./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product36.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_aba3d7df-11fd-4c43-83d5-ce1bf05190a3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_aba3d7df-11fd-4c43-83d5-ce1bf05190a3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aba3d7df-11fd-4c43-83d5-ce1bf05190a3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aba3d7df-11fd-4c43-83d5-ce1bf05190a3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product36.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_aba3d7df-11fd-4c43-83d5-ce1bf05190a3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aba3d7df-11fd-4c43-83d5-ce1bf05190a3/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 deeb3c1689cccb41b32be052288e2f3a90dc0e8e ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:13:05,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 00:13:05,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 00:13:05,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 00:13:05,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 00:13:05,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 00:13:05,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 00:13:05,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 00:13:05,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 00:13:05,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 00:13:05,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 00:13:05,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 00:13:05,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 00:13:05,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 00:13:05,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 00:13:05,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 00:13:05,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 00:13:05,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 00:13:05,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 00:13:05,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 00:13:05,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 00:13:05,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 00:13:05,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 00:13:05,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 00:13:05,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 00:13:05,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 00:13:05,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 00:13:05,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 00:13:05,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 00:13:05,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 00:13:05,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 00:13:05,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 00:13:05,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 00:13:05,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 00:13:05,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 00:13:05,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 00:13:05,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 00:13:05,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 00:13:05,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 00:13:05,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 00:13:05,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 00:13:05,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aba3d7df-11fd-4c43-83d5-ce1bf05190a3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 00:13:05,566 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 00:13:05,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 00:13:05,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 00:13:05,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 00:13:05,568 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 00:13:05,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 00:13:05,568 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 00:13:05,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 00:13:05,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 00:13:05,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 00:13:05,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 00:13:05,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 00:13:05,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 00:13:05,569 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 00:13:05,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 00:13:05,570 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 00:13:05,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 00:13:05,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 00:13:05,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 00:13:05,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 00:13:05,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 00:13:05,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:13:05,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 00:13:05,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 00:13:05,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 00:13:05,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 00:13:05,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 00:13:05,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 00:13:05,572 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_aba3d7df-11fd-4c43-83d5-ce1bf05190a3/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 -> deeb3c1689cccb41b32be052288e2f3a90dc0e8e [2019-11-20 00:13:05,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 00:13:05,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 00:13:05,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 00:13:05,725 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 00:13:05,726 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 00:13:05,727 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aba3d7df-11fd-4c43-83d5-ce1bf05190a3/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product36.cil.c [2019-11-20 00:13:05,788 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aba3d7df-11fd-4c43-83d5-ce1bf05190a3/bin/uautomizer/data/df1f5ecc0/17dc5a38582f49cc8912f3e5cfc3da9d/FLAGb9da50042 [2019-11-20 00:13:06,222 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 00:13:06,223 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aba3d7df-11fd-4c43-83d5-ce1bf05190a3/sv-benchmarks/c/product-lines/minepump_spec3_product36.cil.c [2019-11-20 00:13:06,234 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aba3d7df-11fd-4c43-83d5-ce1bf05190a3/bin/uautomizer/data/df1f5ecc0/17dc5a38582f49cc8912f3e5cfc3da9d/FLAGb9da50042 [2019-11-20 00:13:06,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aba3d7df-11fd-4c43-83d5-ce1bf05190a3/bin/uautomizer/data/df1f5ecc0/17dc5a38582f49cc8912f3e5cfc3da9d [2019-11-20 00:13:06,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 00:13:06,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 00:13:06,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 00:13:06,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 00:13:06,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 00:13:06,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:13:06" (1/1) ... [2019-11-20 00:13:06,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325112e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:06, skipping insertion in model container [2019-11-20 00:13:06,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:13:06" (1/1) ... [2019-11-20 00:13:06,583 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 00:13:06,619 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 00:13:06,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:13:06,966 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 00:13:07,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:13:07,091 INFO L192 MainTranslator]: Completed translation [2019-11-20 00:13:07,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:07 WrapperNode [2019-11-20 00:13:07,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 00:13:07,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 00:13:07,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 00:13:07,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 00:13:07,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:07" (1/1) ... [2019-11-20 00:13:07,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:07" (1/1) ... [2019-11-20 00:13:07,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 00:13:07,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 00:13:07,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 00:13:07,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 00:13:07,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:07" (1/1) ... [2019-11-20 00:13:07,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:07" (1/1) ... [2019-11-20 00:13:07,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:07" (1/1) ... [2019-11-20 00:13:07,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:07" (1/1) ... [2019-11-20 00:13:07,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:07" (1/1) ... [2019-11-20 00:13:07,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:07" (1/1) ... [2019-11-20 00:13:07,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:07" (1/1) ... [2019-11-20 00:13:07,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 00:13:07,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 00:13:07,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 00:13:07,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 00:13:07,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aba3d7df-11fd-4c43-83d5-ce1bf05190a3/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 00:13:07,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 00:13:07,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-20 00:13:07,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 00:13:07,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 00:13:07,971 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 00:13:07,972 INFO L285 CfgBuilder]: Removed 108 assume(true) statements. [2019-11-20 00:13:07,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:13:07 BoogieIcfgContainer [2019-11-20 00:13:07,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 00:13:07,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 00:13:07,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 00:13:07,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 00:13:07,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:13:06" (1/3) ... [2019-11-20 00:13:07,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784d5e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:13:07, skipping insertion in model container [2019-11-20 00:13:07,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:13:07" (2/3) ... [2019-11-20 00:13:07,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784d5e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:13:07, skipping insertion in model container [2019-11-20 00:13:07,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:13:07" (3/3) ... [2019-11-20 00:13:07,985 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product36.cil.c [2019-11-20 00:13:07,996 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 00:13:08,005 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-20 00:13:08,015 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-20 00:13:08,037 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 00:13:08,037 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 00:13:08,038 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 00:13:08,038 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 00:13:08,039 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 00:13:08,039 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 00:13:08,040 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 00:13:08,040 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 00:13:08,056 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-11-20 00:13:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 00:13:08,061 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:13:08,062 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:13:08,062 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:13:08,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:13:08,066 INFO L82 PathProgramCache]: Analyzing trace with hash -386332649, now seen corresponding path program 1 times [2019-11-20 00:13:08,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:13:08,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242456258] [2019-11-20 00:13:08,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:13:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:13:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:13:08,267 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242456258] [2019-11-20 00:13:08,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:13:08,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 00:13:08,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63861313] [2019-11-20 00:13:08,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 00:13:08,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:13:08,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 00:13:08,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 00:13:08,286 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 2 states. [2019-11-20 00:13:08,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:13:08,310 INFO L93 Difference]: Finished difference Result 166 states and 251 transitions. [2019-11-20 00:13:08,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 00:13:08,311 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-11-20 00:13:08,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:13:08,322 INFO L225 Difference]: With dead ends: 166 [2019-11-20 00:13:08,322 INFO L226 Difference]: Without dead ends: 82 [2019-11-20 00:13:08,326 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 00:13:08,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-20 00:13:08,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2019-11-20 00:13:08,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-20 00:13:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 117 transitions. [2019-11-20 00:13:08,363 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 117 transitions. Word has length 18 [2019-11-20 00:13:08,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:13:08,364 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 117 transitions. [2019-11-20 00:13:08,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 00:13:08,364 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 117 transitions. [2019-11-20 00:13:08,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 00:13:08,365 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:13:08,365 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:13:08,365 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:13:08,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:13:08,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1847726980, now seen corresponding path program 1 times [2019-11-20 00:13:08,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:13:08,366 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483847728] [2019-11-20 00:13:08,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:13:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:13:08,496 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 00:13:08,497 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483847728] [2019-11-20 00:13:08,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:13:08,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 00:13:08,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069881058] [2019-11-20 00:13:08,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 00:13:08,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:13:08,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 00:13:08,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:13:08,500 INFO L87 Difference]: Start difference. First operand 82 states and 117 transitions. Second operand 3 states. [2019-11-20 00:13:08,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:13:08,516 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2019-11-20 00:13:08,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:13:08,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-20 00:13:08,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:13:08,519 INFO L225 Difference]: With dead ends: 82 [2019-11-20 00:13:08,519 INFO L226 Difference]: Without dead ends: 38 [2019-11-20 00:13:08,521 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 00:13:08,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-20 00:13:08,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-20 00:13:08,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-20 00:13:08,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 54 transitions. [2019-11-20 00:13:08,533 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 54 transitions. Word has length 19 [2019-11-20 00:13:08,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:13:08,533 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 54 transitions. [2019-11-20 00:13:08,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 00:13:08,533 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2019-11-20 00:13:08,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 00:13:08,536 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:13:08,536 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 00:13:08,536 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:13:08,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:13:08,539 INFO L82 PathProgramCache]: Analyzing trace with hash 2067739700, now seen corresponding path program 1 times [2019-11-20 00:13:08,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:13:08,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662710539] [2019-11-20 00:13:08,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:13:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:13:08,692 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 00:13:08,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662710539] [2019-11-20 00:13:08,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:13:08,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 00:13:08,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261427806] [2019-11-20 00:13:08,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 00:13:08,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:13:08,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 00:13:08,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:13:08,694 INFO L87 Difference]: Start difference. First operand 38 states and 54 transitions. Second operand 3 states. [2019-11-20 00:13:08,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:13:08,754 INFO L93 Difference]: Finished difference Result 102 states and 150 transitions. [2019-11-20 00:13:08,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:13:08,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-11-20 00:13:08,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:13:08,758 INFO L225 Difference]: With dead ends: 102 [2019-11-20 00:13:08,758 INFO L226 Difference]: Without dead ends: 70 [2019-11-20 00:13:08,759 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 00:13:08,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-20 00:13:08,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2019-11-20 00:13:08,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-20 00:13:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2019-11-20 00:13:08,775 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 24 [2019-11-20 00:13:08,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:13:08,778 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2019-11-20 00:13:08,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 00:13:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2019-11-20 00:13:08,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-20 00:13:08,779 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:13:08,779 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] [2019-11-20 00:13:08,780 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:13:08,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:13:08,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1859072455, now seen corresponding path program 1 times [2019-11-20 00:13:08,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:13:08,780 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711724986] [2019-11-20 00:13:08,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:13:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:13:08,888 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 00:13:08,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711724986] [2019-11-20 00:13:08,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:13:08,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 00:13:08,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970866811] [2019-11-20 00:13:08,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 00:13:08,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:13:08,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 00:13:08,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:13:08,890 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand 3 states. [2019-11-20 00:13:08,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:13:08,958 INFO L93 Difference]: Finished difference Result 171 states and 256 transitions. [2019-11-20 00:13:08,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:13:08,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-20 00:13:08,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:13:08,960 INFO L225 Difference]: With dead ends: 171 [2019-11-20 00:13:08,960 INFO L226 Difference]: Without dead ends: 111 [2019-11-20 00:13:08,961 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 [2019-11-20 00:13:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-11-20 00:13:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2019-11-20 00:13:08,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-11-20 00:13:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2019-11-20 00:13:08,989 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 25 [2019-11-20 00:13:08,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:13:08,989 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2019-11-20 00:13:08,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 00:13:08,989 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2019-11-20 00:13:08,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 00:13:08,990 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:13:08,991 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] [2019-11-20 00:13:08,991 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:13:08,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:13:08,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1504399113, now seen corresponding path program 1 times [2019-11-20 00:13:08,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:13:08,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281386320] [2019-11-20 00:13:08,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:13:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:13:09,085 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 00:13:09,085 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281386320] [2019-11-20 00:13:09,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:13:09,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 00:13:09,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799096838] [2019-11-20 00:13:09,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 00:13:09,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:13:09,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 00:13:09,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 00:13:09,087 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 5 states. [2019-11-20 00:13:09,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:13:09,237 INFO L93 Difference]: Finished difference Result 597 states and 891 transitions. [2019-11-20 00:13:09,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 00:13:09,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-11-20 00:13:09,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:13:09,242 INFO L225 Difference]: With dead ends: 597 [2019-11-20 00:13:09,242 INFO L226 Difference]: Without dead ends: 494 [2019-11-20 00:13:09,244 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 00:13:09,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2019-11-20 00:13:09,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 198. [2019-11-20 00:13:09,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2019-11-20 00:13:09,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 280 transitions. [2019-11-20 00:13:09,284 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 280 transitions. Word has length 27 [2019-11-20 00:13:09,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:13:09,284 INFO L462 AbstractCegarLoop]: Abstraction has 198 states and 280 transitions. [2019-11-20 00:13:09,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 00:13:09,284 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 280 transitions. [2019-11-20 00:13:09,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 00:13:09,291 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:13:09,291 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] [2019-11-20 00:13:09,292 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:13:09,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:13:09,292 INFO L82 PathProgramCache]: Analyzing trace with hash -195864629, now seen corresponding path program 1 times [2019-11-20 00:13:09,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:13:09,293 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48454206] [2019-11-20 00:13:09,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:13:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:13:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:13:09,490 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:13:09,490 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 00:13:09,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:13:09 BoogieIcfgContainer [2019-11-20 00:13:09,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 00:13:09,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 00:13:09,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 00:13:09,632 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 00:13:09,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:13:07" (3/4) ... [2019-11-20 00:13:09,635 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 00:13:09,718 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_aba3d7df-11fd-4c43-83d5-ce1bf05190a3/bin/uautomizer/witness.graphml [2019-11-20 00:13:09,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 00:13:09,720 INFO L168 Benchmark]: Toolchain (without parser) took 3148.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 950.1 MB in the beginning and 926.8 MB in the end (delta: 23.3 MB). Peak memory consumption was 166.9 MB. Max. memory is 11.5 GB. [2019-11-20 00:13:09,720 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:13:09,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -176.4 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-11-20 00:13:09,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 00:13:09,722 INFO L168 Benchmark]: Boogie Preprocessor took 50.86 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 00:13:09,722 INFO L168 Benchmark]: RCFGBuilder took 752.39 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-11-20 00:13:09,722 INFO L168 Benchmark]: TraceAbstraction took 1657.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 937.5 MB in the end (delta: 123.5 MB). Peak memory consumption was 123.5 MB. Max. memory is 11.5 GB. [2019-11-20 00:13:09,723 INFO L168 Benchmark]: Witness Printer took 86.60 ms. Allocated memory is still 1.2 GB. Free memory was 937.5 MB in the beginning and 926.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 00:13:09,725 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 520.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -176.4 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 72.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.86 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 752.39 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1657.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 937.5 MB in the end (delta: 123.5 MB). Peak memory consumption was 123.5 MB. Max. memory is 11.5 GB. * Witness Printer took 86.60 ms. Allocated memory is still 1.2 GB. Free memory was 937.5 MB in the beginning and 926.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L426] int pumpRunning = 0; [L427] int systemActive = 1; [L675] int waterLevel = 1; [L676] int methaneLevelCritical = 0; [L769] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L845] int retValue_acc ; [L846] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L894] int retValue_acc ; [L897] retValue_acc = 1 [L898] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L852] tmp = valid_product() [L854] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L606] int splverifierCounter ; [L607] int tmp ; [L608] int tmp___0 ; [L609] int tmp___1 ; [L610] int tmp___2 ; [L613] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L615] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L617] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L623] tmp = __VERIFIER_nondet_int() [L625] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L693] COND TRUE waterLevel < 2 [L694] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L633] tmp___0 = __VERIFIER_nondet_int() [L635] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L643] tmp___2 = __VERIFIER_nondet_int() [L645] COND FALSE !(\read(tmp___2)) [L651] tmp___1 = __VERIFIER_nondet_int() [L653] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L582] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L589] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L434] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L441] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L904] int tmp ; [L905] int tmp___0 ; [L906] int tmp___1 ; [L714] int retValue_acc ; [L717] retValue_acc = methaneLevelCritical [L718] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L910] tmp = isMethaneLevelCritical() [L912] COND FALSE !(\read(tmp)) [L746] int retValue_acc ; [L749] retValue_acc = waterLevel [L750] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L916] tmp___0 = getWaterLevel() [L918] COND TRUE tmp___0 == 2 [L515] int retValue_acc ; [L518] retValue_acc = pumpRunning [L519] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L920] tmp___1 = isPumpRunning() [L922] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L44] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 86 locations, 3 error locations. Result: UNSAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 363 SDtfs, 349 SDslu, 289 SDs, 0 SdLazy, 56 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 302 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 4522 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...