./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product52.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_4ae09bad-2a97-48e4-84c0-c9b16f89f759/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4ae09bad-2a97-48e4-84c0-c9b16f89f759/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4ae09bad-2a97-48e4-84c0-c9b16f89f759/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4ae09bad-2a97-48e4-84c0-c9b16f89f759/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4ae09bad-2a97-48e4-84c0-c9b16f89f759/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4ae09bad-2a97-48e4-84c0-c9b16f89f759/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 bde924d16b17f34a4892c0a089b602f0bd3cd51c .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:43:40,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:43:40,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:43:40,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:43:40,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:43:40,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:43:40,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:43:40,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:43:40,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:43:40,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:43:40,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:43:40,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:43:40,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:43:40,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:43:40,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:43:40,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:43:40,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:43:40,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:43:40,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:43:40,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:43:40,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:43:40,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:43:40,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:43:40,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:43:40,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:43:40,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:43:40,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:43:40,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:43:40,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:43:40,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:43:40,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:43:40,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:43:40,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:43:40,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:43:40,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:43:40,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:43:40,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:43:40,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:43:40,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:43:40,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:43:40,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:43:40,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4ae09bad-2a97-48e4-84c0-c9b16f89f759/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:43:40,956 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:43:40,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:43:40,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:43:40,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:43:40,961 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:43:40,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:43:40,962 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:43:40,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:43:40,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:43:40,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:43:40,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:43:40,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:43:40,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:43:40,965 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:43:40,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:43:40,966 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:43:40,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:43:40,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:43:40,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:43:40,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:43:40,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:43:40,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:43:40,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:43:40,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:43:40,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:43:40,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:43:40,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:43:40,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:43:40,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:43:40,971 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_4ae09bad-2a97-48e4-84c0-c9b16f89f759/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4ae09bad-2a97-48e4-84c0-c9b16f89f759/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde924d16b17f34a4892c0a089b602f0bd3cd51c [2020-11-30 00:43:41,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:43:41,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:43:41,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:43:41,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:43:41,403 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:43:41,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4ae09bad-2a97-48e4-84c0-c9b16f89f759/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c [2020-11-30 00:43:41,487 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4ae09bad-2a97-48e4-84c0-c9b16f89f759/bin/uautomizer/data/9f1d3df56/1b011fa26ece444d84cc627b60fb8c8e/FLAGb85675c87 [2020-11-30 00:43:42,180 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:43:42,181 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4ae09bad-2a97-48e4-84c0-c9b16f89f759/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c [2020-11-30 00:43:42,207 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4ae09bad-2a97-48e4-84c0-c9b16f89f759/bin/uautomizer/data/9f1d3df56/1b011fa26ece444d84cc627b60fb8c8e/FLAGb85675c87 [2020-11-30 00:43:42,479 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4ae09bad-2a97-48e4-84c0-c9b16f89f759/bin/uautomizer/data/9f1d3df56/1b011fa26ece444d84cc627b60fb8c8e [2020-11-30 00:43:42,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:43:42,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:43:42,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:43:42,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:43:42,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:43:42,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:43:42" (1/1) ... [2020-11-30 00:43:42,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6304d02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:42, skipping insertion in model container [2020-11-30 00:43:42,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:43:42" (1/1) ... [2020-11-30 00:43:42,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:43:42,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:43:43,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:43:43,020 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:43:43,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:43:43,238 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:43:43,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43 WrapperNode [2020-11-30 00:43:43,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:43:43,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:43:43,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:43:43,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:43:43,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:43:43,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:43:43,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:43:43,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:43:43,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... [2020-11-30 00:43:43,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:43:43,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:43:43,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:43:43,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:43:43,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4ae09bad-2a97-48e4-84c0-c9b16f89f759/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:43:43,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:43:43,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:43:43,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:43:43,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:43:45,091 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:43:45,091 INFO L298 CfgBuilder]: Removed 168 assume(true) statements. [2020-11-30 00:43:45,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:45 BoogieIcfgContainer [2020-11-30 00:43:45,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:43:45,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:43:45,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:43:45,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:43:45,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:43:42" (1/3) ... [2020-11-30 00:43:45,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f3afeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:43:45, skipping insertion in model container [2020-11-30 00:43:45,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:43:43" (2/3) ... [2020-11-30 00:43:45,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f3afeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:43:45, skipping insertion in model container [2020-11-30 00:43:45,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:45" (3/3) ... [2020-11-30 00:43:45,111 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2020-11-30 00:43:45,132 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:43:45,136 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-30 00:43:45,147 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-30 00:43:45,177 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:43:45,177 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:43:45,177 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:43:45,178 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:43:45,178 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:43:45,178 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:43:45,178 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:43:45,178 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:43:45,201 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states. [2020-11-30 00:43:45,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:43:45,208 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:45,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:45,210 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:45,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:45,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1013956240, now seen corresponding path program 1 times [2020-11-30 00:43:45,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:45,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005190837] [2020-11-30 00:43:45,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:45,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005190837] [2020-11-30 00:43:45,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:45,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:43:45,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827872491] [2020-11-30 00:43:45,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:43:45,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:45,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:43:45,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:43:45,634 INFO L87 Difference]: Start difference. First operand 122 states. Second operand 2 states. [2020-11-30 00:43:45,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:45,700 INFO L93 Difference]: Finished difference Result 235 states and 356 transitions. [2020-11-30 00:43:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:43:45,701 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-30 00:43:45,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:45,733 INFO L225 Difference]: With dead ends: 235 [2020-11-30 00:43:45,733 INFO L226 Difference]: Without dead ends: 115 [2020-11-30 00:43:45,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:43:45,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-30 00:43:45,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-11-30 00:43:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-11-30 00:43:45,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2020-11-30 00:43:45,829 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 16 [2020-11-30 00:43:45,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:45,830 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2020-11-30 00:43:45,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:43:45,831 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2020-11-30 00:43:45,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:43:45,835 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:45,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:45,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:43:45,837 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:45,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:45,843 INFO L82 PathProgramCache]: Analyzing trace with hash -2060713137, now seen corresponding path program 1 times [2020-11-30 00:43:45,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:45,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63696447] [2020-11-30 00:43:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:46,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63696447] [2020-11-30 00:43:46,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:46,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:43:46,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600371284] [2020-11-30 00:43:46,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:43:46,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:46,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:43:46,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:43:46,021 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand 3 states. [2020-11-30 00:43:46,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:46,048 INFO L93 Difference]: Finished difference Result 115 states and 168 transitions. [2020-11-30 00:43:46,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:43:46,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-30 00:43:46,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:46,051 INFO L225 Difference]: With dead ends: 115 [2020-11-30 00:43:46,052 INFO L226 Difference]: Without dead ends: 49 [2020-11-30 00:43:46,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:43:46,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-30 00:43:46,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-30 00:43:46,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-30 00:43:46,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2020-11-30 00:43:46,068 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 17 [2020-11-30 00:43:46,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:46,069 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2020-11-30 00:43:46,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:43:46,070 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2020-11-30 00:43:46,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:43:46,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:46,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:46,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:43:46,076 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:46,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:46,078 INFO L82 PathProgramCache]: Analyzing trace with hash -2061312917, now seen corresponding path program 1 times [2020-11-30 00:43:46,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:46,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779600143] [2020-11-30 00:43:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:46,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779600143] [2020-11-30 00:43:46,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:46,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:43:46,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868778266] [2020-11-30 00:43:46,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:43:46,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:46,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:43:46,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:43:46,316 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand 5 states. [2020-11-30 00:43:46,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:46,429 INFO L93 Difference]: Finished difference Result 115 states and 170 transitions. [2020-11-30 00:43:46,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:43:46,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-30 00:43:46,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:46,437 INFO L225 Difference]: With dead ends: 115 [2020-11-30 00:43:46,439 INFO L226 Difference]: Without dead ends: 72 [2020-11-30 00:43:46,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:43:46,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-30 00:43:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-11-30 00:43:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-30 00:43:46,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2020-11-30 00:43:46,463 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 22 [2020-11-30 00:43:46,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:46,464 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2020-11-30 00:43:46,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:43:46,464 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2020-11-30 00:43:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:43:46,466 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:46,467 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] [2020-11-30 00:43:46,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:43:46,467 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:46,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:46,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1499976397, now seen corresponding path program 1 times [2020-11-30 00:43:46,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:46,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579823645] [2020-11-30 00:43:46,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:46,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579823645] [2020-11-30 00:43:46,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:46,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:43:46,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960873415] [2020-11-30 00:43:46,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:43:46,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:46,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:43:46,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:43:46,576 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand 3 states. [2020-11-30 00:43:46,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:46,652 INFO L93 Difference]: Finished difference Result 151 states and 224 transitions. [2020-11-30 00:43:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:43:46,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-30 00:43:46,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:46,654 INFO L225 Difference]: With dead ends: 151 [2020-11-30 00:43:46,654 INFO L226 Difference]: Without dead ends: 89 [2020-11-30 00:43:46,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:43:46,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-30 00:43:46,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2020-11-30 00:43:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-30 00:43:46,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2020-11-30 00:43:46,675 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 24 [2020-11-30 00:43:46,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:46,675 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2020-11-30 00:43:46,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:43:46,675 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2020-11-30 00:43:46,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 00:43:46,677 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:46,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:46,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:43:46,681 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:46,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:46,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1678878848, now seen corresponding path program 1 times [2020-11-30 00:43:46,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:46,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174333129] [2020-11-30 00:43:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:46,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174333129] [2020-11-30 00:43:46,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:46,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:43:46,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474206255] [2020-11-30 00:43:46,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:43:46,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:46,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:43:46,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:43:46,836 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand 5 states. [2020-11-30 00:43:46,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:46,976 INFO L93 Difference]: Finished difference Result 445 states and 650 transitions. [2020-11-30 00:43:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:43:46,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-30 00:43:46,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:46,982 INFO L225 Difference]: With dead ends: 445 [2020-11-30 00:43:46,983 INFO L226 Difference]: Without dead ends: 364 [2020-11-30 00:43:46,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:43:46,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-11-30 00:43:47,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 160. [2020-11-30 00:43:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-11-30 00:43:47,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 226 transitions. [2020-11-30 00:43:47,034 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 226 transitions. Word has length 25 [2020-11-30 00:43:47,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:47,035 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 226 transitions. [2020-11-30 00:43:47,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:43:47,035 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 226 transitions. [2020-11-30 00:43:47,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 00:43:47,043 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:47,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:47,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:43:47,044 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:47,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:47,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1475071754, now seen corresponding path program 1 times [2020-11-30 00:43:47,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:47,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227604384] [2020-11-30 00:43:47,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:47,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227604384] [2020-11-30 00:43:47,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:47,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:43:47,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916240169] [2020-11-30 00:43:47,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:43:47,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:47,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:43:47,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:43:47,192 INFO L87 Difference]: Start difference. First operand 160 states and 226 transitions. Second operand 5 states. [2020-11-30 00:43:47,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:47,376 INFO L93 Difference]: Finished difference Result 448 states and 637 transitions. [2020-11-30 00:43:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:43:47,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-30 00:43:47,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:47,381 INFO L225 Difference]: With dead ends: 448 [2020-11-30 00:43:47,381 INFO L226 Difference]: Without dead ends: 446 [2020-11-30 00:43:47,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:43:47,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-11-30 00:43:47,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 160. [2020-11-30 00:43:47,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-11-30 00:43:47,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 224 transitions. [2020-11-30 00:43:47,406 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 224 transitions. Word has length 26 [2020-11-30 00:43:47,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:47,407 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 224 transitions. [2020-11-30 00:43:47,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:43:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 224 transitions. [2020-11-30 00:43:47,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 00:43:47,409 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:47,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:47,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:43:47,410 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:47,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:47,410 INFO L82 PathProgramCache]: Analyzing trace with hash 317568404, now seen corresponding path program 1 times [2020-11-30 00:43:47,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:47,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666456738] [2020-11-30 00:43:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:47,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666456738] [2020-11-30 00:43:47,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:47,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:43:47,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838093803] [2020-11-30 00:43:47,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:43:47,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:47,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:43:47,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:43:47,502 INFO L87 Difference]: Start difference. First operand 160 states and 224 transitions. Second operand 5 states. [2020-11-30 00:43:47,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:47,632 INFO L93 Difference]: Finished difference Result 476 states and 660 transitions. [2020-11-30 00:43:47,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:43:47,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-30 00:43:47,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:47,635 INFO L225 Difference]: With dead ends: 476 [2020-11-30 00:43:47,635 INFO L226 Difference]: Without dead ends: 322 [2020-11-30 00:43:47,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:43:47,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-11-30 00:43:47,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 172. [2020-11-30 00:43:47,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-30 00:43:47,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 236 transitions. [2020-11-30 00:43:47,674 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 236 transitions. Word has length 31 [2020-11-30 00:43:47,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:47,676 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 236 transitions. [2020-11-30 00:43:47,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:43:47,677 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 236 transitions. [2020-11-30 00:43:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 00:43:47,681 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:47,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:47,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:43:47,682 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:47,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:47,683 INFO L82 PathProgramCache]: Analyzing trace with hash -75458606, now seen corresponding path program 1 times [2020-11-30 00:43:47,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:47,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885651599] [2020-11-30 00:43:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:47,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885651599] [2020-11-30 00:43:47,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:47,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:43:47,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7703616] [2020-11-30 00:43:47,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:43:47,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:47,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:43:47,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:43:47,832 INFO L87 Difference]: Start difference. First operand 172 states and 236 transitions. Second operand 6 states. [2020-11-30 00:43:47,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:47,948 INFO L93 Difference]: Finished difference Result 510 states and 694 transitions. [2020-11-30 00:43:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:43:47,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-11-30 00:43:47,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:47,952 INFO L225 Difference]: With dead ends: 510 [2020-11-30 00:43:47,952 INFO L226 Difference]: Without dead ends: 344 [2020-11-30 00:43:47,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:43:47,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-11-30 00:43:47,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 180. [2020-11-30 00:43:47,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-30 00:43:47,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 244 transitions. [2020-11-30 00:43:47,974 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 244 transitions. Word has length 31 [2020-11-30 00:43:47,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:47,974 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 244 transitions. [2020-11-30 00:43:47,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:43:47,975 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 244 transitions. [2020-11-30 00:43:47,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 00:43:47,975 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:47,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:43:47,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:43:47,977 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:47,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:47,977 INFO L82 PathProgramCache]: Analyzing trace with hash 182706832, now seen corresponding path program 1 times [2020-11-30 00:43:47,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:47,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830874496] [2020-11-30 00:43:47,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:43:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:43:48,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830874496] [2020-11-30 00:43:48,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:43:48,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:43:48,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477781585] [2020-11-30 00:43:48,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:43:48,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:43:48,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:43:48,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:43:48,039 INFO L87 Difference]: Start difference. First operand 180 states and 244 transitions. Second operand 3 states. [2020-11-30 00:43:48,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:43:48,086 INFO L93 Difference]: Finished difference Result 442 states and 598 transitions. [2020-11-30 00:43:48,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:43:48,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-11-30 00:43:48,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:43:48,089 INFO L225 Difference]: With dead ends: 442 [2020-11-30 00:43:48,089 INFO L226 Difference]: Without dead ends: 268 [2020-11-30 00:43:48,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:43:48,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-11-30 00:43:48,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2020-11-30 00:43:48,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-11-30 00:43:48,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 354 transitions. [2020-11-30 00:43:48,137 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 354 transitions. Word has length 31 [2020-11-30 00:43:48,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:43:48,138 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 354 transitions. [2020-11-30 00:43:48,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:43:48,138 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 354 transitions. [2020-11-30 00:43:48,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-30 00:43:48,138 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:43:48,139 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] [2020-11-30 00:43:48,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 00:43:48,139 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:43:48,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:43:48,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1930053038, now seen corresponding path program 1 times [2020-11-30 00:43:48,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:43:48,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837252245] [2020-11-30 00:43:48,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:43:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:43:48,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:43:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:43:48,288 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:43:48,353 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:43:48,354 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:43:48,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 00:43:48,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:43:48 BoogieIcfgContainer [2020-11-30 00:43:48,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:43:48,511 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:43:48,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:43:48,511 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:43:48,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:43:45" (3/4) ... [2020-11-30 00:43:48,517 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:43:48,669 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4ae09bad-2a97-48e4-84c0-c9b16f89f759/bin/uautomizer/witness.graphml [2020-11-30 00:43:48,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:43:48,672 INFO L168 Benchmark]: Toolchain (without parser) took 6186.87 ms. Allocated memory was 88.1 MB in the beginning and 157.3 MB in the end (delta: 69.2 MB). Free memory was 57.1 MB in the beginning and 85.1 MB in the end (delta: -28.0 MB). Peak memory consumption was 41.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:48,674 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 88.1 MB. Free memory was 48.1 MB in the beginning and 48.0 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:43:48,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 752.90 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 56.8 MB in the beginning and 87.7 MB in the end (delta: -30.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:48,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.78 ms. Allocated memory is still 121.6 MB. Free memory was 87.7 MB in the beginning and 83.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:48,686 INFO L168 Benchmark]: Boogie Preprocessor took 81.70 ms. Allocated memory is still 121.6 MB. Free memory was 83.5 MB in the beginning and 81.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:48,687 INFO L168 Benchmark]: RCFGBuilder took 1642.51 ms. Allocated memory is still 121.6 MB. Free memory was 81.4 MB in the beginning and 82.6 MB in the end (delta: -1.2 MB). Peak memory consumption was 54.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:48,688 INFO L168 Benchmark]: TraceAbstraction took 3409.38 ms. Allocated memory was 121.6 MB in the beginning and 157.3 MB in the end (delta: 35.7 MB). Free memory was 81.8 MB in the beginning and 98.7 MB in the end (delta: -17.0 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:48,688 INFO L168 Benchmark]: Witness Printer took 159.12 ms. Allocated memory is still 157.3 MB. Free memory was 98.7 MB in the beginning and 85.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:43:48,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 88.1 MB. Free memory was 48.1 MB in the beginning and 48.0 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 752.90 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 56.8 MB in the beginning and 87.7 MB in the end (delta: -30.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 129.78 ms. Allocated memory is still 121.6 MB. Free memory was 87.7 MB in the beginning and 83.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.70 ms. Allocated memory is still 121.6 MB. Free memory was 83.5 MB in the beginning and 81.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1642.51 ms. Allocated memory is still 121.6 MB. Free memory was 81.4 MB in the beginning and 82.6 MB in the end (delta: -1.2 MB). Peak memory consumption was 54.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3409.38 ms. Allocated memory was 121.6 MB in the beginning and 157.3 MB in the end (delta: 35.7 MB). Free memory was 81.8 MB in the beginning and 98.7 MB in the end (delta: -17.0 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. * Witness Printer took 159.12 ms. Allocated memory is still 157.3 MB. Free memory was 98.7 MB in the beginning and 85.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L50] int waterLevel = 1; [L51] int methaneLevelCritical = 0; [L160] int pumpRunning = 0; [L161] int systemActive = 1; [L460] int cleanupTimeShifts = 4; [L754] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L536] int retValue_acc ; [L537] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L977] int retValue_acc ; [L980] retValue_acc = 1 [L981] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L543] tmp = valid_product() [L545] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L392] int splverifierCounter ; [L393] int tmp ; [L394] int tmp___0 ; [L395] int tmp___1 ; [L396] int tmp___2 ; [L399] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L401] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L403] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L409] tmp = __VERIFIER_nondet_int() [L411] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L68] COND TRUE waterLevel < 2 [L69] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L419] tmp___0 = __VERIFIER_nondet_int() [L421] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L80] COND FALSE !(\read(methaneLevelCritical)) [L83] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L429] tmp___2 = __VERIFIER_nondet_int() [L431] COND TRUE \read(tmp___2) [L376] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L168] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L175] COND TRUE \read(systemActive) [L223] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L226] COND FALSE !(\read(pumpRunning)) [L197] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L200] COND TRUE ! pumpRunning [L320] int retValue_acc ; [L321] int tmp ; [L322] int tmp___0 ; [L130] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L133] COND FALSE !(waterLevel < 2) [L137] retValue_acc = 0 [L138] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L326] tmp = isHighWaterSensorDry() [L328] COND FALSE !(\read(tmp)) [L331] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L333] retValue_acc = tmp___0 [L334] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L202] tmp = isHighWaterLevel() [L204] COND TRUE \read(tmp) [L251] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L560] int tmp ; [L561] int tmp___0 ; [L89] int retValue_acc ; [L92] retValue_acc = methaneLevelCritical [L93] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L565] tmp = isMethaneLevelCritical() [L567] COND TRUE \read(tmp) [L275] int retValue_acc ; [L278] retValue_acc = pumpRunning [L279] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L569] tmp___0 = isPumpRunning() [L571] 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_product52.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, 122 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 873 SDtfs, 1371 SDslu, 1164 SDs, 0 SdLazy, 154 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=268occurred 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: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 810 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 10236 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...