./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.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_87e968da-2bab-42ee-816e-324e39cf17ee/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_87e968da-2bab-42ee-816e-324e39cf17ee/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_87e968da-2bab-42ee-816e-324e39cf17ee/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_87e968da-2bab-42ee-816e-324e39cf17ee/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_87e968da-2bab-42ee-816e-324e39cf17ee/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_87e968da-2bab-42ee-816e-324e39cf17ee/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 10c62355b958c28dceaa55313714ee80b90c1fad ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 [2020-11-29 19:46:31,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:46:31,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:46:31,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:46:31,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:46:31,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:46:31,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:46:31,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:46:31,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:46:31,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:46:31,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:46:31,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:46:31,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:46:31,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:46:31,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:46:31,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:46:31,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:46:31,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:46:31,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:46:31,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:46:31,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:46:31,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:46:31,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:46:31,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:46:31,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:46:31,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:46:31,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:46:31,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:46:31,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:46:31,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:46:31,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:46:31,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:46:31,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:46:31,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:46:31,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:46:31,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:46:31,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:46:31,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:46:31,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:46:31,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:46:31,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:46:31,962 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_87e968da-2bab-42ee-816e-324e39cf17ee/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:46:32,022 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:46:32,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:46:32,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:46:32,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:46:32,027 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:46:32,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:46:32,028 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:46:32,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:46:32,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:46:32,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:46:32,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:46:32,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:46:32,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:46:32,031 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:46:32,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:46:32,032 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:46:32,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:46:32,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:46:32,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:46:32,033 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:46:32,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:46:32,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:46:32,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:46:32,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:46:32,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:46:32,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:46:32,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:46:32,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:46:32,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:46:32,036 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_87e968da-2bab-42ee-816e-324e39cf17ee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_87e968da-2bab-42ee-816e-324e39cf17ee/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10c62355b958c28dceaa55313714ee80b90c1fad [2020-11-29 19:46:32,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:46:32,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:46:32,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:46:32,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:46:32,443 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:46:32,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_87e968da-2bab-42ee-816e-324e39cf17ee/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2020-11-29 19:46:32,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87e968da-2bab-42ee-816e-324e39cf17ee/bin/uautomizer/data/408d0a2c4/56e134875c0344118ff8e5ca68903212/FLAG9d710fd15 [2020-11-29 19:46:33,126 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:46:33,127 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_87e968da-2bab-42ee-816e-324e39cf17ee/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2020-11-29 19:46:33,149 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87e968da-2bab-42ee-816e-324e39cf17ee/bin/uautomizer/data/408d0a2c4/56e134875c0344118ff8e5ca68903212/FLAG9d710fd15 [2020-11-29 19:46:33,424 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_87e968da-2bab-42ee-816e-324e39cf17ee/bin/uautomizer/data/408d0a2c4/56e134875c0344118ff8e5ca68903212 [2020-11-29 19:46:33,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:46:33,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:46:33,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:46:33,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:46:33,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:46:33,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:46:33" (1/1) ... [2020-11-29 19:46:33,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f906917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:33, skipping insertion in model container [2020-11-29 19:46:33,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:46:33" (1/1) ... [2020-11-29 19:46:33,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:46:33,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:46:33,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:46:33,944 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:46:34,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:46:34,112 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:46:34,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:34 WrapperNode [2020-11-29 19:46:34,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:46:34,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:46:34,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:46:34,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:46:34,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:34" (1/1) ... [2020-11-29 19:46:34,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:34" (1/1) ... [2020-11-29 19:46:34,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:46:34,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:46:34,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:46:34,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:46:34,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:34" (1/1) ... [2020-11-29 19:46:34,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:34" (1/1) ... [2020-11-29 19:46:34,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:34" (1/1) ... [2020-11-29 19:46:34,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:34" (1/1) ... [2020-11-29 19:46:34,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:34" (1/1) ... [2020-11-29 19:46:34,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:34" (1/1) ... [2020-11-29 19:46:34,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:34" (1/1) ... [2020-11-29 19:46:34,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:46:34,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:46:34,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:46:34,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:46:34,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87e968da-2bab-42ee-816e-324e39cf17ee/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 [2020-11-29 19:46:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:46:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:46:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:46:34,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:46:35,911 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:46:35,912 INFO L298 CfgBuilder]: Removed 168 assume(true) statements. [2020-11-29 19:46:35,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:46:35 BoogieIcfgContainer [2020-11-29 19:46:35,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:46:35,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:46:35,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:46:35,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:46:35,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:46:33" (1/3) ... [2020-11-29 19:46:35,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1d0c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:46:35, skipping insertion in model container [2020-11-29 19:46:35,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:46:34" (2/3) ... [2020-11-29 19:46:35,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1d0c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:46:35, skipping insertion in model container [2020-11-29 19:46:35,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:46:35" (3/3) ... [2020-11-29 19:46:35,925 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2020-11-29 19:46:35,939 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:46:35,945 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-29 19:46:35,960 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 19:46:35,992 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:46:35,992 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:46:35,992 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:46:35,993 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:46:35,993 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:46:35,993 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:46:35,993 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:46:35,993 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:46:36,042 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-11-29 19:46:36,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:46:36,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:46:36,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:46:36,051 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:46:36,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:36,059 INFO L82 PathProgramCache]: Analyzing trace with hash -515765374, now seen corresponding path program 1 times [2020-11-29 19:46:36,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:36,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362335188] [2020-11-29 19:46:36,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:46:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:46:36,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362335188] [2020-11-29 19:46:36,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:46:36,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:46:36,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256654757] [2020-11-29 19:46:36,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:46:36,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:46:36,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:46:36,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:46:36,435 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 2 states. [2020-11-29 19:46:36,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:46:36,475 INFO L93 Difference]: Finished difference Result 223 states and 338 transitions. [2020-11-29 19:46:36,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:46:36,477 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-29 19:46:36,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:46:36,492 INFO L225 Difference]: With dead ends: 223 [2020-11-29 19:46:36,492 INFO L226 Difference]: Without dead ends: 109 [2020-11-29 19:46:36,496 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 [2020-11-29 19:46:36,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-29 19:46:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-29 19:46:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-29 19:46:36,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-11-29 19:46:36,554 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2020-11-29 19:46:36,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:46:36,554 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-11-29 19:46:36,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:46:36,555 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-11-29 19:46:36,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 19:46:36,556 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:46:36,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:46:36,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:46:36,558 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:46:36,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:36,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1562522271, now seen corresponding path program 1 times [2020-11-29 19:46:36,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:36,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360871575] [2020-11-29 19:46:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:46:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:46:36,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360871575] [2020-11-29 19:46:36,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:46:36,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:46:36,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446873104] [2020-11-29 19:46:36,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:46:36,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:46:36,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:46:36,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:46:36,717 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2020-11-29 19:46:36,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:46:36,733 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2020-11-29 19:46:36,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:46:36,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-29 19:46:36,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:46:36,741 INFO L225 Difference]: With dead ends: 109 [2020-11-29 19:46:36,741 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 19:46:36,742 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 [2020-11-29 19:46:36,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 19:46:36,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-29 19:46:36,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 19:46:36,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-11-29 19:46:36,754 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-11-29 19:46:36,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:46:36,755 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-11-29 19:46:36,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:46:36,755 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-11-29 19:46:36,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 19:46:36,756 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:46:36,757 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] [2020-11-29 19:46:36,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:46:36,757 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:46:36,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:36,758 INFO L82 PathProgramCache]: Analyzing trace with hash 109011716, now seen corresponding path program 1 times [2020-11-29 19:46:36,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:36,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065263655] [2020-11-29 19:46:36,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:46:36,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:46:36,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065263655] [2020-11-29 19:46:36,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:46:36,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:46:36,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355162907] [2020-11-29 19:46:36,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:46:36,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:46:36,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:46:36,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:46:36,901 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 3 states. [2020-11-29 19:46:36,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:46:36,985 INFO L93 Difference]: Finished difference Result 129 states and 192 transitions. [2020-11-29 19:46:36,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:46:36,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-29 19:46:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:46:36,990 INFO L225 Difference]: With dead ends: 129 [2020-11-29 19:46:36,992 INFO L226 Difference]: Without dead ends: 88 [2020-11-29 19:46:36,994 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 [2020-11-29 19:46:36,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-29 19:46:37,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-11-29 19:46:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-29 19:46:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 125 transitions. [2020-11-29 19:46:37,019 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 125 transitions. Word has length 22 [2020-11-29 19:46:37,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:46:37,019 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 125 transitions. [2020-11-29 19:46:37,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:46:37,020 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 125 transitions. [2020-11-29 19:46:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 19:46:37,025 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:46:37,026 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] [2020-11-29 19:46:37,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:46:37,026 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:46:37,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:37,027 INFO L82 PathProgramCache]: Analyzing trace with hash 60563277, now seen corresponding path program 1 times [2020-11-29 19:46:37,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:37,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141693150] [2020-11-29 19:46:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:46:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:46:37,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141693150] [2020-11-29 19:46:37,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:46:37,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:46:37,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288779214] [2020-11-29 19:46:37,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:46:37,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:46:37,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:46:37,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:46:37,164 INFO L87 Difference]: Start difference. First operand 84 states and 125 transitions. Second operand 3 states. [2020-11-29 19:46:37,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:46:37,263 INFO L93 Difference]: Finished difference Result 203 states and 306 transitions. [2020-11-29 19:46:37,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:46:37,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-29 19:46:37,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:46:37,266 INFO L225 Difference]: With dead ends: 203 [2020-11-29 19:46:37,266 INFO L226 Difference]: Without dead ends: 125 [2020-11-29 19:46:37,267 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 [2020-11-29 19:46:37,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-29 19:46:37,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2020-11-29 19:46:37,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-29 19:46:37,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 179 transitions. [2020-11-29 19:46:37,286 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 179 transitions. Word has length 24 [2020-11-29 19:46:37,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:46:37,287 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 179 transitions. [2020-11-29 19:46:37,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:46:37,287 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 179 transitions. [2020-11-29 19:46:37,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 19:46:37,288 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:46:37,289 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] [2020-11-29 19:46:37,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:46:37,289 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:46:37,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:37,290 INFO L82 PathProgramCache]: Analyzing trace with hash -445763815, now seen corresponding path program 1 times [2020-11-29 19:46:37,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:37,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868047435] [2020-11-29 19:46:37,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:46:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:46:37,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868047435] [2020-11-29 19:46:37,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:46:37,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:46:37,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867968164] [2020-11-29 19:46:37,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:46:37,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:46:37,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:46:37,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:46:37,389 INFO L87 Difference]: Start difference. First operand 123 states and 179 transitions. Second operand 5 states. [2020-11-29 19:46:37,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:46:37,642 INFO L93 Difference]: Finished difference Result 439 states and 645 transitions. [2020-11-29 19:46:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:46:37,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-29 19:46:37,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:46:37,651 INFO L225 Difference]: With dead ends: 439 [2020-11-29 19:46:37,655 INFO L226 Difference]: Without dead ends: 322 [2020-11-29 19:46:37,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:46:37,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-11-29 19:46:37,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 206. [2020-11-29 19:46:37,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-11-29 19:46:37,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 290 transitions. [2020-11-29 19:46:37,729 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 290 transitions. Word has length 25 [2020-11-29 19:46:37,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:46:37,729 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 290 transitions. [2020-11-29 19:46:37,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:46:37,730 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 290 transitions. [2020-11-29 19:46:37,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 19:46:37,732 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:46:37,732 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] [2020-11-29 19:46:37,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 19:46:37,733 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:46:37,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:37,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1889894491, now seen corresponding path program 1 times [2020-11-29 19:46:37,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:37,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739987365] [2020-11-29 19:46:37,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:46:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:46:37,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739987365] [2020-11-29 19:46:37,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:46:37,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:46:37,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246226948] [2020-11-29 19:46:37,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:46:37,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:46:37,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:46:37,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:46:37,856 INFO L87 Difference]: Start difference. First operand 206 states and 290 transitions. Second operand 5 states. [2020-11-29 19:46:38,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:46:38,091 INFO L93 Difference]: Finished difference Result 438 states and 630 transitions. [2020-11-29 19:46:38,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:46:38,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-29 19:46:38,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:46:38,096 INFO L225 Difference]: With dead ends: 438 [2020-11-29 19:46:38,096 INFO L226 Difference]: Without dead ends: 436 [2020-11-29 19:46:38,097 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 [2020-11-29 19:46:38,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-11-29 19:46:38,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 206. [2020-11-29 19:46:38,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-11-29 19:46:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 288 transitions. [2020-11-29 19:46:38,125 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 288 transitions. Word has length 26 [2020-11-29 19:46:38,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:46:38,126 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 288 transitions. [2020-11-29 19:46:38,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:46:38,126 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 288 transitions. [2020-11-29 19:46:38,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 19:46:38,128 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:46:38,129 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] [2020-11-29 19:46:38,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 19:46:38,129 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:46:38,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:38,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1724354492, now seen corresponding path program 1 times [2020-11-29 19:46:38,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:38,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570326647] [2020-11-29 19:46:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:46:38,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:46:38,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570326647] [2020-11-29 19:46:38,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:46:38,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:46:38,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928934277] [2020-11-29 19:46:38,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:46:38,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:46:38,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:46:38,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:46:38,226 INFO L87 Difference]: Start difference. First operand 206 states and 288 transitions. Second operand 4 states. [2020-11-29 19:46:38,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:46:38,393 INFO L93 Difference]: Finished difference Result 426 states and 607 transitions. [2020-11-29 19:46:38,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:46:38,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-29 19:46:38,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:46:38,397 INFO L225 Difference]: With dead ends: 426 [2020-11-29 19:46:38,397 INFO L226 Difference]: Without dead ends: 309 [2020-11-29 19:46:38,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:46:38,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-11-29 19:46:38,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 305. [2020-11-29 19:46:38,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-11-29 19:46:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 425 transitions. [2020-11-29 19:46:38,438 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 425 transitions. Word has length 31 [2020-11-29 19:46:38,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:46:38,441 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 425 transitions. [2020-11-29 19:46:38,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:46:38,441 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 425 transitions. [2020-11-29 19:46:38,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 19:46:38,452 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:46:38,452 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] [2020-11-29 19:46:38,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 19:46:38,453 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:46:38,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:38,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1982519930, now seen corresponding path program 1 times [2020-11-29 19:46:38,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:38,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683025177] [2020-11-29 19:46:38,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:46:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:46:38,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683025177] [2020-11-29 19:46:38,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:46:38,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:46:38,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113284580] [2020-11-29 19:46:38,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:46:38,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:46:38,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:46:38,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:46:38,566 INFO L87 Difference]: Start difference. First operand 305 states and 425 transitions. Second operand 4 states. [2020-11-29 19:46:38,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:46:38,694 INFO L93 Difference]: Finished difference Result 894 states and 1264 transitions. [2020-11-29 19:46:38,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:46:38,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-29 19:46:38,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:46:38,700 INFO L225 Difference]: With dead ends: 894 [2020-11-29 19:46:38,700 INFO L226 Difference]: Without dead ends: 676 [2020-11-29 19:46:38,702 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 [2020-11-29 19:46:38,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-11-29 19:46:38,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 305. [2020-11-29 19:46:38,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-11-29 19:46:38,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 421 transitions. [2020-11-29 19:46:38,735 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 421 transitions. Word has length 31 [2020-11-29 19:46:38,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:46:38,736 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 421 transitions. [2020-11-29 19:46:38,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:46:38,736 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 421 transitions. [2020-11-29 19:46:38,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 19:46:38,737 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:46:38,737 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] [2020-11-29 19:46:38,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 19:46:38,738 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:46:38,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:38,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1589492920, now seen corresponding path program 1 times [2020-11-29 19:46:38,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:38,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92645442] [2020-11-29 19:46:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:46:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:46:38,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92645442] [2020-11-29 19:46:38,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:46:38,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:46:38,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020458869] [2020-11-29 19:46:38,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:46:38,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:46:38,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:46:38,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:46:38,822 INFO L87 Difference]: Start difference. First operand 305 states and 421 transitions. Second operand 5 states. [2020-11-29 19:46:39,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:46:39,148 INFO L93 Difference]: Finished difference Result 673 states and 940 transitions. [2020-11-29 19:46:39,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:46:39,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-29 19:46:39,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:46:39,153 INFO L225 Difference]: With dead ends: 673 [2020-11-29 19:46:39,153 INFO L226 Difference]: Without dead ends: 455 [2020-11-29 19:46:39,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:46:39,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-11-29 19:46:39,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 336. [2020-11-29 19:46:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-11-29 19:46:39,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 467 transitions. [2020-11-29 19:46:39,194 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 467 transitions. Word has length 31 [2020-11-29 19:46:39,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:46:39,196 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 467 transitions. [2020-11-29 19:46:39,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:46:39,196 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 467 transitions. [2020-11-29 19:46:39,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-29 19:46:39,198 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:46:39,199 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:46:39,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 19:46:39,199 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:46:39,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:39,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1479282308, now seen corresponding path program 1 times [2020-11-29 19:46:39,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:39,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352354092] [2020-11-29 19:46:39,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:46:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:46:39,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352354092] [2020-11-29 19:46:39,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:46:39,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:46:39,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527313539] [2020-11-29 19:46:39,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:46:39,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:46:39,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:46:39,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:46:39,297 INFO L87 Difference]: Start difference. First operand 336 states and 467 transitions. Second operand 3 states. [2020-11-29 19:46:39,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:46:39,399 INFO L93 Difference]: Finished difference Result 577 states and 798 transitions. [2020-11-29 19:46:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:46:39,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-11-29 19:46:39,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:46:39,402 INFO L225 Difference]: With dead ends: 577 [2020-11-29 19:46:39,402 INFO L226 Difference]: Without dead ends: 247 [2020-11-29 19:46:39,403 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 [2020-11-29 19:46:39,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-11-29 19:46:39,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 239. [2020-11-29 19:46:39,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-11-29 19:46:39,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 325 transitions. [2020-11-29 19:46:39,434 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 325 transitions. Word has length 48 [2020-11-29 19:46:39,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:46:39,434 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 325 transitions. [2020-11-29 19:46:39,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:46:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 325 transitions. [2020-11-29 19:46:39,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-29 19:46:39,436 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:46:39,436 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:46:39,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 19:46:39,439 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:46:39,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:39,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1631590215, now seen corresponding path program 1 times [2020-11-29 19:46:39,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:39,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120167496] [2020-11-29 19:46:39,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:46:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:46:39,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120167496] [2020-11-29 19:46:39,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:46:39,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:46:39,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850929772] [2020-11-29 19:46:39,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:46:39,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:46:39,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:46:39,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:46:39,534 INFO L87 Difference]: Start difference. First operand 239 states and 325 transitions. Second operand 5 states. [2020-11-29 19:46:39,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:46:39,691 INFO L93 Difference]: Finished difference Result 733 states and 994 transitions. [2020-11-29 19:46:39,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:46:39,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-11-29 19:46:39,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:46:39,696 INFO L225 Difference]: With dead ends: 733 [2020-11-29 19:46:39,696 INFO L226 Difference]: Without dead ends: 500 [2020-11-29 19:46:39,697 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 [2020-11-29 19:46:39,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-11-29 19:46:39,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 248. [2020-11-29 19:46:39,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-11-29 19:46:39,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 334 transitions. [2020-11-29 19:46:39,738 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 334 transitions. Word has length 49 [2020-11-29 19:46:39,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:46:39,739 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 334 transitions. [2020-11-29 19:46:39,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:46:39,739 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 334 transitions. [2020-11-29 19:46:39,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-29 19:46:39,740 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:46:39,740 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:46:39,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 19:46:39,740 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:46:39,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:39,741 INFO L82 PathProgramCache]: Analyzing trace with hash -245386821, now seen corresponding path program 1 times [2020-11-29 19:46:39,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:39,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336677596] [2020-11-29 19:46:39,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:46:39,832 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:46:39,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336677596] [2020-11-29 19:46:39,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:46:39,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:46:39,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467028487] [2020-11-29 19:46:39,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:46:39,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:46:39,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:46:39,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:46:39,835 INFO L87 Difference]: Start difference. First operand 248 states and 334 transitions. Second operand 5 states. [2020-11-29 19:46:39,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:46:39,984 INFO L93 Difference]: Finished difference Result 600 states and 800 transitions. [2020-11-29 19:46:39,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:46:39,985 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-11-29 19:46:39,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:46:39,988 INFO L225 Difference]: With dead ends: 600 [2020-11-29 19:46:39,988 INFO L226 Difference]: Without dead ends: 358 [2020-11-29 19:46:39,989 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 [2020-11-29 19:46:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-11-29 19:46:40,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 216. [2020-11-29 19:46:40,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-29 19:46:40,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 284 transitions. [2020-11-29 19:46:40,027 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 284 transitions. Word has length 49 [2020-11-29 19:46:40,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:46:40,028 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 284 transitions. [2020-11-29 19:46:40,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:46:40,028 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 284 transitions. [2020-11-29 19:46:40,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-29 19:46:40,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:46:40,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:46:40,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 19:46:40,029 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:46:40,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:40,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1908839041, now seen corresponding path program 1 times [2020-11-29 19:46:40,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:40,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123509417] [2020-11-29 19:46:40,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:46:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:46:40,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123509417] [2020-11-29 19:46:40,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719352018] [2020-11-29 19:46:40,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87e968da-2bab-42ee-816e-324e39cf17ee/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:46:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:46:40,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:46:40,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:46:40,471 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:46:40,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:46:40,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-29 19:46:40,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947715004] [2020-11-29 19:46:40,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:46:40,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:46:40,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:46:40,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:46:40,474 INFO L87 Difference]: Start difference. First operand 216 states and 284 transitions. Second operand 6 states. [2020-11-29 19:46:40,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:46:40,864 INFO L93 Difference]: Finished difference Result 608 states and 813 transitions. [2020-11-29 19:46:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:46:40,865 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-11-29 19:46:40,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:46:40,868 INFO L225 Difference]: With dead ends: 608 [2020-11-29 19:46:40,868 INFO L226 Difference]: Without dead ends: 446 [2020-11-29 19:46:40,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:46:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-11-29 19:46:40,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 262. [2020-11-29 19:46:40,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-11-29 19:46:40,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 345 transitions. [2020-11-29 19:46:40,909 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 345 transitions. Word has length 50 [2020-11-29 19:46:40,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:46:40,909 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 345 transitions. [2020-11-29 19:46:40,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:46:40,909 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 345 transitions. [2020-11-29 19:46:40,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-29 19:46:40,910 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:46:40,911 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:46:41,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 19:46:41,138 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:46:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:46:41,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1359831384, now seen corresponding path program 2 times [2020-11-29 19:46:41,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:46:41,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305357022] [2020-11-29 19:46:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:46:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:46:41,249 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:46:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:46:41,347 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:46:41,471 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:46:41,472 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:46:41,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 19:46:41,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:46:41 BoogieIcfgContainer [2020-11-29 19:46:41,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:46:41,679 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:46:41,679 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:46:41,679 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:46:41,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:46:35" (3/4) ... [2020-11-29 19:46:41,682 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:46:41,871 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_87e968da-2bab-42ee-816e-324e39cf17ee/bin/uautomizer/witness.graphml [2020-11-29 19:46:41,872 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:46:41,874 INFO L168 Benchmark]: Toolchain (without parser) took 8444.24 ms. Allocated memory was 94.4 MB in the beginning and 172.0 MB in the end (delta: 77.6 MB). Free memory was 64.2 MB in the beginning and 87.3 MB in the end (delta: -23.1 MB). Peak memory consumption was 52.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:46:41,875 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 94.4 MB. Free memory was 53.6 MB in the beginning and 53.6 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:46:41,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.61 ms. Allocated memory is still 94.4 MB. Free memory was 64.2 MB in the beginning and 61.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:46:41,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.82 ms. Allocated memory is still 94.4 MB. Free memory was 61.9 MB in the beginning and 58.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:46:41,876 INFO L168 Benchmark]: Boogie Preprocessor took 61.10 ms. Allocated memory is still 94.4 MB. Free memory was 58.2 MB in the beginning and 55.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:46:41,876 INFO L168 Benchmark]: RCFGBuilder took 1624.80 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 55.6 MB in the beginning and 53.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:46:41,877 INFO L168 Benchmark]: TraceAbstraction took 5761.31 ms. Allocated memory was 113.2 MB in the beginning and 172.0 MB in the end (delta: 58.7 MB). Free memory was 52.7 MB in the beginning and 114.6 MB in the end (delta: -61.9 MB). Peak memory consumption was 47.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:46:41,877 INFO L168 Benchmark]: Witness Printer took 193.25 ms. Allocated memory is still 172.0 MB. Free memory was 114.6 MB in the beginning and 87.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:46:41,880 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 94.4 MB. Free memory was 53.6 MB in the beginning and 53.6 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 686.61 ms. Allocated memory is still 94.4 MB. Free memory was 64.2 MB in the beginning and 61.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.82 ms. Allocated memory is still 94.4 MB. Free memory was 61.9 MB in the beginning and 58.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.10 ms. Allocated memory is still 94.4 MB. Free memory was 58.2 MB in the beginning and 55.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1624.80 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 55.6 MB in the beginning and 53.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5761.31 ms. Allocated memory was 113.2 MB in the beginning and 172.0 MB in the end (delta: 58.7 MB). Free memory was 52.7 MB in the beginning and 114.6 MB in the end (delta: -61.9 MB). Peak memory consumption was 47.8 MB. Max. memory is 16.1 GB. * Witness Printer took 193.25 ms. Allocated memory is still 172.0 MB. Free memory was 114.6 MB in the beginning and 87.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 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: [L125] int pumpRunning = 0; [L126] int systemActive = 1; [L336] int cleanupTimeShifts = 4; [L436] int waterLevel = 1; [L437] int methaneLevelCritical = 0; [L699] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L412] int retValue_acc ; [L413] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L948] int retValue_acc ; [L951] retValue_acc = 1 [L952] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L419] tmp = valid_product() [L421] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L49] int splverifierCounter ; [L50] int tmp ; [L51] int tmp___0 ; [L52] int tmp___1 ; [L53] int tmp___2 ; [L56] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L66] tmp = __VERIFIER_nondet_int() [L68] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L454] COND TRUE waterLevel < 2 [L455] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L133] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND TRUE \read(systemActive) [L188] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L191] COND FALSE !(\read(pumpRunning)) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] COND TRUE ! pumpRunning [L285] int retValue_acc ; [L286] int tmp ; [L287] int tmp___0 ; [L516] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L519] COND FALSE !(waterLevel < 2) [L523] retValue_acc = 0 [L524] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L291] tmp = isHighWaterSensorDry() [L293] COND FALSE !(\read(tmp)) [L296] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L298] retValue_acc = tmp___0 [L299] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L167] tmp = isHighWaterLevel() [L169] COND TRUE \read(tmp) [L216] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L902] tmp = getWaterLevel() [L904] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L66] tmp = __VERIFIER_nondet_int() [L68] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L133] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L442] COND TRUE waterLevel > 0 [L443] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L140] COND TRUE \read(systemActive) [L188] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L191] COND TRUE \read(pumpRunning) [L229] int retValue_acc ; [L475] int retValue_acc ; [L478] retValue_acc = methaneLevelCritical [L479] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L233] retValue_acc = isMethaneLevelCritical() [L235] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L193] tmp = isMethaneAlarm() [L195] COND FALSE !(\read(tmp)) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L902] tmp = getWaterLevel() [L904] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L66] tmp = __VERIFIER_nondet_int() [L68] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L133] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L442] COND TRUE waterLevel > 0 [L443] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L140] COND TRUE \read(systemActive) [L188] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L191] COND TRUE \read(pumpRunning) [L229] int retValue_acc ; [L475] int retValue_acc ; [L478] retValue_acc = methaneLevelCritical [L479] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L233] retValue_acc = isMethaneLevelCritical() [L235] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L193] tmp = isMethaneAlarm() [L195] COND FALSE !(\read(tmp)) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L165] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L902] tmp = getWaterLevel() [L904] COND TRUE tmp == 0 [L240] int retValue_acc ; [L243] retValue_acc = pumpRunning [L244] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L906] tmp___0 = isPumpRunning() [L908] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product40.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 116 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.4s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1409 SDtfs, 1510 SDslu, 1947 SDs, 0 SdLazy, 301 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=336occurred 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: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 1432 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 538 NumberOfCodeBlocks, 538 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 455 ConstructedInterpolants, 0 QuantifiedInterpolants, 28097 SizeOfPredicates, 4 NumberOfNonLiveVariables, 420 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 64/70 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...