14,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 00:19:14,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364660797] [2019-11-20 00:19:14,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 00:19:14,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:19:14,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 00:19:14,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:19:14,836 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand 3 states. [2019-11-20 00:19:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:19:14,848 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2019-11-20 00:19:14,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:19:14,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-11-20 00:19:14,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:19:14,853 INFO L225 Difference]: With dead ends: 84 [2019-11-20 00:19:14,855 INFO L226 Difference]: Without dead ends: 45 [2019-11-20 00:19:14,855 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 [2019-11-20 00:19:14,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-20 00:19:14,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-11-20 00:19:14,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-20 00:19:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2019-11-20 00:19:14,864 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 22 [2019-11-20 00:19:14,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:19:14,865 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2019-11-20 00:19:14,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 00:19:14,866 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2019-11-20 00:19:14,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 00:19:14,868 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:19:14,868 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] [2019-11-20 00:19:14,869 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:19:14,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:14,870 INFO L82 PathProgramCache]: Analyzing trace with hash 2091202829, now seen corresponding path program 1 times [2019-11-20 00:19:14,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:14,870 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975708542] [2019-11-20 00:19:14,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:19:14,952 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975708542] [2019-11-20 00:19:14,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:19:14,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 00:19:14,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311130875] [2019-11-20 00:19:14,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 00:19:14,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:19:14,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 00:19:14,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:19:14,953 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand 3 states. [2019-11-20 00:19:14,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:19:14,992 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2019-11-20 00:19:14,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:19:14,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-20 00:19:14,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:19:14,993 INFO L225 Difference]: With dead ends: 105 [2019-11-20 00:19:14,994 INFO L226 Difference]: Without dead ends: 66 [2019-11-20 00:19:14,994 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 [2019-11-20 00:19:14,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-20 00:19:15,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2019-11-20 00:19:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-20 00:19:15,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2019-11-20 00:19:15,001 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 24 [2019-11-20 00:19:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:19:15,002 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2019-11-20 00:19:15,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 00:19:15,002 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2019-11-20 00:19:15,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 00:19:15,003 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:19:15,004 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] [2019-11-20 00:19:15,004 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:19:15,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:15,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1013899842, now seen corresponding path program 1 times [2019-11-20 00:19:15,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:15,005 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895063260] [2019-11-20 00:19:15,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:19:15,074 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895063260] [2019-11-20 00:19:15,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:19:15,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 00:19:15,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569355877] [2019-11-20 00:19:15,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 00:19:15,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:19:15,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 00:19:15,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 00:19:15,076 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand 5 states. [2019-11-20 00:19:15,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:19:15,157 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2019-11-20 00:19:15,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 00:19:15,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-11-20 00:19:15,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:19:15,159 INFO L225 Difference]: With dead ends: 171 [2019-11-20 00:19:15,159 INFO L226 Difference]: Without dead ends: 113 [2019-11-20 00:19:15,160 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 [2019-11-20 00:19:15,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-11-20 00:19:15,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2019-11-20 00:19:15,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-20 00:19:15,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2019-11-20 00:19:15,169 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 30 [2019-11-20 00:19:15,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:19:15,170 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2019-11-20 00:19:15,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 00:19:15,170 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2019-11-20 00:19:15,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 00:19:15,171 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:19:15,172 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] [2019-11-20 00:19:15,172 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:19:15,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:15,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1648611201, now seen corresponding path program 1 times [2019-11-20 00:19:15,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:15,173 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983899469] [2019-11-20 00:19:15,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:19:15,284 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983899469] [2019-11-20 00:19:15,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:19:15,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 00:19:15,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078070224] [2019-11-20 00:19:15,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 00:19:15,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:19:15,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 00:19:15,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 00:19:15,286 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 5 states. [2019-11-20 00:19:15,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:19:15,387 INFO L93 Difference]: Finished difference Result 247 states and 346 transitions. [2019-11-20 00:19:15,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 00:19:15,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-11-20 00:19:15,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:19:15,390 INFO L225 Difference]: With dead ends: 247 [2019-11-20 00:19:15,390 INFO L226 Difference]: Without dead ends: 183 [2019-11-20 00:19:15,391 INFO L630 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 [2019-11-20 00:19:15,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-11-20 00:19:15,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 113. [2019-11-20 00:19:15,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-11-20 00:19:15,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 152 transitions. [2019-11-20 00:19:15,404 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 152 transitions. Word has length 30 [2019-11-20 00:19:15,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:19:15,404 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 152 transitions. [2019-11-20 00:19:15,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 00:19:15,405 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 152 transitions. [2019-11-20 00:19:15,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 00:19:15,406 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:19:15,406 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] [2019-11-20 00:19:15,407 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:19:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:15,407 INFO L82 PathProgramCache]: Analyzing trace with hash -359204993, now seen corresponding path program 1 times [2019-11-20 00:19:15,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:15,408 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606920586] [2019-11-20 00:19:15,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:19:15,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606920586] [2019-11-20 00:19:15,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:19:15,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 00:19:15,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950692259] [2019-11-20 00:19:15,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 00:19:15,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:19:15,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 00:19:15,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 00:19:15,475 INFO L87 Difference]: Start difference. First operand 113 states and 152 transitions. Second operand 5 states. [2019-11-20 00:19:15,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:19:15,613 INFO L93 Difference]: Finished difference Result 241 states and 330 transitions. [2019-11-20 00:19:15,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 00:19:15,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-20 00:19:15,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:19:15,615 INFO L225 Difference]: With dead ends: 241 [2019-11-20 00:19:15,615 INFO L226 Difference]: Without dead ends: 239 [2019-11-20 00:19:15,616 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 [2019-11-20 00:19:15,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2019-11-20 00:19:15,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 113. [2019-11-20 00:19:15,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-11-20 00:19:15,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 151 transitions. [2019-11-20 00:19:15,635 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 151 transitions. Word has length 31 [2019-11-20 00:19:15,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:19:15,636 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 151 transitions. [2019-11-20 00:19:15,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 00:19:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 151 transitions. [2019-11-20 00:19:15,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 00:19:15,642 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:19:15,642 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] [2019-11-20 00:19:15,642 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:19:15,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:15,643 INFO L82 PathProgramCache]: Analyzing trace with hash 880224250, now seen corresponding path program 1 times [2019-11-20 00:19:15,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:15,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386240142] [2019-11-20 00:19:15,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:15,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:19:15,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386240142] [2019-11-20 00:19:15,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:19:15,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 00:19:15,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774310688] [2019-11-20 00:19:15,707 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 00:19:15,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:19:15,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 00:19:15,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 00:19:15,708 INFO L87 Difference]: Start difference. First operand 113 states and 151 transitions. Second operand 5 states. [2019-11-20 00:19:15,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:19:15,783 INFO L93 Difference]: Finished difference Result 266 states and 356 transitions. [2019-11-20 00:19:15,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 00:19:15,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-20 00:19:15,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:19:15,785 INFO L225 Difference]: With dead ends: 266 [2019-11-20 00:19:15,785 INFO L226 Difference]: Without dead ends: 159 [2019-11-20 00:19:15,786 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 00:19:15,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-11-20 00:19:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 98. [2019-11-20 00:19:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-20 00:19:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2019-11-20 00:19:15,798 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 31 [2019-11-20 00:19:15,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:19:15,798 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2019-11-20 00:19:15,799 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 00:19:15,799 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2019-11-20 00:19:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-20 00:19:15,800 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:19:15,800 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] [2019-11-20 00:19:15,800 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:19:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:15,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1138389688, now seen corresponding path program 1 times [2019-11-20 00:19:15,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:15,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356235333] [2019-11-20 00:19:15,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:15,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:19:15,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356235333] [2019-11-20 00:19:15,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:19:15,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 00:19:15,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545397811] [2019-11-20 00:19:15,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 00:19:15,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:19:15,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 00:19:15,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 00:19:15,857 INFO L87 Difference]: Start difference. First operand 98 states and 128 transitions. Second operand 5 states. [2019-11-20 00:19:15,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:19:15,966 INFO L93 Difference]: Finished difference Result 265 states and 357 transitions. [2019-11-20 00:19:15,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 00:19:15,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-11-20 00:19:15,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:19:15,968 INFO L225 Difference]: With dead ends: 265 [2019-11-20 00:19:15,968 INFO L226 Difference]: Without dead ends: 197 [2019-11-20 00:19:15,969 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 00:19:15,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2019-11-20 00:19:15,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 139. [2019-11-20 00:19:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-11-20 00:19:15,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 180 transitions. [2019-11-20 00:19:15,988 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 180 transitions. Word has length 31 [2019-11-20 00:19:15,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:19:15,990 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 180 transitions. [2019-11-20 00:19:15,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 00:19:15,991 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 180 transitions. [2019-11-20 00:19:15,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-20 00:19:15,994 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:19:15,995 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-20 00:19:15,995 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:19:15,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:15,996 INFO L82 PathProgramCache]: Analyzing trace with hash 2022214963, now seen corresponding path program 1 times [2019-11-20 00:19:15,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:15,998 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65490982] [2019-11-20 00:19:15,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:19:16,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65490982] [2019-11-20 00:19:16,103 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102186825] [2019-11-20 00:19:16,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_107a67c4-ca52-4a52-8126-3bdbccb70c70/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:19:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:16,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 00:19:16,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:19:16,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:19:16,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-20 00:19:16,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911383638] [2019-11-20 00:19:16,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 00:19:16,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:19:16,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 00:19:16,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-20 00:19:16,326 INFO L87 Difference]: Start difference. First operand 139 states and 180 transitions. Second operand 6 states. [2019-11-20 00:19:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:19:16,494 INFO L93 Difference]: Finished difference Result 431 states and 573 transitions. [2019-11-20 00:19:16,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 00:19:16,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2019-11-20 00:19:16,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:19:16,497 INFO L225 Difference]: With dead ends: 431 [2019-11-20 00:19:16,497 INFO L226 Difference]: Without dead ends: 322 [2019-11-20 00:19:16,498 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-11-20 00:19:16,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2019-11-20 00:19:16,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 191. [2019-11-20 00:19:16,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2019-11-20 00:19:16,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 250 transitions. [2019-11-20 00:19:16,515 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 250 transitions. Word has length 50 [2019-11-20 00:19:16,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:19:16,515 INFO L462 AbstractCegarLoop]: Abstraction has 191 states and 250 transitions. [2019-11-20 00:19:16,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 00:19:16,516 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 250 transitions. [2019-11-20 00:19:16,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-20 00:19:16,516 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:19:16,517 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:19:16,721 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:19:16,721 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:19:16,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:16,722 INFO L82 PathProgramCache]: Analyzing trace with hash 866267864, now seen corresponding path program 2 times [2019-11-20 00:19:16,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:16,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594294049] [2019-11-20 00:19:16,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:16,920 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:16,921 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 00:19:17,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:19:17 BoogieIcfgContainer [2019-11-20 00:19:17,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 00:19:17,060 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 00:19:17,060 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 00:19:17,060 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 00:19:17,061 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:19:14" (3/4) ... [2019-11-20 00:19:17,064 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 00:19:17,232 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_107a67c4-ca52-4a52-8126-3bdbccb70c70/bin/uautomizer/witness.graphml [2019-11-20 00:19:17,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 00:19:17,234 INFO L168 Benchmark]: Toolchain (without parser) took 4619.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.8 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -126.6 MB). Peak memory consumption was 85.2 MB. Max. memory is 11.5 GB. [2019-11-20 00:19:17,235 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:19:17,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -163.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-20 00:19:17,236 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.55 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-20 00:19:17,236 INFO L168 Benchmark]: Boogie Preprocessor took 40.19 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. [2019-11-20 00:19:17,236 INFO L168 Benchmark]: RCFGBuilder took 777.17 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: 68.5 MB). Peak memory consumption was 68.5 MB. Max. memory is 11.5 GB. [2019-11-20 00:19:17,237 INFO L168 Benchmark]: TraceAbstraction took 2912.26 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.1 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -69.6 MB). Peak memory consumption was 8.5 MB. Max. memory is 11.5 GB. [2019-11-20 00:19:17,237 INFO L168 Benchmark]: Witness Printer took 172.52 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: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2019-11-20 00:19:17,239 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 633.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -163.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 79.55 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.19 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 777.17 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: 68.5 MB). Peak memory consumption was 68.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2912.26 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 78.1 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -69.6 MB). Peak memory consumption was 8.5 MB. Max. memory is 11.5 GB. * Witness Printer took 172.52 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: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 434]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L155] int pumpRunning = 0; [L156] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L440] int waterLevel = 1; [L441] int methaneLevelCritical = 0; [L703] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L407] int retValue_acc ; [L408] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L414] tmp = valid_product() [L416] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L83] int splverifierCounter ; [L84] int tmp ; [L85] int tmp___0 ; [L86] int tmp___1 ; [L87] int tmp___2 ; [L90] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L92] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L94] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L100] tmp = __VERIFIER_nondet_int() [L102] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L458] COND TRUE waterLevel < 2 [L459] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L163] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L170] COND TRUE \read(systemActive) [L218] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L221] COND FALSE !(\read(pumpRunning)) [L192] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L195] COND TRUE ! pumpRunning [L315] int retValue_acc ; [L316] int tmp ; [L317] int tmp___0 ; [L520] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L523] COND FALSE !(waterLevel < 2) [L527] retValue_acc = 0 [L528] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L321] tmp = isHighWaterSensorDry() [L323] COND FALSE !(\read(tmp)) [L326] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L328] retValue_acc = tmp___0 [L329] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L197] tmp = isHighWaterLevel() [L199] COND TRUE \read(tmp) [L246] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L901] int tmp ; [L902] int tmp___0 ; [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L92] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L94] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L163] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L170] COND TRUE \read(systemActive) [L218] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L221] COND TRUE \read(pumpRunning) [L259] int retValue_acc ; [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) [L192] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L195] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L901] int tmp ; [L902] int tmp___0 ; [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L92] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L94] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L163] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L170] COND TRUE \read(systemActive) [L218] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L221] COND TRUE \read(pumpRunning) [L259] int retValue_acc ; [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) [L192] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L195] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L901] int tmp ; [L902] int tmp___0 ; [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L906] tmp = getWaterLevel() [L908] COND TRUE tmp == 0 [L270] int retValue_acc ; [L273] retValue_acc = pumpRunning [L274] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L910] tmp___0 = isPumpRunning() [L912] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L434] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 111 locations, 3 error locations. Result: UNSAFE, OverallTime: 2.8s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 952 SDtfs, 1206 SDslu, 1382 SDs, 0 SdLazy, 233 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=10, 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, 10 MinimizatonAttempts, 491 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 401 NumberOfCodeBlocks, 401 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 321 ConstructedInterpolants, 0 QuantifiedInterpolants, 22445 SizeOfPredicates, 4 NumberOfNonLiveVariables, 394 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 22/28 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...