./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product44.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_bf629de3-c2d5-4820-ac3b-9f3968a4a1ce/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bf629de3-c2d5-4820-ac3b-9f3968a4a1ce/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bf629de3-c2d5-4820-ac3b-9f3968a4a1ce/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bf629de3-c2d5-4820-ac3b-9f3968a4a1ce/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_bf629de3-c2d5-4820-ac3b-9f3968a4a1ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bf629de3-c2d5-4820-ac3b-9f3968a4a1ce/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 35186e76d3512165346b803182d73298e94993df .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 08:56:35,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:35,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:35,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:35,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:35,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:35,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:35,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:35,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:35,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:35,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:35,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:35,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:35,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:35,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:35,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:35,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:35,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:35,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:35,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:35,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:35,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:35,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:35,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:35,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:35,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:35,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:35,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:35,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:35,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:35,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:35,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:35,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:35,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:35,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:35,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:35,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:35,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:35,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:35,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:35,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:35,677 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bf629de3-c2d5-4820-ac3b-9f3968a4a1ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:56:35,687 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:35,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:35,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:35,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:35,689 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:35,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:35,689 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:56:35,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:35,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:56:35,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:35,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:56:35,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:56:35,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:56:35,690 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:56:35,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:35,690 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:35,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:56:35,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:35,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:35,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:56:35,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:56:35,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:35,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:35,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:56:35,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:56:35,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:35,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:56:35,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:56:35,693 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_bf629de3-c2d5-4820-ac3b-9f3968a4a1ce/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 -> 35186e76d3512165346b803182d73298e94993df [2019-10-22 08:56:35,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:35,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:35,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:35,741 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:35,742 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:35,742 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bf629de3-c2d5-4820-ac3b-9f3968a4a1ce/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c [2019-10-22 08:56:35,795 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bf629de3-c2d5-4820-ac3b-9f3968a4a1ce/bin/uautomizer/data/c6d8392a6/b70928712ca64535b725eea505299bdf/FLAG2f0cfc617 [2019-10-22 08:56:36,203 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:36,204 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bf629de3-c2d5-4820-ac3b-9f3968a4a1ce/sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c [2019-10-22 08:56:36,215 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bf629de3-c2d5-4820-ac3b-9f3968a4a1ce/bin/uautomizer/data/c6d8392a6/b70928712ca64535b725eea505299bdf/FLAG2f0cfc617 [2019-10-22 08:56:36,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bf629de3-c2d5-4820-ac3b-9f3968a4a1ce/bin/uautomizer/data/c6d8392a6/b70928712ca64535b725eea505299bdf [2019-10-22 08:56:36,594 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:36,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:36,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:36,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:36,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:36,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:36" (1/1) ... [2019-10-22 08:56:36,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c7424e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:36, skipping insertion in model container [2019-10-22 08:56:36,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:36" (1/1) ... [2019-10-22 08:56:36,613 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:36,658 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:36,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:36,995 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:37,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:37,132 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:37,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:37 WrapperNode [2019-10-22 08:56:37,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:37,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:37,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:37,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:37,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:37" (1/1) ... [2019-10-22 08:56:37,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:37" (1/1) ... [2019-10-22 08:56:37,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:37,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:37,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:37,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:37,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:37" (1/1) ... [2019-10-22 08:56:37,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:37" (1/1) ... [2019-10-22 08:56:37,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:37" (1/1) ... [2019-10-22 08:56:37,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:37" (1/1) ... [2019-10-22 08:56:37,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:37" (1/1) ... [2019-10-22 08:56:37,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:37" (1/1) ... [2019-10-22 08:56:37,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:37" (1/1) ... [2019-10-22 08:56:37,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:37,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:37,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:37,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:37,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bf629de3-c2d5-4820-ac3b-9f3968a4a1ce/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 08:56:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:56:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 08:56:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:37,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:37,945 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:37,945 INFO L284 CfgBuilder]: Removed 126 assume(true) statements. [2019-10-22 08:56:37,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:37 BoogieIcfgContainer [2019-10-22 08:56:37,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:37,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:56:37,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:56:37,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:56:37,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:56:36" (1/3) ... [2019-10-22 08:56:37,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7679a645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:37, skipping insertion in model container [2019-10-22 08:56:37,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:37" (2/3) ... [2019-10-22 08:56:37,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7679a645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:37, skipping insertion in model container [2019-10-22 08:56:37,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:37" (3/3) ... [2019-10-22 08:56:37,955 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product44.cil.c [2019-10-22 08:56:37,966 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:56:37,979 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 08:56:37,989 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 08:56:38,014 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:56:38,015 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:56:38,015 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:56:38,015 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:38,015 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:38,016 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:56:38,016 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:38,016 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:56:38,034 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2019-10-22 08:56:38,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 08:56:38,041 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:38,042 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 08:56:38,044 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:38,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,052 INFO L82 PathProgramCache]: Analyzing trace with hash -415609573, now seen corresponding path program 1 times [2019-10-22 08:56:38,059 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:38,060 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364349311] [2019-10-22 08:56:38,060 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,061 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,274 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 08:56:38,275 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364349311] [2019-10-22 08:56:38,276 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:38,276 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:56:38,276 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177467797] [2019-10-22 08:56:38,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:56:38,280 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:38,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:56:38,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:56:38,293 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 2 states. [2019-10-22 08:56:38,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:38,318 INFO L93 Difference]: Finished difference Result 184 states and 275 transitions. [2019-10-22 08:56:38,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:56:38,319 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-22 08:56:38,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:38,334 INFO L225 Difference]: With dead ends: 184 [2019-10-22 08:56:38,334 INFO L226 Difference]: Without dead ends: 91 [2019-10-22 08:56:38,337 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 08:56:38,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-10-22 08:56:38,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2019-10-22 08:56:38,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-10-22 08:56:38,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2019-10-22 08:56:38,378 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 18 [2019-10-22 08:56:38,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:38,379 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2019-10-22 08:56:38,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:56:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2019-10-22 08:56:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:56:38,380 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:38,380 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 08:56:38,381 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:38,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1326640326, now seen corresponding path program 1 times [2019-10-22 08:56:38,381 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:38,381 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650286417] [2019-10-22 08:56:38,382 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,382 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,470 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 08:56:38,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650286417] [2019-10-22 08:56:38,470 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:38,470 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:38,471 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522783896] [2019-10-22 08:56:38,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:38,472 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:38,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:38,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:38,473 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand 3 states. [2019-10-22 08:56:38,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:38,483 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2019-10-22 08:56:38,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:38,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-22 08:56:38,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:38,485 INFO L225 Difference]: With dead ends: 91 [2019-10-22 08:56:38,485 INFO L226 Difference]: Without dead ends: 41 [2019-10-22 08:56:38,486 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 08:56:38,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-22 08:56:38,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-10-22 08:56:38,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-22 08:56:38,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2019-10-22 08:56:38,491 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 19 [2019-10-22 08:56:38,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:38,491 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2019-10-22 08:56:38,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:38,492 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2019-10-22 08:56:38,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 08:56:38,492 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:38,492 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 08:56:38,493 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:38,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1440289089, now seen corresponding path program 1 times [2019-10-22 08:56:38,493 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:38,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697868600] [2019-10-22 08:56:38,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,494 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,611 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 08:56:38,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697868600] [2019-10-22 08:56:38,612 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:38,612 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:56:38,612 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731379935] [2019-10-22 08:56:38,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:56:38,613 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:38,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:56:38,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:56:38,613 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand 5 states. [2019-10-22 08:56:38,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:38,693 INFO L93 Difference]: Finished difference Result 101 states and 147 transitions. [2019-10-22 08:56:38,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:38,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-22 08:56:38,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:38,695 INFO L225 Difference]: With dead ends: 101 [2019-10-22 08:56:38,695 INFO L226 Difference]: Without dead ends: 66 [2019-10-22 08:56:38,696 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 08:56:38,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-10-22 08:56:38,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2019-10-22 08:56:38,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-10-22 08:56:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 90 transitions. [2019-10-22 08:56:38,705 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 90 transitions. Word has length 24 [2019-10-22 08:56:38,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:38,705 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 90 transitions. [2019-10-22 08:56:38,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:56:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 90 transitions. [2019-10-22 08:56:38,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 08:56:38,706 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:38,706 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] [2019-10-22 08:56:38,706 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:38,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1072133948, now seen corresponding path program 1 times [2019-10-22 08:56:38,707 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:38,707 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967568633] [2019-10-22 08:56:38,707 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,707 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,756 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 08:56:38,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967568633] [2019-10-22 08:56:38,757 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:38,757 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:56:38,757 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132051066] [2019-10-22 08:56:38,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:38,758 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:38,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:38,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:38,758 INFO L87 Difference]: Start difference. First operand 62 states and 90 transitions. Second operand 3 states. [2019-10-22 08:56:38,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:38,785 INFO L93 Difference]: Finished difference Result 141 states and 207 transitions. [2019-10-22 08:56:38,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:38,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-22 08:56:38,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:38,786 INFO L225 Difference]: With dead ends: 141 [2019-10-22 08:56:38,787 INFO L226 Difference]: Without dead ends: 85 [2019-10-22 08:56:38,787 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 08:56:38,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-10-22 08:56:38,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2019-10-22 08:56:38,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-22 08:56:38,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 118 transitions. [2019-10-22 08:56:38,798 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 118 transitions. Word has length 25 [2019-10-22 08:56:38,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:38,798 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 118 transitions. [2019-10-22 08:56:38,798 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 118 transitions. [2019-10-22 08:56:38,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 08:56:38,799 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:38,799 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 08:56:38,800 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:38,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,800 INFO L82 PathProgramCache]: Analyzing trace with hash -2003629676, now seen corresponding path program 1 times [2019-10-22 08:56:38,800 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:38,800 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759547983] [2019-10-22 08:56:38,801 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,801 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,892 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 08:56:38,892 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759547983] [2019-10-22 08:56:38,893 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:38,893 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:56:38,893 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119624423] [2019-10-22 08:56:38,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:56:38,893 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:38,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:56:38,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:56:38,894 INFO L87 Difference]: Start difference. First operand 83 states and 118 transitions. Second operand 5 states. [2019-10-22 08:56:39,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:39,007 INFO L93 Difference]: Finished difference Result 448 states and 656 transitions. [2019-10-22 08:56:39,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:56:39,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-10-22 08:56:39,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:39,010 INFO L225 Difference]: With dead ends: 448 [2019-10-22 08:56:39,010 INFO L226 Difference]: Without dead ends: 371 [2019-10-22 08:56:39,011 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 08:56:39,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2019-10-22 08:56:39,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 150. [2019-10-22 08:56:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-10-22 08:56:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 209 transitions. [2019-10-22 08:56:39,043 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 209 transitions. Word has length 27 [2019-10-22 08:56:39,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:39,043 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 209 transitions. [2019-10-22 08:56:39,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:56:39,043 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 209 transitions. [2019-10-22 08:56:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-22 08:56:39,044 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:39,048 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 08:56:39,049 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:39,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:39,049 INFO L82 PathProgramCache]: Analyzing trace with hash 591073878, now seen corresponding path program 1 times [2019-10-22 08:56:39,049 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:39,050 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080358759] [2019-10-22 08:56:39,050 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:39,050 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:39,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:39,651 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:39,652 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:56:39,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:56:39 BoogieIcfgContainer [2019-10-22 08:56:39,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:56:39,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:39,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:39,743 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:39,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:37" (3/4) ... [2019-10-22 08:56:39,746 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:56:39,845 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bf629de3-c2d5-4820-ac3b-9f3968a4a1ce/bin/uautomizer/witness.graphml [2019-10-22 08:56:39,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:39,847 INFO L168 Benchmark]: Toolchain (without parser) took 3251.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 940.4 MB in the beginning and 1.0 GB in the end (delta: -97.1 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:39,848 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:39,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -155.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:39,851 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:39,851 INFO L168 Benchmark]: Boogie Preprocessor took 30.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:39,852 INFO L168 Benchmark]: RCFGBuilder took 733.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:39,852 INFO L168 Benchmark]: TraceAbstraction took 1795.09 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -29.5 MB). Peak memory consumption was 190.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:39,852 INFO L168 Benchmark]: Witness Printer took 102.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:39,853 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 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 536.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.0 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -155.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 733.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1795.09 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -29.5 MB). Peak memory consumption was 190.0 MB. Max. memory is 11.5 GB. * Witness Printer took 102.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 318]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L185] int waterLevel = 1; [L186] int methaneLevelCritical = 0; [L492] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L693] int pumpRunning = 0; [L694] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L305] int retValue_acc ; [L308] retValue_acc = 1 [L309] 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] [L887] int splverifierCounter ; [L888] int tmp ; [L889] int tmp___0 ; [L890] int tmp___1 ; [L891] int tmp___2 ; [L894] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L896] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L898] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L904] tmp = __VERIFIER_nondet_int() [L906] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L203] COND TRUE waterLevel < 2 [L204] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L914] tmp___0 = __VERIFIER_nondet_int() [L916] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L924] tmp___2 = __VERIFIER_nondet_int() [L926] COND FALSE !(\read(tmp___2)) [L932] tmp___1 = __VERIFIER_nondet_int() [L934] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L866] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L873] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L700] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L707] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L149] int tmp ; [L150] int tmp___0 ; [L151] int tmp___1 ; [L224] int retValue_acc ; [L227] retValue_acc = methaneLevelCritical [L228] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L155] tmp = isMethaneLevelCritical() [L157] COND FALSE !(\read(tmp)) [L256] int retValue_acc ; [L259] retValue_acc = waterLevel [L260] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L161] tmp___0 = getWaterLevel() [L163] COND TRUE tmp___0 == 2 [L799] int retValue_acc ; [L802] retValue_acc = pumpRunning [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L165] tmp___1 = isPumpRunning() [L167] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L318] __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, 95 locations, 3 error locations. Result: UNSAFE, OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 393 SDtfs, 570 SDslu, 301 SDs, 0 SdLazy, 58 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 227 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 4660 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...