./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product37.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_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/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 b6dd0865ec13f793a91d3f0814cabffabbadeed3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:58:14,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:14,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:14,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:14,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:14,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:14,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:14,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:14,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:14,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:14,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:14,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:14,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:14,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:14,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:14,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:14,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:14,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:14,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:14,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:14,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:14,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:14,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:14,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:14,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:14,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:14,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:14,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:14,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:14,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:14,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:14,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:14,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:14,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:14,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:14,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:14,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:14,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:14,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:14,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:14,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:14,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:58:14,953 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:14,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:14,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:14,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:14,956 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:14,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:14,956 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:58:14,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:14,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:58:14,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:14,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:58:14,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:58:14,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:58:14,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:58:14,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:58:14,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:14,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:58:14,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:14,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:14,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:58:14,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:58:14,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:14,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:14,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:58:14,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:58:14,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:58:14,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:58:14,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:58:14,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:14,962 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_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6dd0865ec13f793a91d3f0814cabffabbadeed3 [2020-11-28 02:58:15,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:15,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:15,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:15,233 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:15,234 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:15,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c [2020-11-28 02:58:15,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/bin/uautomizer/data/630ef34cd/54dd5008e3834cb886121f085bd54438/FLAG8f35f0523 [2020-11-28 02:58:15,910 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:15,911 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c [2020-11-28 02:58:15,926 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/bin/uautomizer/data/630ef34cd/54dd5008e3834cb886121f085bd54438/FLAG8f35f0523 [2020-11-28 02:58:16,229 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/bin/uautomizer/data/630ef34cd/54dd5008e3834cb886121f085bd54438 [2020-11-28 02:58:16,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:16,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:58:16,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:16,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:16,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:16,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:16" (1/1) ... [2020-11-28 02:58:16,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d434a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:16, skipping insertion in model container [2020-11-28 02:58:16,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:16" (1/1) ... [2020-11-28 02:58:16,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:16,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:16,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:16,654 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:16,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:16,755 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:16,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:16 WrapperNode [2020-11-28 02:58:16,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:16,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:16,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:58:16,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:58:16,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:16" (1/1) ... [2020-11-28 02:58:16,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:16" (1/1) ... [2020-11-28 02:58:16,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:16,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:16,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:16,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:16,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:16" (1/1) ... [2020-11-28 02:58:16,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:16" (1/1) ... [2020-11-28 02:58:16,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:16" (1/1) ... [2020-11-28 02:58:16,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:16" (1/1) ... [2020-11-28 02:58:16,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:16" (1/1) ... [2020-11-28 02:58:16,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:16" (1/1) ... [2020-11-28 02:58:16,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:16" (1/1) ... [2020-11-28 02:58:16,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:16,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:16,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:16,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:16,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/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 02:58:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:58:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:18,072 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:18,074 INFO L298 CfgBuilder]: Removed 162 assume(true) statements. [2020-11-28 02:58:18,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:18 BoogieIcfgContainer [2020-11-28 02:58:18,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:18,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:18,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:18,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:18,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:16" (1/3) ... [2020-11-28 02:58:18,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7540fb0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:18, skipping insertion in model container [2020-11-28 02:58:18,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:16" (2/3) ... [2020-11-28 02:58:18,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7540fb0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:18, skipping insertion in model container [2020-11-28 02:58:18,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:18" (3/3) ... [2020-11-28 02:58:18,088 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2020-11-28 02:58:18,125 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:18,130 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 02:58:18,143 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 02:58:18,181 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:18,181 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:58:18,182 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:18,182 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:18,182 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:18,182 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:18,182 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:18,183 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:18,208 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-11-28 02:58:18,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:58:18,214 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:18,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:18,217 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:18,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:18,224 INFO L82 PathProgramCache]: Analyzing trace with hash -450260872, now seen corresponding path program 1 times [2020-11-28 02:58:18,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:18,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175149163] [2020-11-28 02:58:18,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:18,559 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 02:58:18,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175149163] [2020-11-28 02:58:18,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:18,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:58:18,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187021317] [2020-11-28 02:58:18,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:58:18,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:18,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:58:18,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:18,585 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 2 states. [2020-11-28 02:58:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:18,642 INFO L93 Difference]: Finished difference Result 219 states and 332 transitions. [2020-11-28 02:58:18,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:58:18,644 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-28 02:58:18,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:18,660 INFO L225 Difference]: With dead ends: 219 [2020-11-28 02:58:18,660 INFO L226 Difference]: Without dead ends: 107 [2020-11-28 02:58:18,668 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 02:58:18,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-28 02:58:18,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-11-28 02:58:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-28 02:58:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2020-11-28 02:58:18,736 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 16 [2020-11-28 02:58:18,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:18,737 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2020-11-28 02:58:18,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:58:18,738 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2020-11-28 02:58:18,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:58:18,742 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:18,744 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 02:58:18,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:58:18,745 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:18,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:18,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1497017769, now seen corresponding path program 1 times [2020-11-28 02:58:18,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:18,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449224740] [2020-11-28 02:58:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:18,882 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 02:58:18,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449224740] [2020-11-28 02:58:18,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:18,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:58:18,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957405836] [2020-11-28 02:58:18,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:58:18,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:18,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:58:18,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:58:18,889 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand 3 states. [2020-11-28 02:58:18,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:18,903 INFO L93 Difference]: Finished difference Result 107 states and 156 transitions. [2020-11-28 02:58:18,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:58:18,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 02:58:18,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:18,909 INFO L225 Difference]: With dead ends: 107 [2020-11-28 02:58:18,909 INFO L226 Difference]: Without dead ends: 45 [2020-11-28 02:58:18,910 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 02:58:18,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-28 02:58:18,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-28 02:58:18,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 02:58:18,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2020-11-28 02:58:18,915 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 17 [2020-11-28 02:58:18,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:18,915 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2020-11-28 02:58:18,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:58:18,915 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2020-11-28 02:58:18,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:58:18,918 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:18,919 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 02:58:18,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:58:18,920 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:18,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:18,921 INFO L82 PathProgramCache]: Analyzing trace with hash -720159228, now seen corresponding path program 1 times [2020-11-28 02:58:18,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:18,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185572860] [2020-11-28 02:58:18,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:19,020 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 02:58:19,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185572860] [2020-11-28 02:58:19,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:19,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:58:19,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153746026] [2020-11-28 02:58:19,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:58:19,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:19,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:58:19,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:19,022 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand 6 states. [2020-11-28 02:58:19,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:19,185 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2020-11-28 02:58:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:58:19,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-28 02:58:19,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:19,187 INFO L225 Difference]: With dead ends: 84 [2020-11-28 02:58:19,187 INFO L226 Difference]: Without dead ends: 45 [2020-11-28 02:58:19,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:58:19,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-11-28 02:58:19,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-11-28 02:58:19,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 02:58:19,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2020-11-28 02:58:19,199 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 22 [2020-11-28 02:58:19,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:19,199 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2020-11-28 02:58:19,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:58:19,200 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2020-11-28 02:58:19,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 02:58:19,201 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:19,202 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] [2020-11-28 02:58:19,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:58:19,203 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:19,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:19,204 INFO L82 PathProgramCache]: Analyzing trace with hash 2091202829, now seen corresponding path program 1 times [2020-11-28 02:58:19,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:19,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991474098] [2020-11-28 02:58:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:19,308 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 02:58:19,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991474098] [2020-11-28 02:58:19,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:19,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:58:19,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268151862] [2020-11-28 02:58:19,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:58:19,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:19,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:58:19,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:58:19,310 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand 3 states. [2020-11-28 02:58:19,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:19,358 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2020-11-28 02:58:19,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:58:19,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-28 02:58:19,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:19,360 INFO L225 Difference]: With dead ends: 105 [2020-11-28 02:58:19,360 INFO L226 Difference]: Without dead ends: 66 [2020-11-28 02:58:19,361 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 02:58:19,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-28 02:58:19,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-11-28 02:58:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-28 02:58:19,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2020-11-28 02:58:19,371 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 24 [2020-11-28 02:58:19,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:19,371 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2020-11-28 02:58:19,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:58:19,371 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2020-11-28 02:58:19,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 02:58:19,372 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:19,372 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] [2020-11-28 02:58:19,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:58:19,373 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:19,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:19,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1013899842, now seen corresponding path program 1 times [2020-11-28 02:58:19,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:19,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858237038] [2020-11-28 02:58:19,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:19,494 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 02:58:19,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858237038] [2020-11-28 02:58:19,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:19,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:58:19,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779451138] [2020-11-28 02:58:19,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:19,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:19,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:19,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:19,496 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand 5 states. [2020-11-28 02:58:19,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:19,596 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2020-11-28 02:58:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:58:19,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-28 02:58:19,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:19,598 INFO L225 Difference]: With dead ends: 171 [2020-11-28 02:58:19,598 INFO L226 Difference]: Without dead ends: 113 [2020-11-28 02:58:19,599 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 02:58:19,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-28 02:58:19,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2020-11-28 02:58:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-28 02:58:19,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2020-11-28 02:58:19,608 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 30 [2020-11-28 02:58:19,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:19,608 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2020-11-28 02:58:19,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:19,609 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2020-11-28 02:58:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 02:58:19,610 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:19,610 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] [2020-11-28 02:58:19,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:58:19,611 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:19,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:19,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1648611201, now seen corresponding path program 1 times [2020-11-28 02:58:19,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:19,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329959639] [2020-11-28 02:58:19,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:19,683 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 02:58:19,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329959639] [2020-11-28 02:58:19,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:19,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:19,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864734119] [2020-11-28 02:58:19,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:19,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:19,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:19,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:19,686 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 5 states. [2020-11-28 02:58:19,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:19,813 INFO L93 Difference]: Finished difference Result 344 states and 483 transitions. [2020-11-28 02:58:19,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:58:19,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-28 02:58:19,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:19,817 INFO L225 Difference]: With dead ends: 344 [2020-11-28 02:58:19,817 INFO L226 Difference]: Without dead ends: 280 [2020-11-28 02:58:19,818 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 02:58:19,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-11-28 02:58:19,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 128. [2020-11-28 02:58:19,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-28 02:58:19,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 175 transitions. [2020-11-28 02:58:19,852 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 175 transitions. Word has length 30 [2020-11-28 02:58:19,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:19,855 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 175 transitions. [2020-11-28 02:58:19,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:19,856 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 175 transitions. [2020-11-28 02:58:19,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 02:58:19,857 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:19,857 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] [2020-11-28 02:58:19,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:58:19,858 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:19,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:19,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1974587593, now seen corresponding path program 1 times [2020-11-28 02:58:19,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:19,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419192485] [2020-11-28 02:58:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:19,916 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 02:58:19,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419192485] [2020-11-28 02:58:19,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:19,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:19,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186488836] [2020-11-28 02:58:19,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:58:19,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:19,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:58:19,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:58:19,919 INFO L87 Difference]: Start difference. First operand 128 states and 175 transitions. Second operand 5 states. [2020-11-28 02:58:20,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:20,048 INFO L93 Difference]: Finished difference Result 366 states and 502 transitions. [2020-11-28 02:58:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:58:20,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-28 02:58:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:20,051 INFO L225 Difference]: With dead ends: 366 [2020-11-28 02:58:20,051 INFO L226 Difference]: Without dead ends: 364 [2020-11-28 02:58:20,052 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 02:58:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-11-28 02:58:20,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 128. [2020-11-28 02:58:20,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-28 02:58:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 174 transitions. [2020-11-28 02:58:20,067 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 174 transitions. Word has length 31 [2020-11-28 02:58:20,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:20,068 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 174 transitions. [2020-11-28 02:58:20,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:58:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 174 transitions. [2020-11-28 02:58:20,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 02:58:20,069 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:20,069 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] [2020-11-28 02:58:20,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:58:20,069 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:20,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:20,070 INFO L82 PathProgramCache]: Analyzing trace with hash -735158350, now seen corresponding path program 1 times [2020-11-28 02:58:20,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:20,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066425371] [2020-11-28 02:58:20,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:20,145 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 02:58:20,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066425371] [2020-11-28 02:58:20,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:20,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:58:20,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330508641] [2020-11-28 02:58:20,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:58:20,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:20,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:58:20,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:58:20,147 INFO L87 Difference]: Start difference. First operand 128 states and 174 transitions. Second operand 6 states. [2020-11-28 02:58:20,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:20,252 INFO L93 Difference]: Finished difference Result 346 states and 466 transitions. [2020-11-28 02:58:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:58:20,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-11-28 02:58:20,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:20,255 INFO L225 Difference]: With dead ends: 346 [2020-11-28 02:58:20,255 INFO L226 Difference]: Without dead ends: 224 [2020-11-28 02:58:20,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:20,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-28 02:58:20,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 136. [2020-11-28 02:58:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-28 02:58:20,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 182 transitions. [2020-11-28 02:58:20,271 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 182 transitions. Word has length 31 [2020-11-28 02:58:20,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:20,272 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 182 transitions. [2020-11-28 02:58:20,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:58:20,272 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 182 transitions. [2020-11-28 02:58:20,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 02:58:20,273 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:20,273 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] [2020-11-28 02:58:20,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:58:20,273 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:20,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:20,274 INFO L82 PathProgramCache]: Analyzing trace with hash -476992912, now seen corresponding path program 1 times [2020-11-28 02:58:20,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:20,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234827484] [2020-11-28 02:58:20,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:20,313 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 02:58:20,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234827484] [2020-11-28 02:58:20,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:20,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:58:20,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834639762] [2020-11-28 02:58:20,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:58:20,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:20,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:58:20,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:58:20,316 INFO L87 Difference]: Start difference. First operand 136 states and 182 transitions. Second operand 3 states. [2020-11-28 02:58:20,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:20,350 INFO L93 Difference]: Finished difference Result 316 states and 422 transitions. [2020-11-28 02:58:20,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:58:20,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-11-28 02:58:20,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:20,352 INFO L225 Difference]: With dead ends: 316 [2020-11-28 02:58:20,352 INFO L226 Difference]: Without dead ends: 186 [2020-11-28 02:58:20,353 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 02:58:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-11-28 02:58:20,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-11-28 02:58:20,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-11-28 02:58:20,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 242 transitions. [2020-11-28 02:58:20,373 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 242 transitions. Word has length 31 [2020-11-28 02:58:20,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:20,373 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 242 transitions. [2020-11-28 02:58:20,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:58:20,373 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 242 transitions. [2020-11-28 02:58:20,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 02:58:20,374 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:20,374 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] [2020-11-28 02:58:20,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:58:20,375 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:20,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:20,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1705214514, now seen corresponding path program 1 times [2020-11-28 02:58:20,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:20,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834244969] [2020-11-28 02:58:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:20,454 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:20,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:20,557 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:20,557 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:58:20,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:58:20,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:20 BoogieIcfgContainer [2020-11-28 02:58:20,677 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:20,678 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:20,678 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:20,679 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:20,679 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:18" (3/4) ... [2020-11-28 02:58:20,687 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 02:58:20,795 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d2dbecc8-ea9c-4672-9da0-8c3e249cb0e0/bin/uautomizer/witness.graphml [2020-11-28 02:58:20,795 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:20,797 INFO L168 Benchmark]: Toolchain (without parser) took 4561.50 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 64.0 MB in the beginning and 51.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:20,797 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 35.8 MB in the beginning and 35.7 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:20,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.23 ms. Allocated memory is still 94.4 MB. Free memory was 63.8 MB in the beginning and 62.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:20,798 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.84 ms. Allocated memory is still 94.4 MB. Free memory was 62.0 MB in the beginning and 58.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:20,799 INFO L168 Benchmark]: Boogie Preprocessor took 45.02 ms. Allocated memory is still 94.4 MB. Free memory was 58.3 MB in the beginning and 55.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:20,799 INFO L168 Benchmark]: RCFGBuilder took 1211.62 ms. Allocated memory is still 94.4 MB. Free memory was 55.7 MB in the beginning and 37.3 MB in the end (delta: 18.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:20,799 INFO L168 Benchmark]: TraceAbstraction took 2597.94 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 37.3 MB in the beginning and 65.3 MB in the end (delta: -28.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:20,800 INFO L168 Benchmark]: Witness Printer took 116.65 ms. Allocated memory is still 119.5 MB. Free memory was 65.3 MB in the beginning and 51.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:20,802 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 35.8 MB in the beginning and 35.7 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 519.23 ms. Allocated memory is still 94.4 MB. Free memory was 63.8 MB in the beginning and 62.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.84 ms. Allocated memory is still 94.4 MB. Free memory was 62.0 MB in the beginning and 58.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.02 ms. Allocated memory is still 94.4 MB. Free memory was 58.3 MB in the beginning and 55.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1211.62 ms. Allocated memory is still 94.4 MB. Free memory was 55.7 MB in the beginning and 37.3 MB in the end (delta: 18.4 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2597.94 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 37.3 MB in the beginning and 65.3 MB in the end (delta: -28.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 116.65 ms. Allocated memory is still 119.5 MB. Free memory was 65.3 MB in the beginning and 51.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 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: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L408] int cleanupTimeShifts = 4; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L489] int retValue_acc ; [L490] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L576] int retValue_acc ; [L579] retValue_acc = 1 [L580] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L496] tmp = valid_product() [L498] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L769] int splverifierCounter ; [L770] int tmp ; [L771] int tmp___0 ; [L772] int tmp___1 ; [L773] int tmp___2 ; [L776] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L778] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L780] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L786] tmp = __VERIFIER_nondet_int() [L788] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L796] tmp___0 = __VERIFIER_nondet_int() [L798] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L864] COND FALSE !(\read(methaneLevelCritical)) [L867] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L806] tmp___2 = __VERIFIER_nondet_int() [L808] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L597] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L604] COND TRUE \read(systemActive) [L652] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L655] COND FALSE !(\read(pumpRunning)) [L626] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L629] COND TRUE ! pumpRunning [L749] int retValue_acc ; [L750] int tmp ; [L751] int tmp___0 ; [L914] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L917] COND FALSE !(waterLevel < 2) [L921] retValue_acc = 0 [L922] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L755] tmp = isHighWaterSensorDry() [L757] COND FALSE !(\read(tmp)) [L760] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L762] retValue_acc = tmp___0 [L763] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L631] tmp = isHighWaterLevel() [L633] COND TRUE \read(tmp) [L680] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L516] int tmp ; [L517] int tmp___0 ; [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L521] tmp = isMethaneLevelCritical() [L523] COND TRUE \read(tmp) [L704] int retValue_acc ; [L707] retValue_acc = pumpRunning [L708] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L525] tmp___0 = isPumpRunning() [L527] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L3] __assert_fail("0", "minepump_spec1_product37.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 114 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 783 SDtfs, 1159 SDslu, 984 SDs, 0 SdLazy, 156 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 521 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 12402 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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...