./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_955e7930-1a24-488d-b5d5-b728c289e21b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_955e7930-1a24-488d-b5d5-b728c289e21b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_955e7930-1a24-488d-b5d5-b728c289e21b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_955e7930-1a24-488d-b5d5-b728c289e21b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_955e7930-1a24-488d-b5d5-b728c289e21b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_955e7930-1a24-488d-b5d5-b728c289e21b/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 bc4bd2595a0b7e3cefae13519551d835632d9ce9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-f470102 [2019-12-07 15:12:01,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:12:01,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:12:01,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:12:01,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:12:01,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:12:01,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:12:01,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:12:01,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:12:01,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:12:01,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:12:01,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:12:01,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:12:01,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:12:01,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:12:01,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:12:01,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:12:01,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:12:01,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:12:01,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:12:01,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:12:01,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:12:01,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:12:01,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:12:01,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:12:01,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:12:01,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:12:01,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:12:01,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:12:01,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:12:01,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:12:01,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:12:01,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:12:01,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:12:01,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:12:01,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:12:01,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:12:01,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:12:01,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:12:01,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:12:01,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:12:01,673 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_955e7930-1a24-488d-b5d5-b728c289e21b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 15:12:01,682 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:12:01,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:12:01,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:12:01,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:12:01,683 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:12:01,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:12:01,683 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:12:01,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:12:01,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:12:01,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:12:01,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:12:01,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:12:01,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:12:01,684 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:12:01,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:12:01,685 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:12:01,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:12:01,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:12:01,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:12:01,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:12:01,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:12:01,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:12:01,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:12:01,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:12:01,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:12:01,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:12:01,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:12:01,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:12:01,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:12:01,686 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_955e7930-1a24-488d-b5d5-b728c289e21b/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 -> bc4bd2595a0b7e3cefae13519551d835632d9ce9 [2019-12-07 15:12:01,784 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:12:01,792 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:12:01,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:12:01,795 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:12:01,795 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:12:01,796 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_955e7930-1a24-488d-b5d5-b728c289e21b/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c [2019-12-07 15:12:01,832 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_955e7930-1a24-488d-b5d5-b728c289e21b/bin/uautomizer/data/b3ff087d6/1e4ee0d8c3e54ba2b037596eec1e3454/FLAG20e4ef4cd [2019-12-07 15:12:02,191 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:12:02,191 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_955e7930-1a24-488d-b5d5-b728c289e21b/sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c [2019-12-07 15:12:02,200 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_955e7930-1a24-488d-b5d5-b728c289e21b/bin/uautomizer/data/b3ff087d6/1e4ee0d8c3e54ba2b037596eec1e3454/FLAG20e4ef4cd [2019-12-07 15:12:02,209 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_955e7930-1a24-488d-b5d5-b728c289e21b/bin/uautomizer/data/b3ff087d6/1e4ee0d8c3e54ba2b037596eec1e3454 [2019-12-07 15:12:02,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:12:02,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:12:02,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:12:02,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:12:02,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:12:02,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:12:02" (1/1) ... [2019-12-07 15:12:02,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b211215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:12:02, skipping insertion in model container [2019-12-07 15:12:02,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:12:02" (1/1) ... [2019-12-07 15:12:02,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:12:02,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:12:02,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:12:02,489 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:12:02,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:12:02,561 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:12:02,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:12:02 WrapperNode [2019-12-07 15:12:02,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:12:02,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:12:02,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:12:02,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:12:02,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:12:02" (1/1) ... [2019-12-07 15:12:02,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:12:02" (1/1) ... [2019-12-07 15:12:02,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:12:02,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:12:02,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:12:02,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:12:02,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:12:02" (1/1) ... [2019-12-07 15:12:02,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:12:02" (1/1) ... [2019-12-07 15:12:02,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:12:02" (1/1) ... [2019-12-07 15:12:02,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:12:02" (1/1) ... [2019-12-07 15:12:02,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:12:02" (1/1) ... [2019-12-07 15:12:02,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:12:02" (1/1) ... [2019-12-07 15:12:02,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:12:02" (1/1) ... [2019-12-07 15:12:02,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:12:02,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:12:02,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:12:02,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:12:02,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:12:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_955e7930-1a24-488d-b5d5-b728c289e21b/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 [2019-12-07 15:12:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:12:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-07 15:12:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:12:02,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:12:03,324 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:12:03,324 INFO L287 CfgBuilder]: Removed 358 assume(true) statements. [2019-12-07 15:12:03,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:12:03 BoogieIcfgContainer [2019-12-07 15:12:03,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:12:03,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:12:03,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:12:03,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:12:03,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:12:02" (1/3) ... [2019-12-07 15:12:03,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dcd8c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:12:03, skipping insertion in model container [2019-12-07 15:12:03,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:12:02" (2/3) ... [2019-12-07 15:12:03,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dcd8c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:12:03, skipping insertion in model container [2019-12-07 15:12:03,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:12:03" (3/3) ... [2019-12-07 15:12:03,330 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product63.cil.c [2019-12-07 15:12:03,337 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:12:03,342 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 15:12:03,349 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 15:12:03,368 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:12:03,368 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:12:03,368 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:12:03,368 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:12:03,368 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:12:03,368 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:12:03,368 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:12:03,369 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:12:03,385 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states. [2019-12-07 15:12:03,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 15:12:03,390 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:12:03,391 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:12:03,391 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:12:03,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:12:03,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1810150439, now seen corresponding path program 1 times [2019-12-07 15:12:03,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:12:03,401 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670166818] [2019-12-07 15:12:03,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:12:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:12:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:12:03,577 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670166818] [2019-12-07 15:12:03,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:12:03,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:12:03,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888049082] [2019-12-07 15:12:03,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:12:03,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:12:03,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:12:03,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:12:03,591 INFO L87 Difference]: Start difference. First operand 233 states. Second operand 2 states. [2019-12-07 15:12:03,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:12:03,621 INFO L93 Difference]: Finished difference Result 460 states and 689 transitions. [2019-12-07 15:12:03,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:12:03,622 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-12-07 15:12:03,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:12:03,631 INFO L225 Difference]: With dead ends: 460 [2019-12-07 15:12:03,631 INFO L226 Difference]: Without dead ends: 229 [2019-12-07 15:12:03,634 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:12:03,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2019-12-07 15:12:03,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2019-12-07 15:12:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2019-12-07 15:12:03,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 336 transitions. [2019-12-07 15:12:03,670 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 336 transitions. Word has length 18 [2019-12-07 15:12:03,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:12:03,671 INFO L462 AbstractCegarLoop]: Abstraction has 229 states and 336 transitions. [2019-12-07 15:12:03,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:12:03,671 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 336 transitions. [2019-12-07 15:12:03,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 15:12:03,672 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:12:03,672 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:12:03,672 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:12:03,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:12:03,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1201076285, now seen corresponding path program 1 times [2019-12-07 15:12:03,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:12:03,673 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264704052] [2019-12-07 15:12:03,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:12:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:12:03,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:12:03,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264704052] [2019-12-07 15:12:03,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:12:03,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:12:03,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794236226] [2019-12-07 15:12:03,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:12:03,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:12:03,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:12:03,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:12:03,732 INFO L87 Difference]: Start difference. First operand 229 states and 336 transitions. Second operand 3 states. [2019-12-07 15:12:03,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:12:03,743 INFO L93 Difference]: Finished difference Result 229 states and 336 transitions. [2019-12-07 15:12:03,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:12:03,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-07 15:12:03,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:12:03,744 INFO L225 Difference]: With dead ends: 229 [2019-12-07 15:12:03,744 INFO L226 Difference]: Without dead ends: 87 [2019-12-07 15:12:03,745 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:12:03,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-12-07 15:12:03,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2019-12-07 15:12:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-12-07 15:12:03,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 127 transitions. [2019-12-07 15:12:03,751 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 127 transitions. Word has length 19 [2019-12-07 15:12:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:12:03,751 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 127 transitions. [2019-12-07 15:12:03,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:12:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 127 transitions. [2019-12-07 15:12:03,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 15:12:03,752 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:12:03,752 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:12:03,752 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:12:03,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:12:03,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1668670364, now seen corresponding path program 1 times [2019-12-07 15:12:03,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:12:03,752 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577226080] [2019-12-07 15:12:03,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:12:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:12:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:12:03,806 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577226080] [2019-12-07 15:12:03,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:12:03,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 15:12:03,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817512744] [2019-12-07 15:12:03,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:12:03,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:12:03,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:12:03,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:12:03,807 INFO L87 Difference]: Start difference. First operand 87 states and 127 transitions. Second operand 6 states. [2019-12-07 15:12:03,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:12:03,898 INFO L93 Difference]: Finished difference Result 274 states and 406 transitions. [2019-12-07 15:12:03,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:12:03,899 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-12-07 15:12:03,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:12:03,900 INFO L225 Difference]: With dead ends: 274 [2019-12-07 15:12:03,901 INFO L226 Difference]: Without dead ends: 193 [2019-12-07 15:12:03,901 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:12:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-12-07 15:12:03,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 108. [2019-12-07 15:12:03,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-12-07 15:12:03,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 159 transitions. [2019-12-07 15:12:03,913 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 159 transitions. Word has length 24 [2019-12-07 15:12:03,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:12:03,913 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 159 transitions. [2019-12-07 15:12:03,913 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:12:03,913 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 159 transitions. [2019-12-07 15:12:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 15:12:03,914 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:12:03,914 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:12:03,915 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:12:03,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:12:03,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1791027038, now seen corresponding path program 1 times [2019-12-07 15:12:03,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:12:03,915 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102714642] [2019-12-07 15:12:03,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:12:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:12:03,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:12:03,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102714642] [2019-12-07 15:12:03,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:12:03,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:12:03,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564716601] [2019-12-07 15:12:03,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:12:03,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:12:03,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:12:03,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:12:03,951 INFO L87 Difference]: Start difference. First operand 108 states and 159 transitions. Second operand 3 states. [2019-12-07 15:12:03,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:12:03,984 INFO L93 Difference]: Finished difference Result 218 states and 323 transitions. [2019-12-07 15:12:03,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:12:03,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-12-07 15:12:03,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:12:03,986 INFO L225 Difference]: With dead ends: 218 [2019-12-07 15:12:03,986 INFO L226 Difference]: Without dead ends: 116 [2019-12-07 15:12:03,987 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:12:03,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-12-07 15:12:03,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2019-12-07 15:12:03,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-12-07 15:12:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 162 transitions. [2019-12-07 15:12:04,000 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 162 transitions. Word has length 27 [2019-12-07 15:12:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:12:04,000 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 162 transitions. [2019-12-07 15:12:04,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:12:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 162 transitions. [2019-12-07 15:12:04,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 15:12:04,002 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:12:04,002 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:12:04,002 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:12:04,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:12:04,002 INFO L82 PathProgramCache]: Analyzing trace with hash 234819321, now seen corresponding path program 1 times [2019-12-07 15:12:04,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:12:04,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86945490] [2019-12-07 15:12:04,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:12:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:12:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:12:04,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86945490] [2019-12-07 15:12:04,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:12:04,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:12:04,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285447082] [2019-12-07 15:12:04,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:12:04,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:12:04,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:12:04,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:12:04,049 INFO L87 Difference]: Start difference. First operand 114 states and 162 transitions. Second operand 5 states. [2019-12-07 15:12:04,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:12:04,152 INFO L93 Difference]: Finished difference Result 578 states and 838 transitions. [2019-12-07 15:12:04,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 15:12:04,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-12-07 15:12:04,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:12:04,156 INFO L225 Difference]: With dead ends: 578 [2019-12-07 15:12:04,156 INFO L226 Difference]: Without dead ends: 470 [2019-12-07 15:12:04,157 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:12:04,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-12-07 15:12:04,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 183. [2019-12-07 15:12:04,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2019-12-07 15:12:04,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 255 transitions. [2019-12-07 15:12:04,178 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 255 transitions. Word has length 27 [2019-12-07 15:12:04,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:12:04,179 INFO L462 AbstractCegarLoop]: Abstraction has 183 states and 255 transitions. [2019-12-07 15:12:04,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:12:04,179 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 255 transitions. [2019-12-07 15:12:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 15:12:04,181 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:12:04,181 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:12:04,181 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:12:04,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:12:04,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1465444421, now seen corresponding path program 1 times [2019-12-07 15:12:04,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:12:04,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801018012] [2019-12-07 15:12:04,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:12:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:12:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:12:04,290 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:12:04,290 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:12:04,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:12:04 BoogieIcfgContainer [2019-12-07 15:12:04,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:12:04,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:12:04,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:12:04,370 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:12:04,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:12:03" (3/4) ... [2019-12-07 15:12:04,373 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 15:12:04,440 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_955e7930-1a24-488d-b5d5-b728c289e21b/bin/uautomizer/witness.graphml [2019-12-07 15:12:04,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:12:04,442 INFO L168 Benchmark]: Toolchain (without parser) took 2229.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -152.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:12:04,442 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:12:04,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:12:04,443 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.12 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. [2019-12-07 15:12:04,443 INFO L168 Benchmark]: Boogie Preprocessor took 45.42 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. [2019-12-07 15:12:04,444 INFO L168 Benchmark]: RCFGBuilder took 662.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 94.4 MB). Peak memory consumption was 94.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:12:04,444 INFO L168 Benchmark]: TraceAbstraction took 1044.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -104.7 MB). Peak memory consumption was 156.8 MB. Max. memory is 11.5 GB. [2019-12-07 15:12:04,444 INFO L168 Benchmark]: Witness Printer took 70.12 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: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:12:04,446 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 349.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.12 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 45.42 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. * RCFGBuilder took 662.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 94.4 MB). Peak memory consumption was 94.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1044.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -104.7 MB). Peak memory consumption was 156.8 MB. Max. memory is 11.5 GB. * Witness Printer took 70.12 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: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 619]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L188] int pumpRunning = 0; [L189] int systemActive = 1; [L512] int waterLevel = 1; [L513] int methaneLevelCritical = 0; [L827] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; [L122] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] 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] [L445] int splverifierCounter ; [L446] int tmp ; [L447] int tmp___0 ; [L448] int tmp___1 ; [L449] int tmp___2 ; [L452] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L454] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L456] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L462] tmp = __VERIFIER_nondet_int() [L464] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L530] COND TRUE waterLevel < 2 [L531] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L472] tmp___0 = __VERIFIER_nondet_int() [L474] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L482] tmp___2 = __VERIFIER_nondet_int() [L484] COND FALSE !(\read(tmp___2)) [L488] tmp___1 = __VERIFIER_nondet_int() [L490] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L432] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L439] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L196] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L203] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L625] int tmp ; [L626] int tmp___0 ; [L627] int tmp___1 ; [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L631] tmp = isMethaneLevelCritical() [L633] COND FALSE !(\read(tmp)) [L583] int retValue_acc ; [L586] retValue_acc = waterLevel [L587] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L637] tmp___0 = getWaterLevel() [L639] COND TRUE tmp___0 == 2 [L346] int retValue_acc ; [L349] retValue_acc = pumpRunning [L350] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L641] tmp___1 = isPumpRunning() [L643] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L619] __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, 233 locations, 3 error locations. Result: UNSAFE, OverallTime: 0.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 867 SDtfs, 1048 SDslu, 972 SDs, 0 SdLazy, 89 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=233occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 374 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 5641 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...