./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6d6d35826c479e1a93aed1cd13f45357e90f885 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-a4ecdab [2020-11-28 03:09:30,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:09:30,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:09:30,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:09:30,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:09:30,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:09:30,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:09:30,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:09:30,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:09:30,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:09:30,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:09:30,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:09:30,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:09:30,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:09:30,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:09:30,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:09:30,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:09:30,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:09:30,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:09:30,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:09:30,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:09:30,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:09:30,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:09:30,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:09:30,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:09:30,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:09:30,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:09:30,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:09:30,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:09:30,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:09:30,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:09:30,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:09:30,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:09:30,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:09:30,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:09:30,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:09:30,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:09:30,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:09:30,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:09:30,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:09:30,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:09:30,319 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:09:30,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:09:30,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:09:30,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:09:30,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:09:30,363 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:09:30,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:09:30,364 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:09:30,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:09:30,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:09:30,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:09:30,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:09:30,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:09:30,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:09:30,366 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:09:30,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:09:30,367 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:09:30,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:09:30,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:09:30,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:09:30,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:09:30,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:09:30,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:09:30,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:09:30,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:09:30,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:09:30,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:09:30,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:09:30,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:09:30,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:09:30,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6d6d35826c479e1a93aed1cd13f45357e90f885 [2020-11-28 03:09:30,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:09:30,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:09:30,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:09:30,842 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:09:30,844 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:09:30,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2020-11-28 03:09:30,945 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/bin/uautomizer/data/069666831/93d7abf404624e70a955601797469c39/FLAGba2644095 [2020-11-28 03:09:31,692 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:09:31,693 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2020-11-28 03:09:31,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/bin/uautomizer/data/069666831/93d7abf404624e70a955601797469c39/FLAGba2644095 [2020-11-28 03:09:31,951 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/bin/uautomizer/data/069666831/93d7abf404624e70a955601797469c39 [2020-11-28 03:09:31,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:09:31,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:09:31,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:09:31,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:09:31,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:09:31,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:31" (1/1) ... [2020-11-28 03:09:31,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211f6fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:31, skipping insertion in model container [2020-11-28 03:09:31,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:31" (1/1) ... [2020-11-28 03:09:31,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:09:32,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:09:32,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:09:32,506 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:09:32,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:09:32,671 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:09:32,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32 WrapperNode [2020-11-28 03:09:32,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:09:32,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:09:32,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:09:32,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:09:32,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:09:32,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:09:32,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:09:32,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:09:32,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:09:32,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:09:32,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:09:32,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:09:32,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/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 [2020-11-28 03:09:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:09:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:09:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:09:32,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:09:34,326 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:09:34,326 INFO L298 CfgBuilder]: Removed 124 assume(true) statements. [2020-11-28 03:09:34,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:34 BoogieIcfgContainer [2020-11-28 03:09:34,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:09:34,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:09:34,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:09:34,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:09:34,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:09:31" (1/3) ... [2020-11-28 03:09:34,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a82e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:34, skipping insertion in model container [2020-11-28 03:09:34,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (2/3) ... [2020-11-28 03:09:34,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a82e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:34, skipping insertion in model container [2020-11-28 03:09:34,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:34" (3/3) ... [2020-11-28 03:09:34,342 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2020-11-28 03:09:34,356 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:09:34,362 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 03:09:34,374 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 03:09:34,399 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:09:34,399 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:09:34,400 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:09:34,400 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:09:34,400 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:09:34,400 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:09:34,400 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:09:34,400 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:09:34,420 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-11-28 03:09:34,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:09:34,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:34,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:34,441 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:34,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:34,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1660407341, now seen corresponding path program 1 times [2020-11-28 03:09:34,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:34,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662795482] [2020-11-28 03:09:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:34,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662795482] [2020-11-28 03:09:34,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:34,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:09:34,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125224153] [2020-11-28 03:09:34,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:09:34,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:34,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:09:34,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:09:34,788 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 2 states. [2020-11-28 03:09:34,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:34,851 INFO L93 Difference]: Finished difference Result 175 states and 260 transitions. [2020-11-28 03:09:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:09:34,852 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-28 03:09:34,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:34,874 INFO L225 Difference]: With dead ends: 175 [2020-11-28 03:09:34,874 INFO L226 Difference]: Without dead ends: 85 [2020-11-28 03:09:34,886 INFO L677 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 [2020-11-28 03:09:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-28 03:09:34,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-11-28 03:09:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-28 03:09:34,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2020-11-28 03:09:34,960 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 16 [2020-11-28 03:09:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:34,961 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2020-11-28 03:09:34,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:09:34,962 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2020-11-28 03:09:34,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:09:34,964 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:34,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:34,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:09:34,966 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:34,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:34,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1587803058, now seen corresponding path program 1 times [2020-11-28 03:09:34,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:34,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517830267] [2020-11-28 03:09:34,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:35,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517830267] [2020-11-28 03:09:35,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:35,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:09:35,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441851749] [2020-11-28 03:09:35,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:09:35,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:35,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:09:35,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:09:35,181 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand 3 states. [2020-11-28 03:09:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:35,193 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2020-11-28 03:09:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:09:35,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 03:09:35,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:35,195 INFO L225 Difference]: With dead ends: 85 [2020-11-28 03:09:35,195 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 03:09:35,197 INFO L677 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 [2020-11-28 03:09:35,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 03:09:35,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-28 03:09:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 03:09:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2020-11-28 03:09:35,203 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2020-11-28 03:09:35,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:35,204 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2020-11-28 03:09:35,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:09:35,204 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2020-11-28 03:09:35,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:09:35,205 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:35,205 INFO L422 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] [2020-11-28 03:09:35,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:09:35,206 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:35,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:35,207 INFO L82 PathProgramCache]: Analyzing trace with hash 337421565, now seen corresponding path program 1 times [2020-11-28 03:09:35,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:35,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674092141] [2020-11-28 03:09:35,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:35,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674092141] [2020-11-28 03:09:35,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:35,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:09:35,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203510443] [2020-11-28 03:09:35,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:09:35,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:35,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:09:35,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:09:35,326 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 3 states. [2020-11-28 03:09:35,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:35,355 INFO L93 Difference]: Finished difference Result 105 states and 153 transitions. [2020-11-28 03:09:35,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:09:35,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-28 03:09:35,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:35,358 INFO L225 Difference]: With dead ends: 105 [2020-11-28 03:09:35,358 INFO L226 Difference]: Without dead ends: 72 [2020-11-28 03:09:35,359 INFO L677 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 [2020-11-28 03:09:35,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-28 03:09:35,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-11-28 03:09:35,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-28 03:09:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2020-11-28 03:09:35,382 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 22 [2020-11-28 03:09:35,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:35,383 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 99 transitions. [2020-11-28 03:09:35,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:09:35,384 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions. [2020-11-28 03:09:35,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:09:35,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:35,387 INFO L422 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] [2020-11-28 03:09:35,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:09:35,387 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:35,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:35,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1224569535, now seen corresponding path program 1 times [2020-11-28 03:09:35,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:35,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874697758] [2020-11-28 03:09:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:35,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874697758] [2020-11-28 03:09:35,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:35,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:09:35,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203575712] [2020-11-28 03:09:35,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:09:35,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:35,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:09:35,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:09:35,540 INFO L87 Difference]: Start difference. First operand 68 states and 99 transitions. Second operand 3 states. [2020-11-28 03:09:35,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:35,616 INFO L93 Difference]: Finished difference Result 171 states and 254 transitions. [2020-11-28 03:09:35,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:09:35,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-28 03:09:35,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:35,620 INFO L225 Difference]: With dead ends: 171 [2020-11-28 03:09:35,620 INFO L226 Difference]: Without dead ends: 109 [2020-11-28 03:09:35,621 INFO L677 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 [2020-11-28 03:09:35,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-28 03:09:35,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-11-28 03:09:35,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-28 03:09:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 155 transitions. [2020-11-28 03:09:35,650 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 155 transitions. Word has length 23 [2020-11-28 03:09:35,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:35,650 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 155 transitions. [2020-11-28 03:09:35,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:09:35,651 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 155 transitions. [2020-11-28 03:09:35,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:09:35,653 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:35,653 INFO L422 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] [2020-11-28 03:09:35,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:09:35,654 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:35,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:35,655 INFO L82 PathProgramCache]: Analyzing trace with hash -840484654, now seen corresponding path program 1 times [2020-11-28 03:09:35,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:35,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781514835] [2020-11-28 03:09:35,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:35,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781514835] [2020-11-28 03:09:35,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:35,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:09:35,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781733359] [2020-11-28 03:09:35,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:09:35,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:35,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:09:35,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:09:35,809 INFO L87 Difference]: Start difference. First operand 107 states and 155 transitions. Second operand 5 states. [2020-11-28 03:09:35,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:35,970 INFO L93 Difference]: Finished difference Result 399 states and 585 transitions. [2020-11-28 03:09:35,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:09:35,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-28 03:09:35,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:35,979 INFO L225 Difference]: With dead ends: 399 [2020-11-28 03:09:35,979 INFO L226 Difference]: Without dead ends: 298 [2020-11-28 03:09:35,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:09:35,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-28 03:09:36,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 194. [2020-11-28 03:09:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-28 03:09:36,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 272 transitions. [2020-11-28 03:09:36,034 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 272 transitions. Word has length 25 [2020-11-28 03:09:36,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:36,035 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 272 transitions. [2020-11-28 03:09:36,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:09:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 272 transitions. [2020-11-28 03:09:36,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:09:36,044 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:36,044 INFO L422 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] [2020-11-28 03:09:36,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:09:36,045 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:36,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:36,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1495173652, now seen corresponding path program 1 times [2020-11-28 03:09:36,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:36,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439259292] [2020-11-28 03:09:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:36,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:36,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439259292] [2020-11-28 03:09:36,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:36,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:09:36,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428648263] [2020-11-28 03:09:36,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:09:36,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:36,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:09:36,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:09:36,174 INFO L87 Difference]: Start difference. First operand 194 states and 272 transitions. Second operand 5 states. [2020-11-28 03:09:36,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:36,317 INFO L93 Difference]: Finished difference Result 398 states and 570 transitions. [2020-11-28 03:09:36,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:09:36,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-28 03:09:36,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:36,320 INFO L225 Difference]: With dead ends: 398 [2020-11-28 03:09:36,320 INFO L226 Difference]: Without dead ends: 396 [2020-11-28 03:09:36,321 INFO L677 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 [2020-11-28 03:09:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-11-28 03:09:36,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 194. [2020-11-28 03:09:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-28 03:09:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 270 transitions. [2020-11-28 03:09:36,351 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 270 transitions. Word has length 26 [2020-11-28 03:09:36,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:36,355 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 270 transitions. [2020-11-28 03:09:36,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:09:36,356 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 270 transitions. [2020-11-28 03:09:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 03:09:36,361 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:36,361 INFO L422 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] [2020-11-28 03:09:36,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:09:36,362 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:36,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:36,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1499969411, now seen corresponding path program 1 times [2020-11-28 03:09:36,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:36,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184046197] [2020-11-28 03:09:36,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:36,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184046197] [2020-11-28 03:09:36,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:36,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:09:36,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817203608] [2020-11-28 03:09:36,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:09:36,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:36,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:09:36,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:09:36,453 INFO L87 Difference]: Start difference. First operand 194 states and 270 transitions. Second operand 4 states. [2020-11-28 03:09:36,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:36,630 INFO L93 Difference]: Finished difference Result 392 states and 557 transitions. [2020-11-28 03:09:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:09:36,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-11-28 03:09:36,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:36,633 INFO L225 Difference]: With dead ends: 392 [2020-11-28 03:09:36,633 INFO L226 Difference]: Without dead ends: 291 [2020-11-28 03:09:36,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:09:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-11-28 03:09:36,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2020-11-28 03:09:36,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-28 03:09:36,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 399 transitions. [2020-11-28 03:09:36,672 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 399 transitions. Word has length 33 [2020-11-28 03:09:36,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:36,674 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 399 transitions. [2020-11-28 03:09:36,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:09:36,674 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 399 transitions. [2020-11-28 03:09:36,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 03:09:36,677 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:36,677 INFO L422 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] [2020-11-28 03:09:36,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:09:36,678 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:36,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:36,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1515134207, now seen corresponding path program 1 times [2020-11-28 03:09:36,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:36,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115999654] [2020-11-28 03:09:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:36,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115999654] [2020-11-28 03:09:36,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:36,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:09:36,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863237799] [2020-11-28 03:09:36,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:09:36,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:36,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:09:36,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:09:36,775 INFO L87 Difference]: Start difference. First operand 287 states and 399 transitions. Second operand 4 states. [2020-11-28 03:09:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:36,862 INFO L93 Difference]: Finished difference Result 817 states and 1156 transitions. [2020-11-28 03:09:36,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:09:36,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-11-28 03:09:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:36,868 INFO L225 Difference]: With dead ends: 817 [2020-11-28 03:09:36,868 INFO L226 Difference]: Without dead ends: 621 [2020-11-28 03:09:36,872 INFO L677 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 [2020-11-28 03:09:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-11-28 03:09:36,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 287. [2020-11-28 03:09:36,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-28 03:09:36,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 397 transitions. [2020-11-28 03:09:36,908 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 397 transitions. Word has length 33 [2020-11-28 03:09:36,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:36,911 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 397 transitions. [2020-11-28 03:09:36,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:09:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 397 transitions. [2020-11-28 03:09:36,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 03:09:36,912 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:36,913 INFO L422 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] [2020-11-28 03:09:36,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:09:36,913 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:36,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:36,914 INFO L82 PathProgramCache]: Analyzing trace with hash 928328193, now seen corresponding path program 1 times [2020-11-28 03:09:36,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:36,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26678] [2020-11-28 03:09:36,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:37,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26678] [2020-11-28 03:09:37,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:37,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:09:37,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165409554] [2020-11-28 03:09:37,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:09:37,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:37,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:09:37,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:09:37,029 INFO L87 Difference]: Start difference. First operand 287 states and 397 transitions. Second operand 5 states. [2020-11-28 03:09:37,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:37,210 INFO L93 Difference]: Finished difference Result 609 states and 854 transitions. [2020-11-28 03:09:37,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:09:37,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-11-28 03:09:37,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:37,214 INFO L225 Difference]: With dead ends: 609 [2020-11-28 03:09:37,214 INFO L226 Difference]: Without dead ends: 413 [2020-11-28 03:09:37,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:09:37,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-11-28 03:09:37,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 318. [2020-11-28 03:09:37,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-11-28 03:09:37,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 443 transitions. [2020-11-28 03:09:37,262 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 443 transitions. Word has length 33 [2020-11-28 03:09:37,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:37,264 INFO L481 AbstractCegarLoop]: Abstraction has 318 states and 443 transitions. [2020-11-28 03:09:37,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:09:37,265 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 443 transitions. [2020-11-28 03:09:37,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-28 03:09:37,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:37,268 INFO L422 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] [2020-11-28 03:09:37,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 03:09:37,268 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:37,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:37,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1797792970, now seen corresponding path program 1 times [2020-11-28 03:09:37,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:37,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488210163] [2020-11-28 03:09:37,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:37,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:09:37,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488210163] [2020-11-28 03:09:37,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:37,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:09:37,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762324773] [2020-11-28 03:09:37,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:09:37,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:37,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:09:37,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:09:37,370 INFO L87 Difference]: Start difference. First operand 318 states and 443 transitions. Second operand 5 states. [2020-11-28 03:09:37,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:37,475 INFO L93 Difference]: Finished difference Result 902 states and 1251 transitions. [2020-11-28 03:09:37,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:09:37,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-11-28 03:09:37,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:37,486 INFO L225 Difference]: With dead ends: 902 [2020-11-28 03:09:37,486 INFO L226 Difference]: Without dead ends: 590 [2020-11-28 03:09:37,488 INFO L677 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 [2020-11-28 03:09:37,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-11-28 03:09:37,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 330. [2020-11-28 03:09:37,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-11-28 03:09:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 455 transitions. [2020-11-28 03:09:37,550 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 455 transitions. Word has length 47 [2020-11-28 03:09:37,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:37,550 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 455 transitions. [2020-11-28 03:09:37,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:09:37,551 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 455 transitions. [2020-11-28 03:09:37,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-28 03:09:37,552 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:37,553 INFO L422 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] [2020-11-28 03:09:37,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 03:09:37,555 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:37,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:37,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1987701236, now seen corresponding path program 1 times [2020-11-28 03:09:37,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:37,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20176986] [2020-11-28 03:09:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 03:09:37,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20176986] [2020-11-28 03:09:37,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:37,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:09:37,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454911317] [2020-11-28 03:09:37,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:09:37,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:37,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:09:37,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:09:37,645 INFO L87 Difference]: Start difference. First operand 330 states and 455 transitions. Second operand 5 states. [2020-11-28 03:09:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:37,766 INFO L93 Difference]: Finished difference Result 713 states and 973 transitions. [2020-11-28 03:09:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:09:37,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-11-28 03:09:37,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:37,770 INFO L225 Difference]: With dead ends: 713 [2020-11-28 03:09:37,770 INFO L226 Difference]: Without dead ends: 389 [2020-11-28 03:09:37,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:09:37,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-11-28 03:09:37,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 261. [2020-11-28 03:09:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-11-28 03:09:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 351 transitions. [2020-11-28 03:09:37,808 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 351 transitions. Word has length 47 [2020-11-28 03:09:37,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:37,809 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 351 transitions. [2020-11-28 03:09:37,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:09:37,809 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 351 transitions. [2020-11-28 03:09:37,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-28 03:09:37,810 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:37,810 INFO L422 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] [2020-11-28 03:09:37,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 03:09:37,811 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:37,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:37,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2112793356, now seen corresponding path program 1 times [2020-11-28 03:09:37,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:37,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97329552] [2020-11-28 03:09:37,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:37,907 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:37,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97329552] [2020-11-28 03:09:37,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706868328] [2020-11-28 03:09:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/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 [2020-11-28 03:09:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:38,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:09:38,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:38,177 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:38,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:09:38,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-28 03:09:38,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712974605] [2020-11-28 03:09:38,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:09:38,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:38,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:09:38,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:09:38,179 INFO L87 Difference]: Start difference. First operand 261 states and 351 transitions. Second operand 6 states. [2020-11-28 03:09:38,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:38,552 INFO L93 Difference]: Finished difference Result 735 states and 1011 transitions. [2020-11-28 03:09:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:09:38,553 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-11-28 03:09:38,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:38,557 INFO L225 Difference]: With dead ends: 735 [2020-11-28 03:09:38,557 INFO L226 Difference]: Without dead ends: 534 [2020-11-28 03:09:38,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:09:38,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-11-28 03:09:38,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 321. [2020-11-28 03:09:38,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-11-28 03:09:38,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 433 transitions. [2020-11-28 03:09:38,601 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 433 transitions. Word has length 48 [2020-11-28 03:09:38,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:38,601 INFO L481 AbstractCegarLoop]: Abstraction has 321 states and 433 transitions. [2020-11-28 03:09:38,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:09:38,601 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 433 transitions. [2020-11-28 03:09:38,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-28 03:09:38,602 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:38,602 INFO L422 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] [2020-11-28 03:09:38,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-28 03:09:38,829 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:38,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:38,829 INFO L82 PathProgramCache]: Analyzing trace with hash -206469727, now seen corresponding path program 2 times [2020-11-28 03:09:38,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:38,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880784341] [2020-11-28 03:09:38,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:38,907 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:39,032 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:39,115 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:09:39,116 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:09:39,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-28 03:09:39,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:09:39 BoogieIcfgContainer [2020-11-28 03:09:39,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:09:39,332 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:09:39,332 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:09:39,332 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:09:39,332 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:34" (3/4) ... [2020-11-28 03:09:39,336 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:09:39,528 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9d46a04a-90f4-448e-ae0d-0d97e99f6615/bin/uautomizer/witness.graphml [2020-11-28 03:09:39,528 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:09:39,531 INFO L168 Benchmark]: Toolchain (without parser) took 7573.32 ms. Allocated memory was 88.1 MB in the beginning and 134.2 MB in the end (delta: 46.1 MB). Free memory was 57.7 MB in the beginning and 47.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 55.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:39,532 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 47.4 MB in the beginning and 47.4 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:09:39,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.90 ms. Allocated memory is still 88.1 MB. Free memory was 57.4 MB in the beginning and 55.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:39,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.60 ms. Allocated memory is still 88.1 MB. Free memory was 55.5 MB in the beginning and 52.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:39,534 INFO L168 Benchmark]: Boogie Preprocessor took 46.65 ms. Allocated memory is still 88.1 MB. Free memory was 52.6 MB in the beginning and 50.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:39,536 INFO L168 Benchmark]: RCFGBuilder took 1491.45 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.1 MB in the beginning and 49.5 MB in the end (delta: 593.6 kB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:39,537 INFO L168 Benchmark]: TraceAbstraction took 4998.91 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 49.5 MB in the beginning and 72.8 MB in the end (delta: -23.3 MB). Peak memory consumption was 46.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:39,537 INFO L168 Benchmark]: Witness Printer took 197.01 ms. Allocated memory is still 134.2 MB. Free memory was 72.8 MB in the beginning and 47.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:39,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 47.4 MB in the beginning and 47.4 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 714.90 ms. Allocated memory is still 88.1 MB. Free memory was 57.4 MB in the beginning and 55.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 115.60 ms. Allocated memory is still 88.1 MB. Free memory was 55.5 MB in the beginning and 52.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.65 ms. Allocated memory is still 88.1 MB. Free memory was 52.6 MB in the beginning and 50.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1491.45 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.1 MB in the beginning and 49.5 MB in the end (delta: 593.6 kB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4998.91 ms. Allocated memory was 107.0 MB in the beginning and 134.2 MB in the end (delta: 27.3 MB). Free memory was 49.5 MB in the beginning and 72.8 MB in the end (delta: -23.3 MB). Peak memory consumption was 46.8 MB. Max. memory is 16.1 GB. * Witness Printer took 197.01 ms. Allocated memory is still 134.2 MB. Free memory was 72.8 MB in the beginning and 47.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L122] int pumpRunning = 0; [L123] int systemActive = 1; [L317] int cleanupTimeShifts = 4; [L417] int waterLevel = 1; [L418] int methaneLevelCritical = 0; [L715] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L393] int retValue_acc ; [L394] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L537] int retValue_acc ; [L540] retValue_acc = 1 [L541] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L400] tmp = valid_product() [L402] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L435] COND TRUE waterLevel < 2 [L436] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L130] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L137] COND TRUE \read(systemActive) [L159] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L162] COND TRUE ! pumpRunning [L274] int retValue_acc ; [L275] int tmp ; [L276] int tmp___0 ; [L497] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L500] COND FALSE !(waterLevel < 2) [L504] retValue_acc = 0 [L505] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L280] tmp = isHighWaterSensorDry() [L282] COND FALSE !(\read(tmp)) [L285] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L287] retValue_acc = tmp___0 [L288] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L164] tmp = isHighWaterLevel() [L166] COND TRUE \read(tmp) [L193] int tmp ; [L218] int retValue_acc ; [L456] int retValue_acc ; [L459] retValue_acc = methaneLevelCritical [L460] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L222] retValue_acc = isMethaneLevelCritical() [L224] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L197] tmp = isMethaneAlarm() [L199] COND FALSE !(\read(tmp)) [L187] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L913] int tmp ; [L914] int tmp___0 ; [L488] int retValue_acc ; [L491] retValue_acc = waterLevel [L492] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L918] tmp = getWaterLevel() [L920] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L130] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L423] COND TRUE waterLevel > 0 [L424] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L137] COND TRUE \read(systemActive) [L159] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L162] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L913] int tmp ; [L914] int tmp___0 ; [L488] int retValue_acc ; [L491] retValue_acc = waterLevel [L492] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L918] tmp = getWaterLevel() [L920] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L130] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L423] COND TRUE waterLevel > 0 [L424] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L137] COND TRUE \read(systemActive) [L159] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L162] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L913] int tmp ; [L914] int tmp___0 ; [L488] int retValue_acc ; [L491] retValue_acc = waterLevel [L492] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L918] tmp = getWaterLevel() [L920] COND TRUE tmp == 0 [L229] int retValue_acc ; [L232] retValue_acc = pumpRunning [L233] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L922] tmp___0 = isPumpRunning() [L924] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product43.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 92 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1093 SDtfs, 1259 SDslu, 1592 SDs, 0 SdLazy, 235 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=330occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 1346 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 481 NumberOfCodeBlocks, 481 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 405 ConstructedInterpolants, 0 QuantifiedInterpolants, 26739 SizeOfPredicates, 4 NumberOfNonLiveVariables, 413 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 50/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...