./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product53.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_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/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 8e12a99510f3863baa75b24484dbcccd367dbf9c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 19:14:04,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:14:04,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:14:04,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:14:04,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:14:04,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:14:04,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:14:04,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:14:04,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:14:04,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:14:04,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:14:04,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:14:04,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:14:04,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:14:04,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:14:04,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:14:04,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:14:04,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:14:04,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:14:04,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:14:04,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:14:04,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:14:04,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:14:04,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:14:04,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:14:04,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:14:04,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:14:04,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:14:04,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:14:04,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:14:04,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:14:04,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:14:04,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:14:04,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:14:04,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:14:04,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:14:04,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:14:04,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:14:04,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:14:04,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:14:04,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:14:04,997 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:14:05,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:14:05,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:14:05,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:14:05,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:14:05,038 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:14:05,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:14:05,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:14:05,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:14:05,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:14:05,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:14:05,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:14:05,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:14:05,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:14:05,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:14:05,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:14:05,042 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:14:05,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:14:05,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:14:05,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:14:05,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:14:05,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:14:05,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:14:05,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:14:05,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:14:05,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:14:05,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:14:05,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:14:05,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:14:05,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:14:05,060 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_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e12a99510f3863baa75b24484dbcccd367dbf9c [2020-11-29 19:14:05,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:14:05,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:14:05,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:14:05,351 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:14:05,353 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:14:05,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2020-11-29 19:14:05,421 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/bin/uautomizer/data/e5af24e52/2c49fa707df6495faac048cd4668cb40/FLAG58d5b3602 [2020-11-29 19:14:05,971 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:14:05,972 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/sv-benchmarks/c/product-lines/minepump_spec1_product53.cil.c [2020-11-29 19:14:05,995 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/bin/uautomizer/data/e5af24e52/2c49fa707df6495faac048cd4668cb40/FLAG58d5b3602 [2020-11-29 19:14:06,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/bin/uautomizer/data/e5af24e52/2c49fa707df6495faac048cd4668cb40 [2020-11-29 19:14:06,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:14:06,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:14:06,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:14:06,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:14:06,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:14:06,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:14:06" (1/1) ... [2020-11-29 19:14:06,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7b176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:06, skipping insertion in model container [2020-11-29 19:14:06,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:14:06" (1/1) ... [2020-11-29 19:14:06,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:14:06,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:14:06,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:14:06,752 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:14:06,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:14:06,903 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:14:06,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:06 WrapperNode [2020-11-29 19:14:06,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:14:06,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:14:06,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:14:06,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:14:06,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:06" (1/1) ... [2020-11-29 19:14:06,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:06" (1/1) ... [2020-11-29 19:14:07,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:14:07,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:14:07,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:14:07,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:14:07,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:06" (1/1) ... [2020-11-29 19:14:07,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:06" (1/1) ... [2020-11-29 19:14:07,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:06" (1/1) ... [2020-11-29 19:14:07,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:06" (1/1) ... [2020-11-29 19:14:07,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:06" (1/1) ... [2020-11-29 19:14:07,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:06" (1/1) ... [2020-11-29 19:14:07,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:06" (1/1) ... [2020-11-29 19:14:07,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:14:07,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:14:07,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:14:07,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:14:07,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/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 19:14:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:14:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:14:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:14:07,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:14:08,432 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:14:08,432 INFO L298 CfgBuilder]: Removed 282 assume(true) statements. [2020-11-29 19:14:08,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:14:08 BoogieIcfgContainer [2020-11-29 19:14:08,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:14:08,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:14:08,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:14:08,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:14:08,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:14:06" (1/3) ... [2020-11-29 19:14:08,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58660f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:14:08, skipping insertion in model container [2020-11-29 19:14:08,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:14:06" (2/3) ... [2020-11-29 19:14:08,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58660f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:14:08, skipping insertion in model container [2020-11-29 19:14:08,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:14:08" (3/3) ... [2020-11-29 19:14:08,443 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2020-11-29 19:14:08,453 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:14:08,462 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-29 19:14:08,473 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 19:14:08,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:14:08,508 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:14:08,509 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:14:08,509 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:14:08,509 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:14:08,509 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:14:08,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:14:08,509 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:14:08,535 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-11-29 19:14:08,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:14:08,543 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:08,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:08,544 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:08,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:08,562 INFO L82 PathProgramCache]: Analyzing trace with hash -587287140, now seen corresponding path program 1 times [2020-11-29 19:14:08,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:08,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131877719] [2020-11-29 19:14:08,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:08,850 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 19:14:08,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131877719] [2020-11-29 19:14:08,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:08,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:14:08,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009955087] [2020-11-29 19:14:08,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:14:08,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:08,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:14:08,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:14:08,874 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 2 states. [2020-11-29 19:14:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:08,916 INFO L93 Difference]: Finished difference Result 375 states and 572 transitions. [2020-11-29 19:14:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:14:08,918 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-29 19:14:08,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:08,931 INFO L225 Difference]: With dead ends: 375 [2020-11-29 19:14:08,932 INFO L226 Difference]: Without dead ends: 185 [2020-11-29 19:14:08,936 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 19:14:08,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-29 19:14:08,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2020-11-29 19:14:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-11-29 19:14:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 276 transitions. [2020-11-29 19:14:08,986 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 276 transitions. Word has length 16 [2020-11-29 19:14:08,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:08,986 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 276 transitions. [2020-11-29 19:14:08,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:14:08,987 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 276 transitions. [2020-11-29 19:14:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 19:14:08,988 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:08,988 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 19:14:08,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:14:08,989 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:08,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:08,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1634044037, now seen corresponding path program 1 times [2020-11-29 19:14:08,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:08,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199465410] [2020-11-29 19:14:08,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:09,113 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 19:14:09,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199465410] [2020-11-29 19:14:09,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:09,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:14:09,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511340551] [2020-11-29 19:14:09,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:14:09,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:09,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:14:09,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:14:09,118 INFO L87 Difference]: Start difference. First operand 185 states and 276 transitions. Second operand 3 states. [2020-11-29 19:14:09,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:09,134 INFO L93 Difference]: Finished difference Result 185 states and 276 transitions. [2020-11-29 19:14:09,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:14:09,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-29 19:14:09,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:09,146 INFO L225 Difference]: With dead ends: 185 [2020-11-29 19:14:09,146 INFO L226 Difference]: Without dead ends: 71 [2020-11-29 19:14:09,148 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 19:14:09,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-29 19:14:09,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-11-29 19:14:09,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-29 19:14:09,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 105 transitions. [2020-11-29 19:14:09,156 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 105 transitions. Word has length 17 [2020-11-29 19:14:09,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:09,157 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 105 transitions. [2020-11-29 19:14:09,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:14:09,157 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 105 transitions. [2020-11-29 19:14:09,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 19:14:09,158 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:09,158 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 19:14:09,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:14:09,159 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:09,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:09,159 INFO L82 PathProgramCache]: Analyzing trace with hash 748559286, now seen corresponding path program 1 times [2020-11-29 19:14:09,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:09,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482098027] [2020-11-29 19:14:09,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:09,326 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 19:14:09,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482098027] [2020-11-29 19:14:09,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:09,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:14:09,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410554625] [2020-11-29 19:14:09,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:14:09,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:09,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:14:09,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:14:09,329 INFO L87 Difference]: Start difference. First operand 71 states and 105 transitions. Second operand 6 states. [2020-11-29 19:14:09,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:09,564 INFO L93 Difference]: Finished difference Result 136 states and 204 transitions. [2020-11-29 19:14:09,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:14:09,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-29 19:14:09,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:09,568 INFO L225 Difference]: With dead ends: 136 [2020-11-29 19:14:09,569 INFO L226 Difference]: Without dead ends: 71 [2020-11-29 19:14:09,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:14:09,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-29 19:14:09,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-11-29 19:14:09,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-29 19:14:09,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 104 transitions. [2020-11-29 19:14:09,578 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 104 transitions. Word has length 22 [2020-11-29 19:14:09,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:09,579 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 104 transitions. [2020-11-29 19:14:09,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:14:09,579 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 104 transitions. [2020-11-29 19:14:09,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 19:14:09,580 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:09,580 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 19:14:09,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:14:09,587 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:09,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:09,588 INFO L82 PathProgramCache]: Analyzing trace with hash -682519882, now seen corresponding path program 1 times [2020-11-29 19:14:09,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:09,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379709297] [2020-11-29 19:14:09,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:09,716 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 19:14:09,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379709297] [2020-11-29 19:14:09,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:09,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:14:09,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644435234] [2020-11-29 19:14:09,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:14:09,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:09,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:14:09,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:14:09,718 INFO L87 Difference]: Start difference. First operand 71 states and 104 transitions. Second operand 3 states. [2020-11-29 19:14:09,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:09,772 INFO L93 Difference]: Finished difference Result 145 states and 214 transitions. [2020-11-29 19:14:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:14:09,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-29 19:14:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:09,774 INFO L225 Difference]: With dead ends: 145 [2020-11-29 19:14:09,774 INFO L226 Difference]: Without dead ends: 80 [2020-11-29 19:14:09,775 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 19:14:09,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-29 19:14:09,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-11-29 19:14:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-29 19:14:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2020-11-29 19:14:09,785 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 110 transitions. Word has length 25 [2020-11-29 19:14:09,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:09,785 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 110 transitions. [2020-11-29 19:14:09,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:14:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 110 transitions. [2020-11-29 19:14:09,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 19:14:09,786 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:09,787 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 19:14:09,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:14:09,787 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:09,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:09,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1459548505, now seen corresponding path program 1 times [2020-11-29 19:14:09,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:09,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231422973] [2020-11-29 19:14:09,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:09,870 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 19:14:09,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231422973] [2020-11-29 19:14:09,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:09,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:14:09,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982807463] [2020-11-29 19:14:09,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:14:09,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:09,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:14:09,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:09,872 INFO L87 Difference]: Start difference. First operand 78 states and 110 transitions. Second operand 5 states. [2020-11-29 19:14:09,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:09,968 INFO L93 Difference]: Finished difference Result 204 states and 285 transitions. [2020-11-29 19:14:09,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:14:09,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-29 19:14:09,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:09,970 INFO L225 Difference]: With dead ends: 204 [2020-11-29 19:14:09,970 INFO L226 Difference]: Without dead ends: 132 [2020-11-29 19:14:09,971 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 19:14:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-29 19:14:09,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2020-11-29 19:14:09,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-29 19:14:09,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 119 transitions. [2020-11-29 19:14:09,986 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 119 transitions. Word has length 31 [2020-11-29 19:14:09,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:09,987 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 119 transitions. [2020-11-29 19:14:09,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:14:09,987 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 119 transitions. [2020-11-29 19:14:09,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 19:14:09,988 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:09,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:09,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 19:14:09,989 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:09,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:09,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1202962538, now seen corresponding path program 1 times [2020-11-29 19:14:09,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:09,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378975550] [2020-11-29 19:14:09,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:10,101 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 19:14:10,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378975550] [2020-11-29 19:14:10,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:10,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:10,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73532312] [2020-11-29 19:14:10,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:14:10,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:10,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:14:10,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:10,104 INFO L87 Difference]: Start difference. First operand 87 states and 119 transitions. Second operand 5 states. [2020-11-29 19:14:10,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:10,227 INFO L93 Difference]: Finished difference Result 431 states and 600 transitions. [2020-11-29 19:14:10,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:14:10,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-29 19:14:10,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:10,230 INFO L225 Difference]: With dead ends: 431 [2020-11-29 19:14:10,231 INFO L226 Difference]: Without dead ends: 350 [2020-11-29 19:14:10,236 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 19:14:10,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-11-29 19:14:10,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 162. [2020-11-29 19:14:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-11-29 19:14:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 221 transitions. [2020-11-29 19:14:10,276 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 221 transitions. Word has length 31 [2020-11-29 19:14:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:10,276 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 221 transitions. [2020-11-29 19:14:10,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:14:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 221 transitions. [2020-11-29 19:14:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 19:14:10,278 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:10,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:10,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 19:14:10,278 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:10,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:10,279 INFO L82 PathProgramCache]: Analyzing trace with hash 552949620, now seen corresponding path program 1 times [2020-11-29 19:14:10,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:10,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222305726] [2020-11-29 19:14:10,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:10,365 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 19:14:10,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222305726] [2020-11-29 19:14:10,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:10,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:10,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708737726] [2020-11-29 19:14:10,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:14:10,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:10,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:14:10,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:14:10,368 INFO L87 Difference]: Start difference. First operand 162 states and 221 transitions. Second operand 5 states. [2020-11-29 19:14:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:10,527 INFO L93 Difference]: Finished difference Result 470 states and 642 transitions. [2020-11-29 19:14:10,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:14:10,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-11-29 19:14:10,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:10,531 INFO L225 Difference]: With dead ends: 470 [2020-11-29 19:14:10,531 INFO L226 Difference]: Without dead ends: 468 [2020-11-29 19:14:10,531 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 19:14:10,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-11-29 19:14:10,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 162. [2020-11-29 19:14:10,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-11-29 19:14:10,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 220 transitions. [2020-11-29 19:14:10,580 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 220 transitions. Word has length 32 [2020-11-29 19:14:10,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:10,581 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 220 transitions. [2020-11-29 19:14:10,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:14:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 220 transitions. [2020-11-29 19:14:10,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 19:14:10,585 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:10,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:10,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 19:14:10,586 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:10,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:10,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1792378863, now seen corresponding path program 1 times [2020-11-29 19:14:10,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:10,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410355250] [2020-11-29 19:14:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:10,646 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 19:14:10,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410355250] [2020-11-29 19:14:10,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:10,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:14:10,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481613198] [2020-11-29 19:14:10,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:14:10,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:10,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:14:10,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:14:10,649 INFO L87 Difference]: Start difference. First operand 162 states and 220 transitions. Second operand 4 states. [2020-11-29 19:14:10,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:10,719 INFO L93 Difference]: Finished difference Result 388 states and 522 transitions. [2020-11-29 19:14:10,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:14:10,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-29 19:14:10,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:10,722 INFO L225 Difference]: With dead ends: 388 [2020-11-29 19:14:10,722 INFO L226 Difference]: Without dead ends: 232 [2020-11-29 19:14:10,723 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 19:14:10,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-11-29 19:14:10,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 174. [2020-11-29 19:14:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-11-29 19:14:10,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2020-11-29 19:14:10,743 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 32 [2020-11-29 19:14:10,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:10,745 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2020-11-29 19:14:10,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:14:10,745 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2020-11-29 19:14:10,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 19:14:10,751 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:10,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:10,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 19:14:10,752 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:10,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:10,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2050544301, now seen corresponding path program 1 times [2020-11-29 19:14:10,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:10,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515668188] [2020-11-29 19:14:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:10,820 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 19:14:10,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515668188] [2020-11-29 19:14:10,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:14:10,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:14:10,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647252950] [2020-11-29 19:14:10,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:14:10,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:14:10,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:14:10,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:14:10,822 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand 3 states. [2020-11-29 19:14:10,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:14:10,861 INFO L93 Difference]: Finished difference Result 394 states and 524 transitions. [2020-11-29 19:14:10,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:14:10,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-11-29 19:14:10,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:14:10,863 INFO L225 Difference]: With dead ends: 394 [2020-11-29 19:14:10,863 INFO L226 Difference]: Without dead ends: 226 [2020-11-29 19:14:10,864 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 19:14:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-29 19:14:10,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-11-29 19:14:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-11-29 19:14:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 294 transitions. [2020-11-29 19:14:10,888 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 294 transitions. Word has length 32 [2020-11-29 19:14:10,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:14:10,888 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 294 transitions. [2020-11-29 19:14:10,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:14:10,889 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 294 transitions. [2020-11-29 19:14:10,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 19:14:10,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:14:10,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:10,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 19:14:10,891 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:14:10,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:10,892 INFO L82 PathProgramCache]: Analyzing trace with hash 979497771, now seen corresponding path program 1 times [2020-11-29 19:14:10,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:10,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103874941] [2020-11-29 19:14:10,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:11,005 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:11,068 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:11,137 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:14:11,137 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:14:11,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 19:14:11,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:14:11 BoogieIcfgContainer [2020-11-29 19:14:11,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:14:11,293 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:14:11,293 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:14:11,294 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:14:11,294 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:14:08" (3/4) ... [2020-11-29 19:14:11,305 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:14:11,449 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_dbb61012-d36b-4dfc-8b4c-cb7dc80552c8/bin/uautomizer/witness.graphml [2020-11-29 19:14:11,449 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:14:11,452 INFO L168 Benchmark]: Toolchain (without parser) took 5177.45 ms. Allocated memory was 94.4 MB in the beginning and 148.9 MB in the end (delta: 54.5 MB). Free memory was 73.7 MB in the beginning and 84.8 MB in the end (delta: -11.0 MB). Peak memory consumption was 44.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:11,452 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory was 53.9 MB in the beginning and 53.9 MB in the end (delta: 53.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:14:11,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.42 ms. Allocated memory is still 94.4 MB. Free memory was 73.5 MB in the beginning and 56.5 MB in the end (delta: 17.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:11,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.46 ms. Allocated memory is still 94.4 MB. Free memory was 56.3 MB in the beginning and 51.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:11,454 INFO L168 Benchmark]: Boogie Preprocessor took 93.18 ms. Allocated memory is still 94.4 MB. Free memory was 51.6 MB in the beginning and 47.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:11,455 INFO L168 Benchmark]: RCFGBuilder took 1319.47 ms. Allocated memory is still 94.4 MB. Free memory was 47.9 MB in the beginning and 38.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:11,455 INFO L168 Benchmark]: TraceAbstraction took 2856.70 ms. Allocated memory was 94.4 MB in the beginning and 148.9 MB in the end (delta: 54.5 MB). Free memory was 37.4 MB in the beginning and 97.3 MB in the end (delta: -59.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:14:11,456 INFO L168 Benchmark]: Witness Printer took 156.42 ms. Allocated memory is still 148.9 MB. Free memory was 97.3 MB in the beginning and 84.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:14:11,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory was 53.9 MB in the beginning and 53.9 MB in the end (delta: 53.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 629.42 ms. Allocated memory is still 94.4 MB. Free memory was 73.5 MB in the beginning and 56.5 MB in the end (delta: 17.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 112.46 ms. Allocated memory is still 94.4 MB. Free memory was 56.3 MB in the beginning and 51.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 93.18 ms. Allocated memory is still 94.4 MB. Free memory was 51.6 MB in the beginning and 47.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1319.47 ms. Allocated memory is still 94.4 MB. Free memory was 47.9 MB in the beginning and 38.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 24.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2856.70 ms. Allocated memory was 94.4 MB in the beginning and 148.9 MB in the end (delta: 54.5 MB). Free memory was 37.4 MB in the beginning and 97.3 MB in the end (delta: -59.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 156.42 ms. Allocated memory is still 148.9 MB. Free memory was 97.3 MB in the beginning and 84.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L446] int cleanupTimeShifts = 4; [L556] int pumpRunning = 0; [L557] int systemActive = 1; [L880] int waterLevel = 1; [L881] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L527] int retValue_acc ; [L528] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L870] int retValue_acc ; [L873] retValue_acc = 1 [L874] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L534] tmp = valid_product() [L536] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L780] int splverifierCounter ; [L781] int tmp ; [L782] int tmp___0 ; [L783] int tmp___1 ; [L784] int tmp___2 ; [L787] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L789] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L791] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L797] tmp = __VERIFIER_nondet_int() [L799] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L898] COND TRUE waterLevel < 2 [L899] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L807] tmp___0 = __VERIFIER_nondet_int() [L809] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L910] COND FALSE !(\read(methaneLevelCritical)) [L913] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L817] tmp___2 = __VERIFIER_nondet_int() [L819] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L563] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L570] COND TRUE \read(systemActive) [L644] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L647] COND FALSE !(\read(pumpRunning)) [L618] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L621] COND FALSE !(\read(pumpRunning)) [L592] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L595] COND TRUE ! pumpRunning [L741] int retValue_acc ; [L742] int tmp ; [L743] int tmp___0 ; [L960] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L963] COND FALSE !(waterLevel < 2) [L967] retValue_acc = 0 [L968] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L747] tmp = isHighWaterSensorDry() [L749] COND FALSE !(\read(tmp)) [L752] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L754] retValue_acc = tmp___0 [L755] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L597] tmp = isHighWaterLevel() [L599] COND TRUE \read(tmp) [L672] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L46] int tmp ; [L47] int tmp___0 ; [L919] int retValue_acc ; [L922] retValue_acc = methaneLevelCritical [L923] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L696] int retValue_acc ; [L699] retValue_acc = pumpRunning [L700] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L3] __assert_fail("0", "minepump_spec1_product53.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 192 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1137 SDtfs, 1315 SDslu, 1237 SDs, 0 SdLazy, 199 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 599 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 271 NumberOfCodeBlocks, 271 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 229 ConstructedInterpolants, 0 QuantifiedInterpolants, 12994 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...