./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2262bd86-3d06-4d88-ac8c-f66c1d4f435b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2262bd86-3d06-4d88-ac8c-f66c1d4f435b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2262bd86-3d06-4d88-ac8c-f66c1d4f435b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2262bd86-3d06-4d88-ac8c-f66c1d4f435b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2262bd86-3d06-4d88-ac8c-f66c1d4f435b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2262bd86-3d06-4d88-ac8c-f66c1d4f435b/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 0f3978068d3e88eb2e8d08ee6f85f2ba09bbc729 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 06:27:42,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 06:27:42,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 06:27:42,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 06:27:42,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 06:27:42,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 06:27:42,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 06:27:42,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 06:27:42,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 06:27:42,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 06:27:42,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 06:27:42,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 06:27:42,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 06:27:42,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 06:27:42,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 06:27:42,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 06:27:42,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 06:27:42,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 06:27:42,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 06:27:42,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 06:27:42,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 06:27:42,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 06:27:42,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 06:27:42,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 06:27:42,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 06:27:42,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 06:27:42,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 06:27:42,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 06:27:42,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 06:27:42,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 06:27:42,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 06:27:42,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 06:27:42,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 06:27:42,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 06:27:42,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 06:27:42,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 06:27:42,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 06:27:42,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 06:27:42,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 06:27:42,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 06:27:42,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 06:27:42,724 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2262bd86-3d06-4d88-ac8c-f66c1d4f435b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 06:27:42,737 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 06:27:42,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 06:27:42,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 06:27:42,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 06:27:42,739 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 06:27:42,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 06:27:42,739 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 06:27:42,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 06:27:42,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 06:27:42,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 06:27:42,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 06:27:42,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 06:27:42,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 06:27:42,740 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 06:27:42,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 06:27:42,740 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 06:27:42,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 06:27:42,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 06:27:42,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 06:27:42,741 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 06:27:42,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 06:27:42,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:27:42,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 06:27:42,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 06:27:42,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 06:27:42,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 06:27:42,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 06:27:42,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 06:27:42,742 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_2262bd86-3d06-4d88-ac8c-f66c1d4f435b/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 -> 0f3978068d3e88eb2e8d08ee6f85f2ba09bbc729 [2019-11-20 06:27:42,903 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 06:27:42,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 06:27:42,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 06:27:42,918 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 06:27:42,918 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 06:27:42,919 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2262bd86-3d06-4d88-ac8c-f66c1d4f435b/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2019-11-20 06:27:42,969 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2262bd86-3d06-4d88-ac8c-f66c1d4f435b/bin/uautomizer/data/bdb1c5f21/d7ff956730b94e8f9400c673f11e8d5f/FLAG518711877 [2019-11-20 06:27:43,418 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 06:27:43,422 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2262bd86-3d06-4d88-ac8c-f66c1d4f435b/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2019-11-20 06:27:43,437 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2262bd86-3d06-4d88-ac8c-f66c1d4f435b/bin/uautomizer/data/bdb1c5f21/d7ff956730b94e8f9400c673f11e8d5f/FLAG518711877 [2019-11-20 06:27:43,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2262bd86-3d06-4d88-ac8c-f66c1d4f435b/bin/uautomizer/data/bdb1c5f21/d7ff956730b94e8f9400c673f11e8d5f [2019-11-20 06:27:43,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 06:27:43,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 06:27:43,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 06:27:43,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 06:27:43,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 06:27:43,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:27:43" (1/1) ... [2019-11-20 06:27:43,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7e20c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:43, skipping insertion in model container [2019-11-20 06:27:43,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:27:43" (1/1) ... [2019-11-20 06:27:43,726 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 06:27:43,762 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 06:27:44,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:27:44,108 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 06:27:44,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 06:27:44,228 INFO L192 MainTranslator]: Completed translation [2019-11-20 06:27:44,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:44 WrapperNode [2019-11-20 06:27:44,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 06:27:44,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 06:27:44,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 06:27:44,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 06:27:44,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:44" (1/1) ... [2019-11-20 06:27:44,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:44" (1/1) ... [2019-11-20 06:27:44,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 06:27:44,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 06:27:44,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 06:27:44,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 06:27:44,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:44" (1/1) ... [2019-11-20 06:27:44,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:44" (1/1) ... [2019-11-20 06:27:44,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:44" (1/1) ... [2019-11-20 06:27:44,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:44" (1/1) ... [2019-11-20 06:27:44,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:44" (1/1) ... [2019-11-20 06:27:44,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:44" (1/1) ... [2019-11-20 06:27:44,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:44" (1/1) ... [2019-11-20 06:27:44,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 06:27:44,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 06:27:44,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 06:27:44,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 06:27:44,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2262bd86-3d06-4d88-ac8c-f66c1d4f435b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 06:27:44,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 06:27:44,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-20 06:27:44,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 06:27:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 06:27:45,108 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 06:27:45,108 INFO L285 CfgBuilder]: Removed 116 assume(true) statements. [2019-11-20 06:27:45,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:27:45 BoogieIcfgContainer [2019-11-20 06:27:45,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 06:27:45,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 06:27:45,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 06:27:45,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 06:27:45,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:27:43" (1/3) ... [2019-11-20 06:27:45,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23719c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:27:45, skipping insertion in model container [2019-11-20 06:27:45,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:27:44" (2/3) ... [2019-11-20 06:27:45,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23719c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:27:45, skipping insertion in model container [2019-11-20 06:27:45,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:27:45" (3/3) ... [2019-11-20 06:27:45,121 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product42.cil.c [2019-11-20 06:27:45,129 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 06:27:45,138 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-20 06:27:45,146 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-20 06:27:45,168 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 06:27:45,169 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 06:27:45,169 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 06:27:45,169 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 06:27:45,169 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 06:27:45,169 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 06:27:45,170 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 06:27:45,170 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 06:27:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2019-11-20 06:27:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 06:27:45,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:27:45,191 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:27:45,191 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:27:45,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:27:45,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1594902839, now seen corresponding path program 1 times [2019-11-20 06:27:45,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:27:45,202 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466717931] [2019-11-20 06:27:45,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:27:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:27:45,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:27:45,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466717931] [2019-11-20 06:27:45,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:27:45,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 06:27:45,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352706864] [2019-11-20 06:27:45,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 06:27:45,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:27:45,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 06:27:45,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 06:27:45,434 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 2 states. [2019-11-20 06:27:45,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:27:45,461 INFO L93 Difference]: Finished difference Result 168 states and 251 transitions. [2019-11-20 06:27:45,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 06:27:45,463 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-11-20 06:27:45,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:27:45,473 INFO L225 Difference]: With dead ends: 168 [2019-11-20 06:27:45,473 INFO L226 Difference]: Without dead ends: 83 [2019-11-20 06:27:45,476 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 06:27:45,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-20 06:27:45,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-11-20 06:27:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-11-20 06:27:45,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2019-11-20 06:27:45,511 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 16 [2019-11-20 06:27:45,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:27:45,512 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2019-11-20 06:27:45,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 06:27:45,512 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2019-11-20 06:27:45,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 06:27:45,513 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:27:45,513 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:27:45,514 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:27:45,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:27:45,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1653307560, now seen corresponding path program 1 times [2019-11-20 06:27:45,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:27:45,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319379319] [2019-11-20 06:27:45,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:27:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:27:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:27:45,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319379319] [2019-11-20 06:27:45,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:27:45,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 06:27:45,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004516265] [2019-11-20 06:27:45,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 06:27:45,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:27:45,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 06:27:45,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:27:45,644 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand 3 states. [2019-11-20 06:27:45,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:27:45,656 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2019-11-20 06:27:45,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 06:27:45,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-20 06:27:45,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:27:45,658 INFO L225 Difference]: With dead ends: 83 [2019-11-20 06:27:45,658 INFO L226 Difference]: Without dead ends: 37 [2019-11-20 06:27:45,659 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:27:45,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-20 06:27:45,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-20 06:27:45,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-20 06:27:45,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2019-11-20 06:27:45,667 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2019-11-20 06:27:45,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:27:45,668 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2019-11-20 06:27:45,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 06:27:45,668 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2019-11-20 06:27:45,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 06:27:45,669 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:27:45,669 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] [2019-11-20 06:27:45,669 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:27:45,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:27:45,670 INFO L82 PathProgramCache]: Analyzing trace with hash 533078269, now seen corresponding path program 1 times [2019-11-20 06:27:45,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:27:45,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763949950] [2019-11-20 06:27:45,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:27:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:27:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:27:45,791 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763949950] [2019-11-20 06:27:45,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:27:45,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 06:27:45,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666938078] [2019-11-20 06:27:45,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 06:27:45,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:27:45,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 06:27:45,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:27:45,793 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand 5 states. [2019-11-20 06:27:45,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:27:45,872 INFO L93 Difference]: Finished difference Result 68 states and 98 transitions. [2019-11-20 06:27:45,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 06:27:45,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-20 06:27:45,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:27:45,873 INFO L225 Difference]: With dead ends: 68 [2019-11-20 06:27:45,873 INFO L226 Difference]: Without dead ends: 37 [2019-11-20 06:27:45,874 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:27:45,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-20 06:27:45,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-20 06:27:45,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-20 06:27:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-11-20 06:27:45,880 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 22 [2019-11-20 06:27:45,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:27:45,880 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-11-20 06:27:45,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 06:27:45,881 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2019-11-20 06:27:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-20 06:27:45,881 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:27:45,882 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] [2019-11-20 06:27:45,882 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:27:45,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:27:45,882 INFO L82 PathProgramCache]: Analyzing trace with hash 545820985, now seen corresponding path program 1 times [2019-11-20 06:27:45,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:27:45,883 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995464204] [2019-11-20 06:27:45,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:27:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:27:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:27:45,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995464204] [2019-11-20 06:27:45,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:27:45,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 06:27:45,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330065720] [2019-11-20 06:27:45,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 06:27:45,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:27:45,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 06:27:45,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:27:45,940 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-11-20 06:27:45,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:27:45,962 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2019-11-20 06:27:45,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 06:27:45,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-20 06:27:45,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:27:45,964 INFO L225 Difference]: With dead ends: 89 [2019-11-20 06:27:45,964 INFO L226 Difference]: Without dead ends: 58 [2019-11-20 06:27:45,964 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:27:45,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-20 06:27:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2019-11-20 06:27:45,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-20 06:27:45,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2019-11-20 06:27:45,973 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 23 [2019-11-20 06:27:45,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:27:45,973 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2019-11-20 06:27:45,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 06:27:45,973 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2019-11-20 06:27:45,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-20 06:27:45,974 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:27:45,975 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, 1] [2019-11-20 06:27:45,975 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:27:45,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:27:45,975 INFO L82 PathProgramCache]: Analyzing trace with hash 2110814541, now seen corresponding path program 1 times [2019-11-20 06:27:45,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:27:45,976 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245203477] [2019-11-20 06:27:45,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:27:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:27:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:27:46,061 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245203477] [2019-11-20 06:27:46,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:27:46,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 06:27:46,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414456357] [2019-11-20 06:27:46,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 06:27:46,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:27:46,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 06:27:46,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:27:46,063 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand 5 states. [2019-11-20 06:27:46,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:27:46,195 INFO L93 Difference]: Finished difference Result 266 states and 385 transitions. [2019-11-20 06:27:46,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 06:27:46,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-11-20 06:27:46,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:27:46,198 INFO L225 Difference]: With dead ends: 266 [2019-11-20 06:27:46,198 INFO L226 Difference]: Without dead ends: 216 [2019-11-20 06:27:46,199 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-20 06:27:46,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2019-11-20 06:27:46,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 100. [2019-11-20 06:27:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-20 06:27:46,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 139 transitions. [2019-11-20 06:27:46,216 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 139 transitions. Word has length 29 [2019-11-20 06:27:46,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:27:46,217 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 139 transitions. [2019-11-20 06:27:46,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 06:27:46,217 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 139 transitions. [2019-11-20 06:27:46,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 06:27:46,218 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:27:46,219 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, 1, 1] [2019-11-20 06:27:46,219 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:27:46,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:27:46,219 INFO L82 PathProgramCache]: Analyzing trace with hash 331369175, now seen corresponding path program 1 times [2019-11-20 06:27:46,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:27:46,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163600605] [2019-11-20 06:27:46,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:27:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:27:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:27:46,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163600605] [2019-11-20 06:27:46,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:27:46,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 06:27:46,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025350870] [2019-11-20 06:27:46,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 06:27:46,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:27:46,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 06:27:46,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:27:46,312 INFO L87 Difference]: Start difference. First operand 100 states and 139 transitions. Second operand 5 states. [2019-11-20 06:27:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:27:46,445 INFO L93 Difference]: Finished difference Result 280 states and 394 transitions. [2019-11-20 06:27:46,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 06:27:46,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-11-20 06:27:46,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:27:46,449 INFO L225 Difference]: With dead ends: 280 [2019-11-20 06:27:46,449 INFO L226 Difference]: Without dead ends: 278 [2019-11-20 06:27:46,450 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-20 06:27:46,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-11-20 06:27:46,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2019-11-20 06:27:46,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-20 06:27:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 138 transitions. [2019-11-20 06:27:46,478 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 138 transitions. Word has length 30 [2019-11-20 06:27:46,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:27:46,479 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 138 transitions. [2019-11-20 06:27:46,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 06:27:46,479 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 138 transitions. [2019-11-20 06:27:46,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 06:27:46,483 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:27:46,484 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, 1, 1, 1, 1, 1] [2019-11-20 06:27:46,487 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:27:46,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:27:46,488 INFO L82 PathProgramCache]: Analyzing trace with hash 261712181, now seen corresponding path program 1 times [2019-11-20 06:27:46,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:27:46,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656507142] [2019-11-20 06:27:46,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:27:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:27:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:27:46,564 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656507142] [2019-11-20 06:27:46,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:27:46,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 06:27:46,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658945823] [2019-11-20 06:27:46,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 06:27:46,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:27:46,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 06:27:46,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:27:46,566 INFO L87 Difference]: Start difference. First operand 100 states and 138 transitions. Second operand 5 states. [2019-11-20 06:27:46,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:27:46,628 INFO L93 Difference]: Finished difference Result 270 states and 372 transitions. [2019-11-20 06:27:46,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 06:27:46,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2019-11-20 06:27:46,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:27:46,630 INFO L225 Difference]: With dead ends: 270 [2019-11-20 06:27:46,630 INFO L226 Difference]: Without dead ends: 176 [2019-11-20 06:27:46,631 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-20 06:27:46,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2019-11-20 06:27:46,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 106. [2019-11-20 06:27:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-11-20 06:27:46,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 144 transitions. [2019-11-20 06:27:46,648 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 144 transitions. Word has length 33 [2019-11-20 06:27:46,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:27:46,649 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 144 transitions. [2019-11-20 06:27:46,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 06:27:46,650 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 144 transitions. [2019-11-20 06:27:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 06:27:46,655 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:27:46,656 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, 1, 1, 1, 1, 1] [2019-11-20 06:27:46,656 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:27:46,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:27:46,657 INFO L82 PathProgramCache]: Analyzing trace with hash -325093833, now seen corresponding path program 1 times [2019-11-20 06:27:46,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:27:46,658 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704708243] [2019-11-20 06:27:46,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:27:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:27:46,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:27:46,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704708243] [2019-11-20 06:27:46,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:27:46,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 06:27:46,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982507217] [2019-11-20 06:27:46,714 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 06:27:46,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:27:46,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 06:27:46,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 06:27:46,715 INFO L87 Difference]: Start difference. First operand 106 states and 144 transitions. Second operand 4 states. [2019-11-20 06:27:46,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:27:46,753 INFO L93 Difference]: Finished difference Result 252 states and 342 transitions. [2019-11-20 06:27:46,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 06:27:46,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-11-20 06:27:46,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:27:46,755 INFO L225 Difference]: With dead ends: 252 [2019-11-20 06:27:46,755 INFO L226 Difference]: Without dead ends: 152 [2019-11-20 06:27:46,756 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 06:27:46,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-20 06:27:46,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 110. [2019-11-20 06:27:46,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-11-20 06:27:46,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 148 transitions. [2019-11-20 06:27:46,769 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 148 transitions. Word has length 33 [2019-11-20 06:27:46,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:27:46,769 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 148 transitions. [2019-11-20 06:27:46,769 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 06:27:46,769 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 148 transitions. [2019-11-20 06:27:46,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 06:27:46,770 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:27:46,770 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, 1, 1, 1, 1, 1] [2019-11-20 06:27:46,770 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:27:46,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:27:46,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1604957511, now seen corresponding path program 1 times [2019-11-20 06:27:46,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:27:46,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866769357] [2019-11-20 06:27:46,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:27:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:27:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:27:46,842 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866769357] [2019-11-20 06:27:46,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:27:46,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 06:27:46,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311016549] [2019-11-20 06:27:46,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 06:27:46,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:27:46,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 06:27:46,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:27:46,843 INFO L87 Difference]: Start difference. First operand 110 states and 148 transitions. Second operand 3 states. [2019-11-20 06:27:46,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:27:46,881 INFO L93 Difference]: Finished difference Result 262 states and 352 transitions. [2019-11-20 06:27:46,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 06:27:46,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-11-20 06:27:46,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:27:46,883 INFO L225 Difference]: With dead ends: 262 [2019-11-20 06:27:46,883 INFO L226 Difference]: Without dead ends: 158 [2019-11-20 06:27:46,884 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 06:27:46,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2019-11-20 06:27:46,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2019-11-20 06:27:46,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2019-11-20 06:27:46,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 206 transitions. [2019-11-20 06:27:46,900 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 206 transitions. Word has length 33 [2019-11-20 06:27:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:27:46,900 INFO L462 AbstractCegarLoop]: Abstraction has 158 states and 206 transitions. [2019-11-20 06:27:46,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 06:27:46,900 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 206 transitions. [2019-11-20 06:27:46,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 06:27:46,902 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:27:46,902 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, 1, 1, 1, 1, 1, 1] [2019-11-20 06:27:46,902 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:27:46,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:27:46,903 INFO L82 PathProgramCache]: Analyzing trace with hash -447661573, now seen corresponding path program 1 times [2019-11-20 06:27:46,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:27:46,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58385044] [2019-11-20 06:27:46,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:27:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 06:27:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 06:27:46,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58385044] [2019-11-20 06:27:46,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 06:27:46,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 06:27:46,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273896894] [2019-11-20 06:27:46,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 06:27:46,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 06:27:46,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 06:27:46,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 06:27:46,981 INFO L87 Difference]: Start difference. First operand 158 states and 206 transitions. Second operand 6 states. [2019-11-20 06:27:47,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 06:27:47,167 INFO L93 Difference]: Finished difference Result 482 states and 630 transitions. [2019-11-20 06:27:47,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 06:27:47,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-11-20 06:27:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 06:27:47,171 INFO L225 Difference]: With dead ends: 482 [2019-11-20 06:27:47,171 INFO L226 Difference]: Without dead ends: 330 [2019-11-20 06:27:47,172 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-20 06:27:47,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2019-11-20 06:27:47,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 158. [2019-11-20 06:27:47,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2019-11-20 06:27:47,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 202 transitions. [2019-11-20 06:27:47,196 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 202 transitions. Word has length 34 [2019-11-20 06:27:47,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 06:27:47,197 INFO L462 AbstractCegarLoop]: Abstraction has 158 states and 202 transitions. [2019-11-20 06:27:47,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 06:27:47,197 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 202 transitions. [2019-11-20 06:27:47,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-20 06:27:47,198 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 06:27:47,198 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 06:27:47,199 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 06:27:47,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 06:27:47,199 INFO L82 PathProgramCache]: Analyzing trace with hash -2059222374, now seen corresponding path program 1 times [2019-11-20 06:27:47,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 06:27:47,199 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411943457] [2019-11-20 06:27:47,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 06:27:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 06:27:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 06:27:47,382 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 06:27:47,382 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 06:27:47,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:27:47 BoogieIcfgContainer [2019-11-20 06:27:47,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 06:27:47,500 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 06:27:47,500 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 06:27:47,501 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 06:27:47,501 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:27:45" (3/4) ... [2019-11-20 06:27:47,503 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 06:27:47,664 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2262bd86-3d06-4d88-ac8c-f66c1d4f435b/bin/uautomizer/witness.graphml [2019-11-20 06:27:47,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 06:27:47,669 INFO L168 Benchmark]: Toolchain (without parser) took 3955.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 939.3 MB in the beginning and 1.0 GB in the end (delta: -77.0 MB). Peak memory consumption was 70.3 MB. Max. memory is 11.5 GB. [2019-11-20 06:27:47,670 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:27:47,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 514.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -190.6 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-20 06:27:47,676 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 06:27:47,676 INFO L168 Benchmark]: Boogie Preprocessor took 60.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 06:27:47,677 INFO L168 Benchmark]: RCFGBuilder took 753.37 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: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. [2019-11-20 06:27:47,677 INFO L168 Benchmark]: TraceAbstraction took 2389.55 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-11-20 06:27:47,677 INFO L168 Benchmark]: Witness Printer took 167.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-20 06:27:47,679 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 514.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -190.6 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.80 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 60.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 753.37 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: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2389.55 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: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * Witness Printer took 167.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 764]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L413] int waterLevel = 1; [L414] int methaneLevelCritical = 0; [L581] int pumpRunning = 0; [L582] int systemActive = 1; [L833] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L906] int retValue_acc ; [L907] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L824] int retValue_acc ; [L827] retValue_acc = 1 [L828] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L511] int splverifierCounter ; [L512] int tmp ; [L513] int tmp___0 ; [L514] int tmp___1 ; [L515] int tmp___2 ; [L518] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L520] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L522] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L528] tmp = __VERIFIER_nondet_int() [L530] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L431] COND TRUE waterLevel < 2 [L432] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L538] tmp___0 = __VERIFIER_nondet_int() [L540] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L548] tmp___2 = __VERIFIER_nondet_int() [L550] COND TRUE \read(tmp___2) [L755] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L589] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] COND TRUE \read(systemActive) [L618] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L621] COND TRUE ! pumpRunning [L733] int retValue_acc ; [L734] int tmp ; [L735] int tmp___0 ; [L493] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L496] COND FALSE !(waterLevel < 2) [L500] retValue_acc = 0 [L501] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L739] tmp = isHighWaterSensorDry() [L741] COND FALSE !(\read(tmp)) [L744] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L746] retValue_acc = tmp___0 [L747] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L623] tmp = isHighWaterLevel() [L625] COND TRUE \read(tmp) [L652] int tmp ; [L677] int retValue_acc ; [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L656] tmp = isMethaneAlarm() [L658] COND FALSE !(\read(tmp)) [L646] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L770] int tmp ; [L771] int tmp___0 ; [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L775] tmp = isMethaneLevelCritical() [L777] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L520] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L522] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L528] tmp = __VERIFIER_nondet_int() [L530] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L538] tmp___0 = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L443] COND FALSE !(\read(methaneLevelCritical)) [L446] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L548] tmp___2 = __VERIFIER_nondet_int() [L550] COND TRUE \read(tmp___2) [L755] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L589] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L419] COND TRUE waterLevel > 0 [L420] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L596] COND TRUE \read(systemActive) [L618] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L621] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L770] int tmp ; [L771] int tmp___0 ; [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L775] tmp = isMethaneLevelCritical() [L777] COND TRUE \read(tmp) [L688] int retValue_acc ; [L691] retValue_acc = pumpRunning [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L779] tmp___0 = isPumpRunning() [L781] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L764] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 87 locations, 3 error locations. Result: UNSAFE, OverallTime: 2.3s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 748 SDtfs, 1018 SDslu, 1178 SDs, 0 SdLazy, 167 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 580 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 13590 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...