./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/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 feddb53df5c889a09349b532f3a03633c4161684 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:41:17,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:41:17,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:41:17,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:41:17,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:41:17,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:41:17,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:41:17,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:41:17,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:41:17,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:41:17,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:41:17,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:41:17,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:41:17,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:41:17,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:41:17,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:41:17,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:41:17,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:41:17,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:41:17,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:41:17,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:41:17,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:41:17,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:41:17,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:41:17,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:41:17,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:41:17,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:41:17,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:41:17,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:41:17,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:41:17,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:41:17,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:41:17,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:41:17,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:41:17,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:41:17,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:41:17,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:41:17,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:41:17,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:41:17,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:41:17,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:41:17,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-16 00:41:17,432 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:41:17,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:41:17,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:41:17,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:41:17,433 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:41:17,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:41:17,434 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:41:17,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:41:17,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:41:17,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:41:17,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:41:17,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:41:17,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:41:17,435 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:41:17,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:41:17,436 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:41:17,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:41:17,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:41:17,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:41:17,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:41:17,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:41:17,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:41:17,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:41:17,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:41:17,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:41:17,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:41:17,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:41:17,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:41:17,439 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_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/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 -> feddb53df5c889a09349b532f3a03633c4161684 [2019-11-16 00:41:17,469 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:41:17,479 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:41:17,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:41:17,483 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:41:17,483 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:41:17,484 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c [2019-11-16 00:41:17,538 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/bin/uautomizer/data/a7be66441/41f35735901144c69e64dafbcabda83e/FLAGd4da14cd8 [2019-11-16 00:41:17,974 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:41:17,975 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c [2019-11-16 00:41:17,997 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/bin/uautomizer/data/a7be66441/41f35735901144c69e64dafbcabda83e/FLAGd4da14cd8 [2019-11-16 00:41:18,013 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/bin/uautomizer/data/a7be66441/41f35735901144c69e64dafbcabda83e [2019-11-16 00:41:18,016 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:41:18,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:41:18,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:41:18,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:41:18,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:41:18,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:41:18" (1/1) ... [2019-11-16 00:41:18,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c12a99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:18, skipping insertion in model container [2019-11-16 00:41:18,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:41:18" (1/1) ... [2019-11-16 00:41:18,034 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:41:18,095 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:41:18,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:41:18,478 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:41:18,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:41:18,582 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:41:18,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:18 WrapperNode [2019-11-16 00:41:18,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:41:18,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:41:18,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:41:18,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:41:18,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:18" (1/1) ... [2019-11-16 00:41:18,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:18" (1/1) ... [2019-11-16 00:41:18,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:41:18,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:41:18,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:41:18,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:41:18,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:18" (1/1) ... [2019-11-16 00:41:18,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:18" (1/1) ... [2019-11-16 00:41:18,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:18" (1/1) ... [2019-11-16 00:41:18,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:18" (1/1) ... [2019-11-16 00:41:18,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:18" (1/1) ... [2019-11-16 00:41:18,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:18" (1/1) ... [2019-11-16 00:41:18,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:18" (1/1) ... [2019-11-16 00:41:18,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:41:18,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:41:18,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:41:18,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:41:18,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/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 [2019-11-16 00:41:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-16 00:41:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-16 00:41:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:41:18,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:41:19,374 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:41:19,374 INFO L284 CfgBuilder]: Removed 98 assume(true) statements. [2019-11-16 00:41:19,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:41:19 BoogieIcfgContainer [2019-11-16 00:41:19,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:41:19,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:41:19,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:41:19,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:41:19,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:41:18" (1/3) ... [2019-11-16 00:41:19,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5f94c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:41:19, skipping insertion in model container [2019-11-16 00:41:19,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:41:18" (2/3) ... [2019-11-16 00:41:19,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a5f94c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:41:19, skipping insertion in model container [2019-11-16 00:41:19,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:41:19" (3/3) ... [2019-11-16 00:41:19,383 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product34.cil.c [2019-11-16 00:41:19,392 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:41:19,400 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-16 00:41:19,410 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-16 00:41:19,431 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:41:19,431 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:41:19,431 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:41:19,431 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:41:19,431 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:41:19,431 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:41:19,432 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:41:19,432 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:41:19,445 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2019-11-16 00:41:19,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-16 00:41:19,450 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:41:19,450 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:41:19,452 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:41:19,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:41:19,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1424204181, now seen corresponding path program 1 times [2019-11-16 00:41:19,461 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:41:19,461 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969980247] [2019-11-16 00:41:19,462 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:19,462 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:19,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:41:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:41:19,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:41:19,717 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969980247] [2019-11-16 00:41:19,717 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:41:19,717 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-16 00:41:19,718 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644021378] [2019-11-16 00:41:19,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-16 00:41:19,721 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:41:19,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-16 00:41:19,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-16 00:41:19,731 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2019-11-16 00:41:19,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:41:19,753 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2019-11-16 00:41:19,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-16 00:41:19,754 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-11-16 00:41:19,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:41:19,763 INFO L225 Difference]: With dead ends: 150 [2019-11-16 00:41:19,764 INFO L226 Difference]: Without dead ends: 74 [2019-11-16 00:41:19,767 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-16 00:41:19,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-11-16 00:41:19,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2019-11-16 00:41:19,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-11-16 00:41:19,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2019-11-16 00:41:19,803 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2019-11-16 00:41:19,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:41:19,804 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2019-11-16 00:41:19,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-16 00:41:19,804 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2019-11-16 00:41:19,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-16 00:41:19,805 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:41:19,805 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:41:19,806 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:41:19,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:41:19,806 INFO L82 PathProgramCache]: Analyzing trace with hash -631654862, now seen corresponding path program 1 times [2019-11-16 00:41:19,806 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:41:19,806 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220427902] [2019-11-16 00:41:19,807 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:19,807 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:19,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:41:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:41:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:41:19,902 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220427902] [2019-11-16 00:41:19,903 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:41:19,903 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-16 00:41:19,903 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412227428] [2019-11-16 00:41:19,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:41:19,904 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:41:19,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:41:19,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:41:19,905 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 3 states. [2019-11-16 00:41:19,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:41:19,915 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2019-11-16 00:41:19,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:41:19,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-16 00:41:19,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:41:19,916 INFO L225 Difference]: With dead ends: 74 [2019-11-16 00:41:19,916 INFO L226 Difference]: Without dead ends: 34 [2019-11-16 00:41:19,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:41:19,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-16 00:41:19,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-16 00:41:19,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-16 00:41:19,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2019-11-16 00:41:19,922 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2019-11-16 00:41:19,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:41:19,923 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2019-11-16 00:41:19,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:41:19,923 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2019-11-16 00:41:19,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-16 00:41:19,924 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:41:19,924 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] [2019-11-16 00:41:19,925 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:41:19,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:41:19,925 INFO L82 PathProgramCache]: Analyzing trace with hash -964945646, now seen corresponding path program 1 times [2019-11-16 00:41:19,925 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:41:19,925 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546748962] [2019-11-16 00:41:19,926 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:19,926 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:19,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:41:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:41:20,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:41:20,003 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546748962] [2019-11-16 00:41:20,003 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:41:20,003 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-16 00:41:20,004 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444775668] [2019-11-16 00:41:20,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:41:20,004 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:41:20,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:41:20,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:41:20,005 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 5 states. [2019-11-16 00:41:20,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:41:20,064 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2019-11-16 00:41:20,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:41:20,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-16 00:41:20,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:41:20,066 INFO L225 Difference]: With dead ends: 62 [2019-11-16 00:41:20,066 INFO L226 Difference]: Without dead ends: 34 [2019-11-16 00:41:20,067 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:41:20,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-16 00:41:20,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-16 00:41:20,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-16 00:41:20,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-11-16 00:41:20,072 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2019-11-16 00:41:20,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:41:20,073 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-16 00:41:20,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:41:20,073 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2019-11-16 00:41:20,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-16 00:41:20,074 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:41:20,074 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] [2019-11-16 00:41:20,074 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:41:20,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:41:20,075 INFO L82 PathProgramCache]: Analyzing trace with hash -952202930, now seen corresponding path program 1 times [2019-11-16 00:41:20,075 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:41:20,075 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868132429] [2019-11-16 00:41:20,075 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:20,076 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:20,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:41:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:41:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:41:20,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868132429] [2019-11-16 00:41:20,127 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:41:20,127 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-16 00:41:20,128 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561405312] [2019-11-16 00:41:20,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:41:20,128 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:41:20,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:41:20,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:41:20,129 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 3 states. [2019-11-16 00:41:20,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:41:20,154 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2019-11-16 00:41:20,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:41:20,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-16 00:41:20,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:41:20,156 INFO L225 Difference]: With dead ends: 83 [2019-11-16 00:41:20,156 INFO L226 Difference]: Without dead ends: 55 [2019-11-16 00:41:20,156 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:41:20,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-16 00:41:20,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2019-11-16 00:41:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-16 00:41:20,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2019-11-16 00:41:20,164 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2019-11-16 00:41:20,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:41:20,164 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2019-11-16 00:41:20,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:41:20,165 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2019-11-16 00:41:20,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-16 00:41:20,166 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:41:20,166 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, 1] [2019-11-16 00:41:20,166 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:41:20,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:41:20,167 INFO L82 PathProgramCache]: Analyzing trace with hash -2049720417, now seen corresponding path program 1 times [2019-11-16 00:41:20,167 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:41:20,167 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945210870] [2019-11-16 00:41:20,168 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:20,168 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:20,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:41:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:41:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:41:20,244 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945210870] [2019-11-16 00:41:20,244 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:41:20,245 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-16 00:41:20,245 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531265979] [2019-11-16 00:41:20,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:41:20,245 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:41:20,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:41:20,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:41:20,246 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand 5 states. [2019-11-16 00:41:20,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:41:20,315 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2019-11-16 00:41:20,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:41:20,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-11-16 00:41:20,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:41:20,318 INFO L225 Difference]: With dead ends: 139 [2019-11-16 00:41:20,318 INFO L226 Difference]: Without dead ends: 92 [2019-11-16 00:41:20,319 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:41:20,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-11-16 00:41:20,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2019-11-16 00:41:20,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-16 00:41:20,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2019-11-16 00:41:20,333 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2019-11-16 00:41:20,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:41:20,334 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2019-11-16 00:41:20,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:41:20,334 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2019-11-16 00:41:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-16 00:41:20,335 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:41:20,336 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, 1] [2019-11-16 00:41:20,336 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:41:20,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:41:20,336 INFO L82 PathProgramCache]: Analyzing trace with hash 612790626, now seen corresponding path program 1 times [2019-11-16 00:41:20,337 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:41:20,337 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338112168] [2019-11-16 00:41:20,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:20,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:20,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:41:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:41:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:41:20,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338112168] [2019-11-16 00:41:20,445 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:41:20,445 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-16 00:41:20,445 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38113849] [2019-11-16 00:41:20,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-16 00:41:20,446 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:41:20,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-16 00:41:20,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:41:20,446 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand 8 states. [2019-11-16 00:41:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:41:20,779 INFO L93 Difference]: Finished difference Result 347 states and 497 transitions. [2019-11-16 00:41:20,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-16 00:41:20,780 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2019-11-16 00:41:20,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:41:20,783 INFO L225 Difference]: With dead ends: 347 [2019-11-16 00:41:20,783 INFO L226 Difference]: Without dead ends: 297 [2019-11-16 00:41:20,784 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-11-16 00:41:20,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2019-11-16 00:41:20,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 140. [2019-11-16 00:41:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-11-16 00:41:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2019-11-16 00:41:20,806 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 29 [2019-11-16 00:41:20,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:41:20,806 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2019-11-16 00:41:20,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-16 00:41:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2019-11-16 00:41:20,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-16 00:41:20,809 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:41:20,809 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:41:20,809 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:41:20,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:41:20,810 INFO L82 PathProgramCache]: Analyzing trace with hash -230943976, now seen corresponding path program 1 times [2019-11-16 00:41:20,810 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:41:20,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28515326] [2019-11-16 00:41:20,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:20,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:20,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:41:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:41:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-16 00:41:20,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28515326] [2019-11-16 00:41:20,885 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:41:20,885 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-16 00:41:20,885 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025611821] [2019-11-16 00:41:20,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:41:20,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:41:20,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:41:20,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:41:20,887 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand 6 states. [2019-11-16 00:41:20,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:41:20,972 INFO L93 Difference]: Finished difference Result 325 states and 442 transitions. [2019-11-16 00:41:20,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:41:20,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2019-11-16 00:41:20,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:41:20,974 INFO L225 Difference]: With dead ends: 325 [2019-11-16 00:41:20,975 INFO L226 Difference]: Without dead ends: 191 [2019-11-16 00:41:20,975 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:41:20,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2019-11-16 00:41:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 120. [2019-11-16 00:41:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-11-16 00:41:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 160 transitions. [2019-11-16 00:41:20,999 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 160 transitions. Word has length 44 [2019-11-16 00:41:20,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:41:20,999 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 160 transitions. [2019-11-16 00:41:21,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:41:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 160 transitions. [2019-11-16 00:41:21,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-16 00:41:21,005 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:41:21,005 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:41:21,005 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:41:21,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:41:21,006 INFO L82 PathProgramCache]: Analyzing trace with hash -187398120, now seen corresponding path program 1 times [2019-11-16 00:41:21,006 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:41:21,006 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119340984] [2019-11-16 00:41:21,006 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:21,007 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:21,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:41:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:41:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:41:21,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119340984] [2019-11-16 00:41:21,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238622076] [2019-11-16 00:41:21,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:41:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:41:21,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-16 00:41:21,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:41:21,306 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:41:21,307 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:41:21,307 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-11-16 00:41:21,307 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517961899] [2019-11-16 00:41:21,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-16 00:41:21,308 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:41:21,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-16 00:41:21,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:41:21,308 INFO L87 Difference]: Start difference. First operand 120 states and 160 transitions. Second operand 8 states. [2019-11-16 00:41:21,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:41:21,512 INFO L93 Difference]: Finished difference Result 412 states and 570 transitions. [2019-11-16 00:41:21,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-16 00:41:21,512 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2019-11-16 00:41:21,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:41:21,514 INFO L225 Difference]: With dead ends: 412 [2019-11-16 00:41:21,514 INFO L226 Difference]: Without dead ends: 321 [2019-11-16 00:41:21,515 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-11-16 00:41:21,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2019-11-16 00:41:21,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 159. [2019-11-16 00:41:21,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-11-16 00:41:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 211 transitions. [2019-11-16 00:41:21,533 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 211 transitions. Word has length 45 [2019-11-16 00:41:21,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:41:21,534 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 211 transitions. [2019-11-16 00:41:21,534 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-16 00:41:21,534 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 211 transitions. [2019-11-16 00:41:21,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-16 00:41:21,536 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:41:21,536 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:41:21,741 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:41:21,741 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:41:21,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:41:21,741 INFO L82 PathProgramCache]: Analyzing trace with hash 774082429, now seen corresponding path program 2 times [2019-11-16 00:41:21,742 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:41:21,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769111204] [2019-11-16 00:41:21,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:21,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:41:21,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:41:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:41:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:41:22,592 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:41:22,593 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-16 00:41:22,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:41:22 BoogieIcfgContainer [2019-11-16 00:41:22,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:41:22,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:41:22,739 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:41:22,740 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:41:22,740 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:41:19" (3/4) ... [2019-11-16 00:41:22,743 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-16 00:41:22,875 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ecbebb7a-d7dd-4162-a557-9b619f4ddeb4/bin/uautomizer/witness.graphml [2019-11-16 00:41:22,875 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:41:22,877 INFO L168 Benchmark]: Toolchain (without parser) took 4859.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -181.5 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2019-11-16 00:41:22,877 INFO L168 Benchmark]: CDTParser took 0.18 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. [2019-11-16 00:41:22,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 563.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -185.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-11-16 00:41:22,878 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.20 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. [2019-11-16 00:41:22,879 INFO L168 Benchmark]: Boogie Preprocessor took 37.36 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. [2019-11-16 00:41:22,879 INFO L168 Benchmark]: RCFGBuilder took 694.46 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. [2019-11-16 00:41:22,879 INFO L168 Benchmark]: TraceAbstraction took 3362.53 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 49.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -87.7 MB). Peak memory consumption was 197.5 MB. Max. memory is 11.5 GB. [2019-11-16 00:41:22,882 INFO L168 Benchmark]: Witness Printer took 136.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-16 00:41:22,884 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 563.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -185.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.20 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 37.36 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 694.46 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 3362.53 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 49.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -87.7 MB). Peak memory consumption was 197.5 MB. Max. memory is 11.5 GB. * Witness Printer took 136.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 540]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L282] int pumpRunning = 0; [L283] int systemActive = 1; [L442] int waterLevel = 1; [L443] int methaneLevelCritical = 0; [L714] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L150] int retValue_acc ; [L151] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L199] int retValue_acc ; [L202] retValue_acc = 1 [L203] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L210] int splverifierCounter ; [L211] int tmp ; [L212] int tmp___0 ; [L213] int tmp___1 ; [L214] int tmp___2 ; [L217] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L219] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L221] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L227] tmp = __VERIFIER_nondet_int() [L229] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L460] COND TRUE waterLevel < 2 [L461] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND TRUE \read(tmp___2) [L437] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L289] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L296] COND TRUE \read(systemActive) [L318] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L321] COND TRUE ! pumpRunning [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; [L522] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L525] COND FALSE !(waterLevel < 2) [L529] retValue_acc = 0 [L530] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L323] tmp = isHighWaterLevel() [L325] COND TRUE \read(tmp) [L346] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L44] int tmp ; [L45] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L219] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L221] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L227] tmp = __VERIFIER_nondet_int() [L229] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND TRUE \read(tmp___2) [L437] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L289] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L296] COND TRUE \read(systemActive) [L318] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L321] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L44] int tmp ; [L45] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L219] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L221] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L227] tmp = __VERIFIER_nondet_int() [L229] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND TRUE \read(tmp___2) [L437] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L289] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L296] COND TRUE \read(systemActive) [L318] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L321] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L44] int tmp ; [L45] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L540] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 78 locations, 3 error locations. Result: UNSAFE, OverallTime: 3.3s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 552 SDtfs, 1019 SDslu, 1121 SDs, 0 SdLazy, 205 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=8, 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, 8 MinimizatonAttempts, 428 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 261 ConstructedInterpolants, 0 QuantifiedInterpolants, 16395 SizeOfPredicates, 4 NumberOfNonLiveVariables, 378 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 36/42 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...