./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product36.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_6a499a60-3941-4518-bc41-f43df54cebfb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6a499a60-3941-4518-bc41-f43df54cebfb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6a499a60-3941-4518-bc41-f43df54cebfb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6a499a60-3941-4518-bc41-f43df54cebfb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6a499a60-3941-4518-bc41-f43df54cebfb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6a499a60-3941-4518-bc41-f43df54cebfb/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 0d9fe46be856096e0c78b096b76405a575c1ad90 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-30 00:14:53,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:14:53,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:14:53,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:14:53,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:14:53,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:14:53,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:14:53,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:14:53,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:14:53,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:14:53,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:14:53,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:14:53,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:14:53,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:14:53,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:14:53,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:14:53,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:14:53,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:14:53,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:14:53,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:14:53,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:14:53,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:14:53,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:14:53,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:14:53,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:14:53,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:14:53,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:14:53,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:14:53,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:14:53,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:14:53,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:14:53,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:14:53,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:14:53,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:14:53,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:14:53,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:14:53,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:14:53,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:14:53,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:14:53,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:14:53,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:14:53,931 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6a499a60-3941-4518-bc41-f43df54cebfb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:14:53,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:14:53,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:14:53,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:14:53,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:14:53,954 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:14:53,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:14:53,954 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:14:53,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:14:53,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:14:53,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:14:53,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:14:53,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:14:53,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:14:53,956 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:14:53,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:14:53,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:14:53,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:14:53,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:14:53,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:14:53,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:14:53,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:14:53,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:53,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:14:53,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:14:53,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:14:53,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:14:53,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:14:53,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:14:53,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:14:53,960 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_6a499a60-3941-4518-bc41-f43df54cebfb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6a499a60-3941-4518-bc41-f43df54cebfb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d9fe46be856096e0c78b096b76405a575c1ad90 [2020-11-30 00:14:54,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:14:54,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:14:54,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:14:54,258 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:14:54,259 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:14:54,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6a499a60-3941-4518-bc41-f43df54cebfb/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c [2020-11-30 00:14:54,349 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6a499a60-3941-4518-bc41-f43df54cebfb/bin/uautomizer/data/3ef31f7d0/c48934d87d56478d9c7f4b9a4df38fd6/FLAGbead56885 [2020-11-30 00:14:54,906 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:14:54,906 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6a499a60-3941-4518-bc41-f43df54cebfb/sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c [2020-11-30 00:14:54,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6a499a60-3941-4518-bc41-f43df54cebfb/bin/uautomizer/data/3ef31f7d0/c48934d87d56478d9c7f4b9a4df38fd6/FLAGbead56885 [2020-11-30 00:14:55,315 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6a499a60-3941-4518-bc41-f43df54cebfb/bin/uautomizer/data/3ef31f7d0/c48934d87d56478d9c7f4b9a4df38fd6 [2020-11-30 00:14:55,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:14:55,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:14:55,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:55,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:14:55,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:14:55,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:55" (1/1) ... [2020-11-30 00:14:55,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b34a30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:55, skipping insertion in model container [2020-11-30 00:14:55,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:55" (1/1) ... [2020-11-30 00:14:55,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:14:55,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:14:55,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:55,801 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:14:55,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:55,920 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:14:55,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:55 WrapperNode [2020-11-30 00:14:55,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:55,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:55,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:14:55,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:14:55,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:55" (1/1) ... [2020-11-30 00:14:55,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:55" (1/1) ... [2020-11-30 00:14:56,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:56,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:14:56,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:14:56,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:14:56,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:55" (1/1) ... [2020-11-30 00:14:56,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:55" (1/1) ... [2020-11-30 00:14:56,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:55" (1/1) ... [2020-11-30 00:14:56,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:55" (1/1) ... [2020-11-30 00:14:56,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:55" (1/1) ... [2020-11-30 00:14:56,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:55" (1/1) ... [2020-11-30 00:14:56,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:55" (1/1) ... [2020-11-30 00:14:56,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:14:56,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:14:56,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:14:56,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:14:56,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a499a60-3941-4518-bc41-f43df54cebfb/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 [2020-11-30 00:14:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:14:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:14:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:14:56,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:14:57,189 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:14:57,191 INFO L298 CfgBuilder]: Removed 108 assume(true) statements. [2020-11-30 00:14:57,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:57 BoogieIcfgContainer [2020-11-30 00:14:57,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:14:57,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:14:57,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:14:57,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:14:57,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:14:55" (1/3) ... [2020-11-30 00:14:57,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b0495b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:57, skipping insertion in model container [2020-11-30 00:14:57,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:55" (2/3) ... [2020-11-30 00:14:57,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b0495b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:57, skipping insertion in model container [2020-11-30 00:14:57,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:57" (3/3) ... [2020-11-30 00:14:57,205 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2020-11-30 00:14:57,221 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:14:57,226 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-30 00:14:57,239 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-30 00:14:57,278 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:14:57,278 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:14:57,279 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:14:57,280 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:14:57,280 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:14:57,280 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:14:57,280 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:14:57,280 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:14:57,304 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-11-30 00:14:57,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:14:57,311 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:57,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:57,314 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:57,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:57,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1202040542, now seen corresponding path program 1 times [2020-11-30 00:14:57,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:57,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854139811] [2020-11-30 00:14:57,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:57,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854139811] [2020-11-30 00:14:57,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:57,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:14:57,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119936877] [2020-11-30 00:14:57,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:14:57,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:57,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:14:57,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:14:57,699 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 2 states. [2020-11-30 00:14:57,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:57,727 INFO L93 Difference]: Finished difference Result 157 states and 236 transitions. [2020-11-30 00:14:57,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:14:57,728 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-30 00:14:57,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:57,740 INFO L225 Difference]: With dead ends: 157 [2020-11-30 00:14:57,740 INFO L226 Difference]: Without dead ends: 76 [2020-11-30 00:14:57,744 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 [2020-11-30 00:14:57,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-30 00:14:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-11-30 00:14:57,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-30 00:14:57,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2020-11-30 00:14:57,787 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 16 [2020-11-30 00:14:57,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:57,788 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2020-11-30 00:14:57,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:14:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2020-11-30 00:14:57,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:14:57,789 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:57,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:57,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:14:57,790 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:57,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:57,791 INFO L82 PathProgramCache]: Analyzing trace with hash 155283645, now seen corresponding path program 1 times [2020-11-30 00:14:57,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:57,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052671166] [2020-11-30 00:14:57,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:57,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:57,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052671166] [2020-11-30 00:14:57,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:57,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:14:57,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545684981] [2020-11-30 00:14:57,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:14:57,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:57,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:14:57,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:57,941 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand 3 states. [2020-11-30 00:14:57,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:57,963 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2020-11-30 00:14:57,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:14:57,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-30 00:14:57,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:57,967 INFO L225 Difference]: With dead ends: 76 [2020-11-30 00:14:57,967 INFO L226 Difference]: Without dead ends: 36 [2020-11-30 00:14:57,969 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 [2020-11-30 00:14:57,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-30 00:14:57,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-30 00:14:57,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 00:14:57,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2020-11-30 00:14:57,984 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 17 [2020-11-30 00:14:57,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:57,984 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-11-30 00:14:57,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:14:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2020-11-30 00:14:57,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:14:57,988 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:57,989 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] [2020-11-30 00:14:57,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:14:57,990 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:57,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:57,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1499295122, now seen corresponding path program 1 times [2020-11-30 00:14:57,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:57,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203103739] [2020-11-30 00:14:57,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:58,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203103739] [2020-11-30 00:14:58,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:58,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:14:58,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943040281] [2020-11-30 00:14:58,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:14:58,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:58,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:14:58,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:14:58,154 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand 5 states. [2020-11-30 00:14:58,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:58,276 INFO L93 Difference]: Finished difference Result 89 states and 130 transitions. [2020-11-30 00:14:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:14:58,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-30 00:14:58,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:58,281 INFO L225 Difference]: With dead ends: 89 [2020-11-30 00:14:58,281 INFO L226 Difference]: Without dead ends: 59 [2020-11-30 00:14:58,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:14:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-30 00:14:58,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2020-11-30 00:14:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-30 00:14:58,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2020-11-30 00:14:58,307 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 22 [2020-11-30 00:14:58,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:58,307 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2020-11-30 00:14:58,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:14:58,308 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2020-11-30 00:14:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 00:14:58,309 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:58,309 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] [2020-11-30 00:14:58,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:14:58,310 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:58,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:58,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1870150441, now seen corresponding path program 1 times [2020-11-30 00:14:58,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:58,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702317326] [2020-11-30 00:14:58,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:58,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702317326] [2020-11-30 00:14:58,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:58,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:14:58,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267789048] [2020-11-30 00:14:58,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:14:58,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:58,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:14:58,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:58,431 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand 3 states. [2020-11-30 00:14:58,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:58,498 INFO L93 Difference]: Finished difference Result 125 states and 184 transitions. [2020-11-30 00:14:58,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:14:58,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-30 00:14:58,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:58,500 INFO L225 Difference]: With dead ends: 125 [2020-11-30 00:14:58,500 INFO L226 Difference]: Without dead ends: 76 [2020-11-30 00:14:58,501 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 [2020-11-30 00:14:58,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-30 00:14:58,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-11-30 00:14:58,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 00:14:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2020-11-30 00:14:58,514 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 23 [2020-11-30 00:14:58,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:58,514 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-11-30 00:14:58,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:14:58,514 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2020-11-30 00:14:58,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 00:14:58,516 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:58,516 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] [2020-11-30 00:14:58,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:14:58,516 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:58,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:58,517 INFO L82 PathProgramCache]: Analyzing trace with hash 944519591, now seen corresponding path program 1 times [2020-11-30 00:14:58,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:58,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506650847] [2020-11-30 00:14:58,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:58,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506650847] [2020-11-30 00:14:58,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:58,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:14:58,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677866249] [2020-11-30 00:14:58,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:14:58,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:58,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:14:58,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:14:58,646 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 5 states. [2020-11-30 00:14:58,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:58,809 INFO L93 Difference]: Finished difference Result 354 states and 517 transitions. [2020-11-30 00:14:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:14:58,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-30 00:14:58,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:58,818 INFO L225 Difference]: With dead ends: 354 [2020-11-30 00:14:58,818 INFO L226 Difference]: Without dead ends: 286 [2020-11-30 00:14:58,820 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 [2020-11-30 00:14:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-11-30 00:14:58,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 134. [2020-11-30 00:14:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-30 00:14:58,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 188 transitions. [2020-11-30 00:14:58,853 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 188 transitions. Word has length 25 [2020-11-30 00:14:58,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:58,853 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 188 transitions. [2020-11-30 00:14:58,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:14:58,854 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 188 transitions. [2020-11-30 00:14:58,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 00:14:58,855 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:58,855 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] [2020-11-30 00:14:58,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:14:58,856 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:58,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:58,857 INFO L82 PathProgramCache]: Analyzing trace with hash 740712497, now seen corresponding path program 1 times [2020-11-30 00:14:58,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:58,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417160945] [2020-11-30 00:14:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:58,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417160945] [2020-11-30 00:14:58,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:58,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:14:58,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759541130] [2020-11-30 00:14:58,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:14:58,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:58,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:14:58,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:14:58,979 INFO L87 Difference]: Start difference. First operand 134 states and 188 transitions. Second operand 5 states. [2020-11-30 00:14:59,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:59,147 INFO L93 Difference]: Finished difference Result 368 states and 521 transitions. [2020-11-30 00:14:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:14:59,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-30 00:14:59,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:59,150 INFO L225 Difference]: With dead ends: 368 [2020-11-30 00:14:59,150 INFO L226 Difference]: Without dead ends: 366 [2020-11-30 00:14:59,151 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 [2020-11-30 00:14:59,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-11-30 00:14:59,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 134. [2020-11-30 00:14:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-30 00:14:59,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 186 transitions. [2020-11-30 00:14:59,191 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 186 transitions. Word has length 26 [2020-11-30 00:14:59,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:59,192 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 186 transitions. [2020-11-30 00:14:59,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:14:59,192 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 186 transitions. [2020-11-30 00:14:59,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 00:14:59,194 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:59,194 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] [2020-11-30 00:14:59,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:14:59,194 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:59,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:59,195 INFO L82 PathProgramCache]: Analyzing trace with hash 2030628178, now seen corresponding path program 1 times [2020-11-30 00:14:59,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:59,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012549706] [2020-11-30 00:14:59,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:59,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012549706] [2020-11-30 00:14:59,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:59,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:14:59,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210607714] [2020-11-30 00:14:59,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:14:59,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:59,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:14:59,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:14:59,300 INFO L87 Difference]: Start difference. First operand 134 states and 186 transitions. Second operand 5 states. [2020-11-30 00:14:59,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:59,377 INFO L93 Difference]: Finished difference Result 398 states and 551 transitions. [2020-11-30 00:14:59,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:14:59,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-30 00:14:59,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:59,381 INFO L225 Difference]: With dead ends: 398 [2020-11-30 00:14:59,381 INFO L226 Difference]: Without dead ends: 270 [2020-11-30 00:14:59,386 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 [2020-11-30 00:14:59,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-11-30 00:14:59,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 140. [2020-11-30 00:14:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-30 00:14:59,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 192 transitions. [2020-11-30 00:14:59,410 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 192 transitions. Word has length 30 [2020-11-30 00:14:59,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:59,412 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 192 transitions. [2020-11-30 00:14:59,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:14:59,412 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 192 transitions. [2020-11-30 00:14:59,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 00:14:59,418 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:59,418 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] [2020-11-30 00:14:59,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:14:59,419 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:59,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:59,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1637601168, now seen corresponding path program 1 times [2020-11-30 00:14:59,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:59,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448658909] [2020-11-30 00:14:59,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:59,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448658909] [2020-11-30 00:14:59,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:59,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:14:59,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819636787] [2020-11-30 00:14:59,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:14:59,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:59,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:14:59,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:14:59,496 INFO L87 Difference]: Start difference. First operand 140 states and 192 transitions. Second operand 4 states. [2020-11-30 00:14:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:59,553 INFO L93 Difference]: Finished difference Result 358 states and 490 transitions. [2020-11-30 00:14:59,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:14:59,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-30 00:14:59,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:59,556 INFO L225 Difference]: With dead ends: 358 [2020-11-30 00:14:59,556 INFO L226 Difference]: Without dead ends: 224 [2020-11-30 00:14:59,558 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 [2020-11-30 00:14:59,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-30 00:14:59,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 144. [2020-11-30 00:14:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-30 00:14:59,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 196 transitions. [2020-11-30 00:14:59,579 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 196 transitions. Word has length 30 [2020-11-30 00:14:59,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:59,580 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 196 transitions. [2020-11-30 00:14:59,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:14:59,580 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 196 transitions. [2020-11-30 00:14:59,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 00:14:59,586 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:59,586 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] [2020-11-30 00:14:59,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:14:59,587 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:59,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:59,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1895766606, now seen corresponding path program 1 times [2020-11-30 00:14:59,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:59,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312159787] [2020-11-30 00:14:59,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:59,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:59,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312159787] [2020-11-30 00:14:59,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:59,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:14:59,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307069104] [2020-11-30 00:14:59,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:14:59,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:59,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:14:59,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:14:59,647 INFO L87 Difference]: Start difference. First operand 144 states and 196 transitions. Second operand 3 states. [2020-11-30 00:14:59,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:59,689 INFO L93 Difference]: Finished difference Result 368 states and 500 transitions. [2020-11-30 00:14:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:14:59,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-11-30 00:14:59,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:59,691 INFO L225 Difference]: With dead ends: 368 [2020-11-30 00:14:59,691 INFO L226 Difference]: Without dead ends: 230 [2020-11-30 00:14:59,692 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 [2020-11-30 00:14:59,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-11-30 00:14:59,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-11-30 00:14:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-30 00:14:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 304 transitions. [2020-11-30 00:14:59,723 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 304 transitions. Word has length 30 [2020-11-30 00:14:59,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:59,724 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 304 transitions. [2020-11-30 00:14:59,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:14:59,724 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 304 transitions. [2020-11-30 00:14:59,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 00:14:59,725 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:59,725 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] [2020-11-30 00:14:59,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 00:14:59,726 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:59,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:59,726 INFO L82 PathProgramCache]: Analyzing trace with hash -112049588, now seen corresponding path program 1 times [2020-11-30 00:14:59,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:59,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106684775] [2020-11-30 00:14:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:59,812 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:59,885 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:59,941 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:14:59,941 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:14:59,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 00:15:00,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:15:00 BoogieIcfgContainer [2020-11-30 00:15:00,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:15:00,083 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:15:00,083 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:15:00,083 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:15:00,084 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:57" (3/4) ... [2020-11-30 00:15:00,086 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:15:00,186 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6a499a60-3941-4518-bc41-f43df54cebfb/bin/uautomizer/witness.graphml [2020-11-30 00:15:00,186 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:15:00,188 INFO L168 Benchmark]: Toolchain (without parser) took 4866.87 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 65.2 MB in the beginning and 78.9 MB in the end (delta: -13.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:00,188 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 50.9 MB in the beginning and 50.9 MB in the end (delta: 29.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:15:00,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 593.36 ms. Allocated memory is still 96.5 MB. Free memory was 64.8 MB in the beginning and 63.9 MB in the end (delta: 874.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:00,189 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.93 ms. Allocated memory is still 96.5 MB. Free memory was 63.9 MB in the beginning and 61.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:00,190 INFO L168 Benchmark]: Boogie Preprocessor took 57.59 ms. Allocated memory is still 96.5 MB. Free memory was 61.2 MB in the beginning and 58.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:00,190 INFO L168 Benchmark]: RCFGBuilder took 1122.73 ms. Allocated memory is still 96.5 MB. Free memory was 58.7 MB in the beginning and 46.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:00,191 INFO L168 Benchmark]: TraceAbstraction took 2886.09 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 45.5 MB in the beginning and 92.6 MB in the end (delta: -47.1 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:00,196 INFO L168 Benchmark]: Witness Printer took 103.39 ms. Allocated memory is still 119.5 MB. Free memory was 92.6 MB in the beginning and 80.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:15:00,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 79.7 MB. Free memory was 50.9 MB in the beginning and 50.9 MB in the end (delta: 29.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 593.36 ms. Allocated memory is still 96.5 MB. Free memory was 64.8 MB in the beginning and 63.9 MB in the end (delta: 874.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.93 ms. Allocated memory is still 96.5 MB. Free memory was 63.9 MB in the beginning and 61.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.59 ms. Allocated memory is still 96.5 MB. Free memory was 61.2 MB in the beginning and 58.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1122.73 ms. Allocated memory is still 96.5 MB. Free memory was 58.7 MB in the beginning and 46.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2886.09 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 45.5 MB in the beginning and 92.6 MB in the end (delta: -47.1 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. * Witness Printer took 103.39 ms. Allocated memory is still 119.5 MB. Free memory was 92.6 MB in the beginning and 80.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 14.7 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: [L62] int pumpRunning = 0; [L63] int systemActive = 1; [L241] int waterLevel = 1; [L242] int methaneLevelCritical = 0; [L612] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L835] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L908] int retValue_acc ; [L909] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L434] int retValue_acc ; [L437] retValue_acc = 1 [L438] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L915] tmp = valid_product() [L917] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L337] int splverifierCounter ; [L338] int tmp ; [L339] int tmp___0 ; [L340] int tmp___1 ; [L341] int tmp___2 ; [L344] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L346] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L348] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L354] tmp = __VERIFIER_nondet_int() [L356] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L259] COND TRUE waterLevel < 2 [L260] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L364] tmp___0 = __VERIFIER_nondet_int() [L366] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L271] COND FALSE !(\read(methaneLevelCritical)) [L274] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L374] tmp___2 = __VERIFIER_nondet_int() [L376] COND TRUE \read(tmp___2) [L233] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L70] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L77] COND TRUE \read(systemActive) [L99] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L102] COND TRUE ! pumpRunning [L196] int retValue_acc ; [L197] int tmp ; [L198] int tmp___0 ; [L321] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L324] COND FALSE !(waterLevel < 2) [L328] retValue_acc = 0 [L329] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L202] tmp = isHighWaterSensorDry() [L204] COND FALSE !(\read(tmp)) [L207] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L209] retValue_acc = tmp___0 [L210] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L104] tmp = isHighWaterLevel() [L106] COND TRUE \read(tmp) [L127] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L810] int tmp ; [L811] int tmp___0 ; [L280] int retValue_acc ; [L283] retValue_acc = methaneLevelCritical [L284] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L815] tmp = isMethaneLevelCritical() [L817] COND TRUE \read(tmp) [L151] int retValue_acc ; [L154] retValue_acc = pumpRunning [L155] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L819] tmp___0 = isPumpRunning() [L821] 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_product36.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, 83 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 626 SDtfs, 870 SDslu, 848 SDs, 0 SdLazy, 109 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 600 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 9650 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...