./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ef2b42b7-c022-4433-85da-fde23c11eb6d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ef2b42b7-c022-4433-85da-fde23c11eb6d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ef2b42b7-c022-4433-85da-fde23c11eb6d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ef2b42b7-c022-4433-85da-fde23c11eb6d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ef2b42b7-c022-4433-85da-fde23c11eb6d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ef2b42b7-c022-4433-85da-fde23c11eb6d/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 525453629ce87b69ed1d4100e13fdb9e0c8a872a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:54:54,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:54,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:54,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:54,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:54,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:54,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:54,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:54,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:54,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:54,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:54,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:54,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:54,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:54,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:54,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:54,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:54,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:54,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:54,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:54,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:54,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:54,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:54,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:54,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:54,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:54,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:54,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:54,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:54,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:54,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:54,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:54,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:54,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:54,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:54,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:54,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:54,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:54,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:54,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:54,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:54,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ef2b42b7-c022-4433-85da-fde23c11eb6d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:54:54,534 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:54,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:54,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:54,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:54,536 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:54,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:54,536 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:54:54,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:54,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:54:54,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:54,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:54:54,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:54:54,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:54:54,538 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:54:54,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:54:54,538 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:54,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:54:54,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:54,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:54,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:54:54,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:54:54,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:54:54,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:54,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:54:54,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:54:54,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:54,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:54:54,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:54:54,541 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/working_dir_ef2b42b7-c022-4433-85da-fde23c11eb6d/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 -> 525453629ce87b69ed1d4100e13fdb9e0c8a872a [2019-10-22 08:54:54,571 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:54,586 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:54,590 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:54,591 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:54,592 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:54,592 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ef2b42b7-c022-4433-85da-fde23c11eb6d/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c [2019-10-22 08:54:54,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ef2b42b7-c022-4433-85da-fde23c11eb6d/bin/uautomizer/data/2ee486a4e/82e030e62f274f0f9082e3e7f573c51c/FLAG853380520 [2019-10-22 08:54:55,138 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:55,139 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ef2b42b7-c022-4433-85da-fde23c11eb6d/sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c [2019-10-22 08:54:55,162 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ef2b42b7-c022-4433-85da-fde23c11eb6d/bin/uautomizer/data/2ee486a4e/82e030e62f274f0f9082e3e7f573c51c/FLAG853380520 [2019-10-22 08:54:55,420 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ef2b42b7-c022-4433-85da-fde23c11eb6d/bin/uautomizer/data/2ee486a4e/82e030e62f274f0f9082e3e7f573c51c [2019-10-22 08:54:55,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:55,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:54:55,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:55,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:55,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:55,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:55" (1/1) ... [2019-10-22 08:54:55,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125cb503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:55, skipping insertion in model container [2019-10-22 08:54:55,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:55" (1/1) ... [2019-10-22 08:54:55,443 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:55,482 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:55,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:55,885 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:56,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:56,055 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:56,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56 WrapperNode [2019-10-22 08:54:56,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:56,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:56,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:54:56,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:54:56,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:56,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:56,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:56,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:56,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:56,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:56,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:56,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:56,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ef2b42b7-c022-4433-85da-fde23c11eb6d/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 [2019-10-22 08:54:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:54:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 08:54:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:56,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:57,301 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:57,301 INFO L284 CfgBuilder]: Removed 288 assume(true) statements. [2019-10-22 08:54:57,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:57 BoogieIcfgContainer [2019-10-22 08:54:57,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:57,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:54:57,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:54:57,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:54:57,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:54:55" (1/3) ... [2019-10-22 08:54:57,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66eb8a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:57, skipping insertion in model container [2019-10-22 08:54:57,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (2/3) ... [2019-10-22 08:54:57,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66eb8a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:57, skipping insertion in model container [2019-10-22 08:54:57,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:57" (3/3) ... [2019-10-22 08:54:57,312 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product56.cil.c [2019-10-22 08:54:57,325 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:54:57,334 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 08:54:57,351 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 08:54:57,380 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:54:57,380 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:54:57,380 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:54:57,380 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:57,380 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:57,381 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:54:57,381 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:57,381 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:54:57,400 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2019-10-22 08:54:57,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 08:54:57,408 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:57,409 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:57,411 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:57,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:57,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1618500051, now seen corresponding path program 1 times [2019-10-22 08:54:57,423 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:57,423 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837634176] [2019-10-22 08:54:57,423 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:57,424 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:57,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:57,669 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837634176] [2019-10-22 08:54:57,670 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:57,670 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:54:57,670 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878271041] [2019-10-22 08:54:57,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:54:57,675 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:57,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:54:57,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:54:57,692 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 2 states. [2019-10-22 08:54:57,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:57,737 INFO L93 Difference]: Finished difference Result 388 states and 593 transitions. [2019-10-22 08:54:57,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:54:57,740 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-22 08:54:57,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:57,756 INFO L225 Difference]: With dead ends: 388 [2019-10-22 08:54:57,757 INFO L226 Difference]: Without dead ends: 193 [2019-10-22 08:54:57,760 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:54:57,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-10-22 08:54:57,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2019-10-22 08:54:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2019-10-22 08:54:57,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 288 transitions. [2019-10-22 08:54:57,814 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 288 transitions. Word has length 18 [2019-10-22 08:54:57,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:57,815 INFO L462 AbstractCegarLoop]: Abstraction has 193 states and 288 transitions. [2019-10-22 08:54:57,815 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:54:57,815 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 288 transitions. [2019-10-22 08:54:57,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:54:57,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:57,816 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:57,817 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:57,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:57,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1765436492, now seen corresponding path program 1 times [2019-10-22 08:54:57,817 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:57,818 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387845283] [2019-10-22 08:54:57,818 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:57,818 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:57,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:57,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387845283] [2019-10-22 08:54:57,953 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:57,953 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:57,954 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023674187] [2019-10-22 08:54:57,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:54:57,960 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:57,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:54:57,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:54:57,960 INFO L87 Difference]: Start difference. First operand 193 states and 288 transitions. Second operand 3 states. [2019-10-22 08:54:57,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:57,990 INFO L93 Difference]: Finished difference Result 193 states and 288 transitions. [2019-10-22 08:54:57,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:54:57,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-22 08:54:57,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:57,992 INFO L225 Difference]: With dead ends: 193 [2019-10-22 08:54:57,992 INFO L226 Difference]: Without dead ends: 75 [2019-10-22 08:54:57,993 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:54:57,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-10-22 08:54:57,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2019-10-22 08:54:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-10-22 08:54:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 111 transitions. [2019-10-22 08:54:58,000 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 111 transitions. Word has length 19 [2019-10-22 08:54:58,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:58,001 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 111 transitions. [2019-10-22 08:54:58,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:54:58,001 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 111 transitions. [2019-10-22 08:54:58,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 08:54:58,002 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:58,002 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:58,002 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:58,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:58,003 INFO L82 PathProgramCache]: Analyzing trace with hash 134472408, now seen corresponding path program 1 times [2019-10-22 08:54:58,003 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:58,003 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366307364] [2019-10-22 08:54:58,003 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,004 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:58,141 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366307364] [2019-10-22 08:54:58,142 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:58,142 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:54:58,142 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696526212] [2019-10-22 08:54:58,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:54:58,143 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:58,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:54:58,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:54:58,146 INFO L87 Difference]: Start difference. First operand 75 states and 111 transitions. Second operand 5 states. [2019-10-22 08:54:58,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:58,225 INFO L93 Difference]: Finished difference Result 169 states and 253 transitions. [2019-10-22 08:54:58,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:54:58,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-22 08:54:58,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:58,227 INFO L225 Difference]: With dead ends: 169 [2019-10-22 08:54:58,227 INFO L226 Difference]: Without dead ends: 100 [2019-10-22 08:54:58,228 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:54:58,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-10-22 08:54:58,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2019-10-22 08:54:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-10-22 08:54:58,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 143 transitions. [2019-10-22 08:54:58,241 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 143 transitions. Word has length 24 [2019-10-22 08:54:58,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:58,242 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 143 transitions. [2019-10-22 08:54:58,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:54:58,242 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 143 transitions. [2019-10-22 08:54:58,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 08:54:58,244 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:58,244 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:58,244 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:58,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:58,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1119046690, now seen corresponding path program 1 times [2019-10-22 08:54:58,245 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:58,245 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665350313] [2019-10-22 08:54:58,245 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,246 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:58,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:58,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665350313] [2019-10-22 08:54:58,372 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:58,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:54:58,372 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258662896] [2019-10-22 08:54:58,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:54:58,373 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:58,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:54:58,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:54:58,374 INFO L87 Difference]: Start difference. First operand 96 states and 143 transitions. Second operand 3 states. [2019-10-22 08:54:58,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:58,456 INFO L93 Difference]: Finished difference Result 197 states and 295 transitions. [2019-10-22 08:54:58,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:54:58,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-10-22 08:54:58,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:58,458 INFO L225 Difference]: With dead ends: 197 [2019-10-22 08:54:58,458 INFO L226 Difference]: Without dead ends: 107 [2019-10-22 08:54:58,458 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:54:58,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-10-22 08:54:58,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2019-10-22 08:54:58,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-10-22 08:54:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 150 transitions. [2019-10-22 08:54:58,480 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 150 transitions. Word has length 27 [2019-10-22 08:54:58,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:58,480 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 150 transitions. [2019-10-22 08:54:58,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:54:58,480 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 150 transitions. [2019-10-22 08:54:58,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 08:54:58,481 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:58,481 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:58,482 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:58,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:58,482 INFO L82 PathProgramCache]: Analyzing trace with hash -428868179, now seen corresponding path program 1 times [2019-10-22 08:54:58,482 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:58,483 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466747164] [2019-10-22 08:54:58,484 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,484 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:58,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466747164] [2019-10-22 08:54:58,586 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:58,586 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:54:58,587 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219326121] [2019-10-22 08:54:58,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:54:58,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:58,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:54:58,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:54:58,588 INFO L87 Difference]: Start difference. First operand 105 states and 150 transitions. Second operand 5 states. [2019-10-22 08:54:58,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:58,774 INFO L93 Difference]: Finished difference Result 533 states and 778 transitions. [2019-10-22 08:54:58,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:54:58,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-10-22 08:54:58,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:58,778 INFO L225 Difference]: With dead ends: 533 [2019-10-22 08:54:58,778 INFO L226 Difference]: Without dead ends: 434 [2019-10-22 08:54:58,779 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:54:58,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2019-10-22 08:54:58,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 171. [2019-10-22 08:54:58,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2019-10-22 08:54:58,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 239 transitions. [2019-10-22 08:54:58,828 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 239 transitions. Word has length 27 [2019-10-22 08:54:58,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:58,829 INFO L462 AbstractCegarLoop]: Abstraction has 171 states and 239 transitions. [2019-10-22 08:54:58,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:54:58,829 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 239 transitions. [2019-10-22 08:54:58,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-22 08:54:58,830 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:58,831 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:58,833 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:58,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:58,834 INFO L82 PathProgramCache]: Analyzing trace with hash -2129131921, now seen corresponding path program 1 times [2019-10-22 08:54:58,834 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:58,834 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605929554] [2019-10-22 08:54:58,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,835 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:59,634 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:59,634 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:54:59,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:54:59 BoogieIcfgContainer [2019-10-22 08:54:59,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:54:59,761 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:54:59,761 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:54:59,761 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:54:59,762 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:57" (3/4) ... [2019-10-22 08:54:59,765 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:54:59,877 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ef2b42b7-c022-4433-85da-fde23c11eb6d/bin/uautomizer/witness.graphml [2019-10-22 08:54:59,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:54:59,880 INFO L168 Benchmark]: Toolchain (without parser) took 4454.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 944.7 MB in the beginning and 999.0 MB in the end (delta: -54.3 MB). Peak memory consumption was 90.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:59,880 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:59,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 630.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -180.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:59,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.35 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. [2019-10-22 08:54:59,882 INFO L168 Benchmark]: Boogie Preprocessor took 61.63 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: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:59,882 INFO L168 Benchmark]: RCFGBuilder took 1087.53 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: 89.9 MB). Peak memory consumption was 89.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:59,882 INFO L168 Benchmark]: TraceAbstraction took 2456.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:59,883 INFO L168 Benchmark]: Witness Printer took 116.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 999.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:59,886 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 630.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -180.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 96.35 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 61.63 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: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1087.53 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: 89.9 MB). Peak memory consumption was 89.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2456.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 11.5 GB. * Witness Printer took 116.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 999.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1013]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L587] int waterLevel = 1; [L588] int methaneLevelCritical = 0; [L694] int pumpRunning = 0; [L695] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L941] int splverifierCounter ; [L942] int tmp ; [L943] int tmp___0 ; [L944] int tmp___1 ; [L945] int tmp___2 ; [L948] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L950] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L952] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L958] tmp = __VERIFIER_nondet_int() [L960] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L605] COND TRUE waterLevel < 2 [L606] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L968] tmp___0 = __VERIFIER_nondet_int() [L970] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L978] tmp___2 = __VERIFIER_nondet_int() [L980] COND FALSE !(\read(tmp___2)) [L986] tmp___1 = __VERIFIER_nondet_int() [L988] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L920] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L927] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L701] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L708] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L550] int tmp ; [L551] int tmp___0 ; [L552] int tmp___1 ; [L626] int retValue_acc ; [L629] retValue_acc = methaneLevelCritical [L630] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L556] tmp = isMethaneLevelCritical() [L558] COND FALSE !(\read(tmp)) [L658] int retValue_acc ; [L661] retValue_acc = waterLevel [L662] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L562] tmp___0 = getWaterLevel() [L564] COND TRUE tmp___0 == 2 [L834] int retValue_acc ; [L837] retValue_acc = pumpRunning [L838] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L566] tmp___1 = isPumpRunning() [L568] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L1013] __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, 197 locations, 3 error locations. Result: UNSAFE, OverallTime: 2.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 751 SDtfs, 885 SDslu, 457 SDs, 0 SdLazy, 75 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 269 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 4928 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...