./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/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 c0851c41d1dd56ed840a839dd5bb938ccfe6bf65 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:56:41,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:41,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:41,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:41,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:41,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:41,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:41,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:41,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:41,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:41,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:41,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:41,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:41,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:41,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:41,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:41,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:41,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:41,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:41,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:41,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:41,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:41,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:41,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:41,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:41,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:41,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:41,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:41,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:41,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:41,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:41,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:41,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:41,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:41,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:41,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:41,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:41,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:41,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:41,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:41,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:41,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:56:41,171 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:41,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:41,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:41,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:41,173 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:41,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:41,173 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:56:41,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:41,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:56:41,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:41,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:56:41,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:56:41,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:56:41,174 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:56:41,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:41,175 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:41,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:56:41,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:41,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:41,176 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:56:41,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:56:41,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:41,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:41,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:56:41,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:56:41,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:41,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:56:41,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:56:41,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/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 -> c0851c41d1dd56ed840a839dd5bb938ccfe6bf65 [2019-10-22 08:56:41,206 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:41,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:41,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:41,223 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:41,223 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:41,224 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c [2019-10-22 08:56:41,278 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/bin/uautomizer/data/81a1a66c5/a593cda7853642a6be69eb626a2f1441/FLAGfe037e6f5 [2019-10-22 08:56:41,714 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:41,715 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/sv-benchmarks/c/product-lines/minepump_spec4_product42.cil.c [2019-10-22 08:56:41,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/bin/uautomizer/data/81a1a66c5/a593cda7853642a6be69eb626a2f1441/FLAGfe037e6f5 [2019-10-22 08:56:42,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/bin/uautomizer/data/81a1a66c5/a593cda7853642a6be69eb626a2f1441 [2019-10-22 08:56:42,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:42,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:42,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:42,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:42,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:42,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:42" (1/1) ... [2019-10-22 08:56:42,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be8446e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:42, skipping insertion in model container [2019-10-22 08:56:42,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:42" (1/1) ... [2019-10-22 08:56:42,027 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:42,074 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:42,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:42,457 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:42,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:42,582 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:42,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:42 WrapperNode [2019-10-22 08:56:42,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:42,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:42,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:42,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:42,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:42" (1/1) ... [2019-10-22 08:56:42,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:42" (1/1) ... [2019-10-22 08:56:42,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:42,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:42,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:42,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:42,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:42" (1/1) ... [2019-10-22 08:56:42,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:42" (1/1) ... [2019-10-22 08:56:42,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:42" (1/1) ... [2019-10-22 08:56:42,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:42" (1/1) ... [2019-10-22 08:56:42,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:42" (1/1) ... [2019-10-22 08:56:42,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:42" (1/1) ... [2019-10-22 08:56:42,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:42" (1/1) ... [2019-10-22 08:56:42,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:42,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:42,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:42,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:42,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:42,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:56:42,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 08:56:42,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:42,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:43,679 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:43,679 INFO L284 CfgBuilder]: Removed 116 assume(true) statements. [2019-10-22 08:56:43,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:43 BoogieIcfgContainer [2019-10-22 08:56:43,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:43,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:56:43,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:56:43,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:56:43,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:56:42" (1/3) ... [2019-10-22 08:56:43,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4496bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:43, skipping insertion in model container [2019-10-22 08:56:43,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:42" (2/3) ... [2019-10-22 08:56:43,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4496bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:43, skipping insertion in model container [2019-10-22 08:56:43,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:43" (3/3) ... [2019-10-22 08:56:43,696 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2019-10-22 08:56:43,711 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:56:43,725 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 08:56:43,739 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 08:56:43,775 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:56:43,775 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:56:43,775 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:56:43,775 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:43,775 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:43,775 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:56:43,776 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:43,776 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:56:43,794 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2019-10-22 08:56:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 08:56:43,802 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:43,802 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:43,805 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:43,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:43,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1594902839, now seen corresponding path program 1 times [2019-10-22 08:56:43,821 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:43,821 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322333975] [2019-10-22 08:56:43,821 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:43,822 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:43,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:44,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322333975] [2019-10-22 08:56:44,026 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:44,026 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:56:44,027 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165482488] [2019-10-22 08:56:44,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:56:44,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:44,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:56:44,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:56:44,048 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 2 states. [2019-10-22 08:56:44,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:44,075 INFO L93 Difference]: Finished difference Result 168 states and 251 transitions. [2019-10-22 08:56:44,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:56:44,076 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 08:56:44,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:44,088 INFO L225 Difference]: With dead ends: 168 [2019-10-22 08:56:44,088 INFO L226 Difference]: Without dead ends: 83 [2019-10-22 08:56:44,091 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:56:44,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-22 08:56:44,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-10-22 08:56:44,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-22 08:56:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2019-10-22 08:56:44,131 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 16 [2019-10-22 08:56:44,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:44,132 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2019-10-22 08:56:44,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:56:44,132 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2019-10-22 08:56:44,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 08:56:44,133 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:44,133 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:44,134 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:44,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:44,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1653307560, now seen corresponding path program 1 times [2019-10-22 08:56:44,135 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:44,135 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025329478] [2019-10-22 08:56:44,135 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:44,135 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:44,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:44,259 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025329478] [2019-10-22 08:56:44,260 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:44,260 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:44,260 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904000303] [2019-10-22 08:56:44,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:44,262 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:44,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:44,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:44,263 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand 3 states. [2019-10-22 08:56:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:44,275 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2019-10-22 08:56:44,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:44,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 08:56:44,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:44,277 INFO L225 Difference]: With dead ends: 83 [2019-10-22 08:56:44,277 INFO L226 Difference]: Without dead ends: 37 [2019-10-22 08:56:44,278 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:44,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-22 08:56:44,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-22 08:56:44,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 08:56:44,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2019-10-22 08:56:44,283 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2019-10-22 08:56:44,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:44,284 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2019-10-22 08:56:44,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:44,284 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2019-10-22 08:56:44,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 08:56:44,285 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:44,285 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:44,287 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:44,288 INFO L82 PathProgramCache]: Analyzing trace with hash 533078269, now seen corresponding path program 1 times [2019-10-22 08:56:44,288 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:44,288 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362628071] [2019-10-22 08:56:44,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:44,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:44,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:44,405 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362628071] [2019-10-22 08:56:44,405 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:44,405 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:56:44,405 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286393078] [2019-10-22 08:56:44,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:44,406 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:44,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:44,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:44,407 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand 3 states. [2019-10-22 08:56:44,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:44,447 INFO L93 Difference]: Finished difference Result 68 states and 98 transitions. [2019-10-22 08:56:44,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:44,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-22 08:56:44,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:44,453 INFO L225 Difference]: With dead ends: 68 [2019-10-22 08:56:44,453 INFO L226 Difference]: Without dead ends: 37 [2019-10-22 08:56:44,454 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-22 08:56:44,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-22 08:56:44,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 08:56:44,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-10-22 08:56:44,461 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 22 [2019-10-22 08:56:44,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:44,461 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-10-22 08:56:44,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:44,462 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2019-10-22 08:56:44,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 08:56:44,462 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:44,463 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:44,463 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:44,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:44,463 INFO L82 PathProgramCache]: Analyzing trace with hash 545820985, now seen corresponding path program 1 times [2019-10-22 08:56:44,464 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:44,464 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782814153] [2019-10-22 08:56:44,464 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:44,464 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:44,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:44,532 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782814153] [2019-10-22 08:56:44,532 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:44,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:56:44,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156953305] [2019-10-22 08:56:44,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:56:44,533 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:44,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:44,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:44,540 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-10-22 08:56:44,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:44,604 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2019-10-22 08:56:44,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:44,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-22 08:56:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:44,606 INFO L225 Difference]: With dead ends: 89 [2019-10-22 08:56:44,606 INFO L226 Difference]: Without dead ends: 58 [2019-10-22 08:56:44,606 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:44,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-22 08:56:44,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2019-10-22 08:56:44,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-10-22 08:56:44,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2019-10-22 08:56:44,623 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 23 [2019-10-22 08:56:44,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:44,624 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2019-10-22 08:56:44,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:56:44,624 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2019-10-22 08:56:44,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 08:56:44,625 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:44,625 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:44,625 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:44,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:44,626 INFO L82 PathProgramCache]: Analyzing trace with hash 2110814541, now seen corresponding path program 1 times [2019-10-22 08:56:44,626 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:44,626 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944443763] [2019-10-22 08:56:44,626 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:44,626 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:44,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:44,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944443763] [2019-10-22 08:56:44,777 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:44,777 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:56:44,777 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595654191] [2019-10-22 08:56:44,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:56:44,778 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:44,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:56:44,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:56:44,779 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand 7 states. [2019-10-22 08:56:45,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:45,182 INFO L93 Difference]: Finished difference Result 347 states and 506 transitions. [2019-10-22 08:56:45,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 08:56:45,183 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2019-10-22 08:56:45,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:45,186 INFO L225 Difference]: With dead ends: 347 [2019-10-22 08:56:45,186 INFO L226 Difference]: Without dead ends: 297 [2019-10-22 08:56:45,187 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-10-22 08:56:45,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2019-10-22 08:56:45,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 140. [2019-10-22 08:56:45,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-10-22 08:56:45,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 193 transitions. [2019-10-22 08:56:45,214 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 193 transitions. Word has length 29 [2019-10-22 08:56:45,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:45,215 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 193 transitions. [2019-10-22 08:56:45,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:56:45,215 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 193 transitions. [2019-10-22 08:56:45,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-22 08:56:45,216 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:45,217 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:45,217 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:45,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:45,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1559974996, now seen corresponding path program 1 times [2019-10-22 08:56:45,218 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:45,218 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553505305] [2019-10-22 08:56:45,219 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:45,219 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:45,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 08:56:45,328 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553505305] [2019-10-22 08:56:45,328 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:45,328 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:56:45,328 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978559942] [2019-10-22 08:56:45,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:56:45,329 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:45,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:56:45,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:56:45,330 INFO L87 Difference]: Start difference. First operand 140 states and 193 transitions. Second operand 5 states. [2019-10-22 08:56:45,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:45,431 INFO L93 Difference]: Finished difference Result 388 states and 531 transitions. [2019-10-22 08:56:45,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:45,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2019-10-22 08:56:45,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:45,439 INFO L225 Difference]: With dead ends: 388 [2019-10-22 08:56:45,440 INFO L226 Difference]: Without dead ends: 254 [2019-10-22 08:56:45,440 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:56:45,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2019-10-22 08:56:45,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 149. [2019-10-22 08:56:45,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-10-22 08:56:45,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 202 transitions. [2019-10-22 08:56:45,484 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 202 transitions. Word has length 47 [2019-10-22 08:56:45,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:45,484 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 202 transitions. [2019-10-22 08:56:45,484 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:56:45,484 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 202 transitions. [2019-10-22 08:56:45,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-22 08:56:45,486 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:45,486 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:45,487 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:45,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:45,487 INFO L82 PathProgramCache]: Analyzing trace with hash -2069448086, now seen corresponding path program 1 times [2019-10-22 08:56:45,487 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:45,488 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119190645] [2019-10-22 08:56:45,488 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:45,488 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:45,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 08:56:45,552 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119190645] [2019-10-22 08:56:45,552 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:45,552 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:56:45,553 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448924452] [2019-10-22 08:56:45,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:56:45,553 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:45,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:56:45,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:56:45,554 INFO L87 Difference]: Start difference. First operand 149 states and 202 transitions. Second operand 4 states. [2019-10-22 08:56:45,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:45,594 INFO L93 Difference]: Finished difference Result 311 states and 422 transitions. [2019-10-22 08:56:45,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:56:45,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-22 08:56:45,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:45,599 INFO L225 Difference]: With dead ends: 311 [2019-10-22 08:56:45,599 INFO L226 Difference]: Without dead ends: 168 [2019-10-22 08:56:45,600 INFO L600 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 [2019-10-22 08:56:45,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-22 08:56:45,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 123. [2019-10-22 08:56:45,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-10-22 08:56:45,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 164 transitions. [2019-10-22 08:56:45,632 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 164 transitions. Word has length 47 [2019-10-22 08:56:45,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:45,633 INFO L462 AbstractCegarLoop]: Abstraction has 123 states and 164 transitions. [2019-10-22 08:56:45,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:56:45,633 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 164 transitions. [2019-10-22 08:56:45,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 08:56:45,638 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:45,638 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:45,639 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:45,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:45,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1874975382, now seen corresponding path program 1 times [2019-10-22 08:56:45,640 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:45,640 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345066261] [2019-10-22 08:56:45,640 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:45,640 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:45,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:45,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345066261] [2019-10-22 08:56:45,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278590330] [2019-10-22 08:56:45,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:45,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:56:45,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:45,969 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:45,969 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-10-22 08:56:45,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389432554] [2019-10-22 08:56:45,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:56:45,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:45,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:56:45,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:56:45,973 INFO L87 Difference]: Start difference. First operand 123 states and 164 transitions. Second operand 8 states. [2019-10-22 08:56:46,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:46,175 INFO L93 Difference]: Finished difference Result 424 states and 586 transitions. [2019-10-22 08:56:46,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 08:56:46,176 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2019-10-22 08:56:46,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:46,177 INFO L225 Difference]: With dead ends: 424 [2019-10-22 08:56:46,177 INFO L226 Difference]: Without dead ends: 330 [2019-10-22 08:56:46,178 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:56:46,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2019-10-22 08:56:46,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 162. [2019-10-22 08:56:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-10-22 08:56:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 215 transitions. [2019-10-22 08:56:46,202 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 215 transitions. Word has length 48 [2019-10-22 08:56:46,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:46,203 INFO L462 AbstractCegarLoop]: Abstraction has 162 states and 215 transitions. [2019-10-22 08:56:46,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:56:46,203 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 215 transitions. [2019-10-22 08:56:46,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-22 08:56:46,209 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:46,209 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:46,410 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:46,410 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:56:46,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:46,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1478909471, now seen corresponding path program 2 times [2019-10-22 08:56:46,411 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:46,411 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631159530] [2019-10-22 08:56:46,411 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:46,411 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:46,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:47,110 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:47,111 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:56:47,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:56:47 BoogieIcfgContainer [2019-10-22 08:56:47,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:56:47,232 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:47,232 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:47,232 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:47,232 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:43" (3/4) ... [2019-10-22 08:56:47,235 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:56:47,381 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_720f2f4f-0201-4be7-8ade-a6fe05c1aff7/bin/uautomizer/witness.graphml [2019-10-22 08:56:47,381 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:47,383 INFO L168 Benchmark]: Toolchain (without parser) took 5370.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 181.9 MB). Free memory was 939.1 MB in the beginning and 1.2 GB in the end (delta: -219.0 MB). Peak memory consumption was 214.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:47,383 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:47,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 570.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:47,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.59 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:47,384 INFO L168 Benchmark]: Boogie Preprocessor took 76.30 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. [2019-10-22 08:56:47,384 INFO L168 Benchmark]: RCFGBuilder took 929.32 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:47,384 INFO L168 Benchmark]: TraceAbstraction took 3548.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 862.9 MB in the end (delta: 186.8 MB). Peak memory consumption was 186.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:47,385 INFO L168 Benchmark]: Witness Printer took 149.88 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.5 MB). Free memory was 862.9 MB in the beginning and 1.2 GB in the end (delta: -295.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:47,386 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 570.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 90.59 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 76.30 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 929.32 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3548.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 862.9 MB in the end (delta: 186.8 MB). Peak memory consumption was 186.8 MB. Max. memory is 11.5 GB. * Witness Printer took 149.88 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.5 MB). Free memory was 862.9 MB in the beginning and 1.2 GB in the end (delta: -295.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 924]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L573] int cleanupTimeShifts = 4; [L742] int pumpRunning = 0; [L743] int systemActive = 1; [L649] int retValue_acc ; [L650] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L656] tmp = valid_product() [L658] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L674] int splverifierCounter ; [L675] int tmp ; [L676] int tmp___0 ; [L677] int tmp___1 ; [L678] int tmp___2 ; [L681] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L683] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L685] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L691] tmp = __VERIFIER_nondet_int() [L693] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND TRUE \read(tmp___2) [L915] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L749] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L756] COND TRUE \read(systemActive) [L778] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L781] COND TRUE ! pumpRunning [L893] int retValue_acc ; [L894] int tmp ; [L895] int tmp___0 ; [L127] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L899] tmp = isHighWaterSensorDry() [L901] COND FALSE !(\read(tmp)) [L904] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L906] retValue_acc = tmp___0 [L907] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L783] tmp = isHighWaterLevel() [L785] COND TRUE \read(tmp) [L812] int tmp ; [L837] int retValue_acc ; [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L841] retValue_acc = isMethaneLevelCritical() [L843] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L816] tmp = isMethaneAlarm() [L818] COND FALSE !(\read(tmp)) [L806] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L548] int tmp ; [L549] int tmp___0 ; [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L553] tmp = getWaterLevel() [L555] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L683] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L685] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L691] tmp = __VERIFIER_nondet_int() [L693] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND TRUE \read(tmp___2) [L915] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L749] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L756] COND TRUE \read(systemActive) [L778] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L781] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L548] int tmp ; [L549] int tmp___0 ; [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L553] tmp = getWaterLevel() [L555] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L683] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L685] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L691] tmp = __VERIFIER_nondet_int() [L693] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND TRUE \read(tmp___2) [L915] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L749] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L756] COND TRUE \read(systemActive) [L778] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L781] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L548] int tmp ; [L549] int tmp___0 ; [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L553] tmp = getWaterLevel() [L555] COND TRUE tmp == 0 [L848] int retValue_acc ; [L851] retValue_acc = pumpRunning [L852] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L557] tmp___0 = isPumpRunning() [L559] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L924] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 87 locations, 3 error locations. Result: UNSAFE, OverallTime: 3.4s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 600 SDtfs, 931 SDslu, 945 SDs, 0 SdLazy, 164 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 477 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 18814 SizeOfPredicates, 4 NumberOfNonLiveVariables, 394 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 50/56 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...