./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product33.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_ceca8079-f7c1-4549-bcb0-d50e697b59a6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ceca8079-f7c1-4549-bcb0-d50e697b59a6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ceca8079-f7c1-4549-bcb0-d50e697b59a6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ceca8079-f7c1-4549-bcb0-d50e697b59a6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product33.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ceca8079-f7c1-4549-bcb0-d50e697b59a6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ceca8079-f7c1-4549-bcb0-d50e697b59a6/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 49ee68200af8723d15a4fe21e3a4e6e289306e92 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:13:14,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:13:14,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:13:14,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:13:14,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:13:14,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:13:14,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:13:14,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:13:14,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:13:14,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:13:14,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:13:14,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:13:14,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:13:14,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:13:14,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:13:14,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:13:14,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:13:14,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:13:14,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:13:14,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:13:14,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:13:14,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:13:14,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:13:14,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:13:14,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:13:14,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:13:14,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:13:14,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:13:14,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:13:14,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:13:14,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:13:14,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:13:14,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:13:14,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:13:14,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:13:14,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:13:14,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:13:14,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:13:14,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:13:14,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:13:14,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:13:14,873 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ceca8079-f7c1-4549-bcb0-d50e697b59a6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:13:14,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:13:14,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:13:14,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:13:14,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:13:14,900 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:13:14,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:13:14,901 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:13:14,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:13:14,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:13:14,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:13:14,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:13:14,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:13:14,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:13:14,903 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:13:14,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:13:14,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:13:14,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:13:14,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:13:14,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:13:14,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:13:14,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:13:14,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:13:14,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:13:14,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:13:14,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:13:14,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:13:14,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:13:14,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:13:14,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:13:14,906 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_ceca8079-f7c1-4549-bcb0-d50e697b59a6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ceca8079-f7c1-4549-bcb0-d50e697b59a6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49ee68200af8723d15a4fe21e3a4e6e289306e92 [2020-11-29 20:13:15,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:13:15,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:13:15,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:13:15,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:13:15,238 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:13:15,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ceca8079-f7c1-4549-bcb0-d50e697b59a6/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product33.cil.c [2020-11-29 20:13:15,331 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ceca8079-f7c1-4549-bcb0-d50e697b59a6/bin/uautomizer/data/6238d3daf/3e5a6e9cdfa3430999d2c5998bf74b67/FLAG1f7c09507 [2020-11-29 20:13:15,952 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:13:15,953 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ceca8079-f7c1-4549-bcb0-d50e697b59a6/sv-benchmarks/c/product-lines/minepump_spec1_product33.cil.c [2020-11-29 20:13:15,975 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ceca8079-f7c1-4549-bcb0-d50e697b59a6/bin/uautomizer/data/6238d3daf/3e5a6e9cdfa3430999d2c5998bf74b67/FLAG1f7c09507 [2020-11-29 20:13:16,261 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ceca8079-f7c1-4549-bcb0-d50e697b59a6/bin/uautomizer/data/6238d3daf/3e5a6e9cdfa3430999d2c5998bf74b67 [2020-11-29 20:13:16,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:13:16,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:13:16,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:13:16,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:13:16,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:13:16,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:13:16" (1/1) ... [2020-11-29 20:13:16,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633ab736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:16, skipping insertion in model container [2020-11-29 20:13:16,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:13:16" (1/1) ... [2020-11-29 20:13:16,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:13:16,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:13:16,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:13:16,637 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:13:16,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:13:16,816 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:13:16,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:16 WrapperNode [2020-11-29 20:13:16,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:13:16,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:13:16,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:13:16,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:13:16,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:16" (1/1) ... [2020-11-29 20:13:16,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:16" (1/1) ... [2020-11-29 20:13:16,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:13:16,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:13:16,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:13:16,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:13:16,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:16" (1/1) ... [2020-11-29 20:13:16,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:16" (1/1) ... [2020-11-29 20:13:16,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:16" (1/1) ... [2020-11-29 20:13:16,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:16" (1/1) ... [2020-11-29 20:13:16,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:16" (1/1) ... [2020-11-29 20:13:16,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:16" (1/1) ... [2020-11-29 20:13:16,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:16" (1/1) ... [2020-11-29 20:13:16,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:13:16,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:13:16,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:13:16,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:13:16,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ceca8079-f7c1-4549-bcb0-d50e697b59a6/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 20:13:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:13:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:13:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:13:17,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:13:18,026 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:13:18,026 INFO L298 CfgBuilder]: Removed 102 assume(true) statements. [2020-11-29 20:13:18,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:13:18 BoogieIcfgContainer [2020-11-29 20:13:18,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:13:18,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:13:18,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:13:18,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:13:18,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:13:16" (1/3) ... [2020-11-29 20:13:18,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cebdb33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:13:18, skipping insertion in model container [2020-11-29 20:13:18,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:13:16" (2/3) ... [2020-11-29 20:13:18,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cebdb33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:13:18, skipping insertion in model container [2020-11-29 20:13:18,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:13:18" (3/3) ... [2020-11-29 20:13:18,043 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2020-11-29 20:13:18,055 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:13:18,060 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-29 20:13:18,073 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-29 20:13:18,134 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:13:18,134 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:13:18,134 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:13:18,134 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:13:18,134 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:13:18,135 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:13:18,135 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:13:18,135 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:13:18,164 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-11-29 20:13:18,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:13:18,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:18,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:13:18,174 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:13:18,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:18,183 INFO L82 PathProgramCache]: Analyzing trace with hash 2080133685, now seen corresponding path program 1 times [2020-11-29 20:13:18,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:18,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172720439] [2020-11-29 20:13:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:18,531 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 20:13:18,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172720439] [2020-11-29 20:13:18,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:18,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:13:18,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074510315] [2020-11-29 20:13:18,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:13:18,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:18,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:13:18,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:13:18,559 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 2 states. [2020-11-29 20:13:18,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:18,602 INFO L93 Difference]: Finished difference Result 153 states and 230 transitions. [2020-11-29 20:13:18,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:13:18,603 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-29 20:13:18,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:18,617 INFO L225 Difference]: With dead ends: 153 [2020-11-29 20:13:18,617 INFO L226 Difference]: Without dead ends: 74 [2020-11-29 20:13:18,633 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 20:13:18,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-29 20:13:18,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-29 20:13:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-29 20:13:18,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2020-11-29 20:13:18,679 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2020-11-29 20:13:18,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:18,680 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-11-29 20:13:18,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:13:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2020-11-29 20:13:18,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 20:13:18,682 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:18,682 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 20:13:18,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:13:18,684 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:13:18,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:18,687 INFO L82 PathProgramCache]: Analyzing trace with hash 220788147, now seen corresponding path program 1 times [2020-11-29 20:13:18,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:18,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908733273] [2020-11-29 20:13:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:18,855 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 20:13:18,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908733273] [2020-11-29 20:13:18,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:18,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:13:18,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824741761] [2020-11-29 20:13:18,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:13:18,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:18,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:13:18,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:13:18,859 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 3 states. [2020-11-29 20:13:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:18,873 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2020-11-29 20:13:18,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:13:18,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-29 20:13:18,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:18,878 INFO L225 Difference]: With dead ends: 74 [2020-11-29 20:13:18,878 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 20:13:18,879 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 20:13:18,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 20:13:18,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-29 20:13:18,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-29 20:13:18,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2020-11-29 20:13:18,884 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2020-11-29 20:13:18,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:18,884 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2020-11-29 20:13:18,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:13:18,885 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2020-11-29 20:13:18,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 20:13:18,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:18,886 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 20:13:18,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:13:18,886 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:13:18,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:18,887 INFO L82 PathProgramCache]: Analyzing trace with hash 670124178, now seen corresponding path program 1 times [2020-11-29 20:13:18,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:18,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918968595] [2020-11-29 20:13:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:18,998 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 20:13:18,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918968595] [2020-11-29 20:13:18,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:18,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:13:18,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329748019] [2020-11-29 20:13:18,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:13:19,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:19,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:13:19,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:13:19,001 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 3 states. [2020-11-29 20:13:19,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:19,011 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2020-11-29 20:13:19,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:13:19,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-29 20:13:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:19,015 INFO L225 Difference]: With dead ends: 62 [2020-11-29 20:13:19,015 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 20:13:19,016 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 20:13:19,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 20:13:19,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-29 20:13:19,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-29 20:13:19,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2020-11-29 20:13:19,027 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2020-11-29 20:13:19,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:19,027 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2020-11-29 20:13:19,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:13:19,028 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2020-11-29 20:13:19,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 20:13:19,028 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:19,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:13:19,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:13:19,031 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:13:19,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:19,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1804645939, now seen corresponding path program 1 times [2020-11-29 20:13:19,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:19,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313774057] [2020-11-29 20:13:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:19,093 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 20:13:19,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313774057] [2020-11-29 20:13:19,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:19,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:13:19,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885698581] [2020-11-29 20:13:19,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:13:19,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:19,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:13:19,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:13:19,096 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 3 states. [2020-11-29 20:13:19,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:19,123 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2020-11-29 20:13:19,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:13:19,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-29 20:13:19,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:19,124 INFO L225 Difference]: With dead ends: 83 [2020-11-29 20:13:19,124 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 20:13:19,125 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 20:13:19,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 20:13:19,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-11-29 20:13:19,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-29 20:13:19,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2020-11-29 20:13:19,139 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2020-11-29 20:13:19,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:19,140 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2020-11-29 20:13:19,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:13:19,140 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2020-11-29 20:13:19,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 20:13:19,142 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:19,142 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] [2020-11-29 20:13:19,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:13:19,143 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:13:19,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:19,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1746371458, now seen corresponding path program 1 times [2020-11-29 20:13:19,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:19,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727482742] [2020-11-29 20:13:19,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:19,278 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 20:13:19,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727482742] [2020-11-29 20:13:19,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:19,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:13:19,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449589802] [2020-11-29 20:13:19,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:13:19,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:19,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:13:19,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:13:19,281 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand 5 states. [2020-11-29 20:13:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:19,366 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2020-11-29 20:13:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:13:19,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-11-29 20:13:19,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:19,368 INFO L225 Difference]: With dead ends: 139 [2020-11-29 20:13:19,369 INFO L226 Difference]: Without dead ends: 92 [2020-11-29 20:13:19,369 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 20:13:19,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-29 20:13:19,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-11-29 20:13:19,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 20:13:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2020-11-29 20:13:19,377 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2020-11-29 20:13:19,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:19,377 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2020-11-29 20:13:19,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:13:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2020-11-29 20:13:19,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 20:13:19,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:19,378 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] [2020-11-29 20:13:19,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:13:19,379 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:13:19,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:19,379 INFO L82 PathProgramCache]: Analyzing trace with hash 916139585, now seen corresponding path program 1 times [2020-11-29 20:13:19,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:19,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199280413] [2020-11-29 20:13:19,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:19,472 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 20:13:19,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199280413] [2020-11-29 20:13:19,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:19,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:13:19,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555529570] [2020-11-29 20:13:19,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:13:19,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:19,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:13:19,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:13:19,474 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand 5 states. [2020-11-29 20:13:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:19,570 INFO L93 Difference]: Finished difference Result 270 states and 384 transitions. [2020-11-29 20:13:19,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:13:19,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-11-29 20:13:19,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:19,573 INFO L225 Difference]: With dead ends: 270 [2020-11-29 20:13:19,574 INFO L226 Difference]: Without dead ends: 220 [2020-11-29 20:13:19,575 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 20:13:19,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-11-29 20:13:19,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 100. [2020-11-29 20:13:19,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-29 20:13:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 137 transitions. [2020-11-29 20:13:19,601 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 137 transitions. Word has length 29 [2020-11-29 20:13:19,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:19,602 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 137 transitions. [2020-11-29 20:13:19,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:13:19,602 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 137 transitions. [2020-11-29 20:13:19,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 20:13:19,603 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:19,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:13:19,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:13:19,604 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:13:19,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:19,604 INFO L82 PathProgramCache]: Analyzing trace with hash -863305781, now seen corresponding path program 1 times [2020-11-29 20:13:19,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:19,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812005479] [2020-11-29 20:13:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:19,661 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 20:13:19,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812005479] [2020-11-29 20:13:19,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:19,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:13:19,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542730325] [2020-11-29 20:13:19,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:13:19,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:19,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:13:19,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:13:19,663 INFO L87 Difference]: Start difference. First operand 100 states and 137 transitions. Second operand 5 states. [2020-11-29 20:13:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:19,799 INFO L93 Difference]: Finished difference Result 280 states and 386 transitions. [2020-11-29 20:13:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:13:19,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-29 20:13:19,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:19,803 INFO L225 Difference]: With dead ends: 280 [2020-11-29 20:13:19,803 INFO L226 Difference]: Without dead ends: 278 [2020-11-29 20:13:19,803 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 20:13:19,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-11-29 20:13:19,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2020-11-29 20:13:19,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-29 20:13:19,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 136 transitions. [2020-11-29 20:13:19,825 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 136 transitions. Word has length 30 [2020-11-29 20:13:19,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:19,826 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 136 transitions. [2020-11-29 20:13:19,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:13:19,826 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 136 transitions. [2020-11-29 20:13:19,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 20:13:19,828 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:19,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:13:19,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 20:13:19,829 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:13:19,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:19,829 INFO L82 PathProgramCache]: Analyzing trace with hash 376123462, now seen corresponding path program 1 times [2020-11-29 20:13:19,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:19,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860072470] [2020-11-29 20:13:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:19,879 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 20:13:19,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860072470] [2020-11-29 20:13:19,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:19,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:13:19,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973650916] [2020-11-29 20:13:19,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:13:19,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:19,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:13:19,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:13:19,881 INFO L87 Difference]: Start difference. First operand 100 states and 136 transitions. Second operand 5 states. [2020-11-29 20:13:19,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:19,941 INFO L93 Difference]: Finished difference Result 276 states and 374 transitions. [2020-11-29 20:13:19,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:13:19,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-29 20:13:19,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:19,942 INFO L225 Difference]: With dead ends: 276 [2020-11-29 20:13:19,942 INFO L226 Difference]: Without dead ends: 182 [2020-11-29 20:13:19,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:13:19,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-29 20:13:19,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 104. [2020-11-29 20:13:19,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-29 20:13:19,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 140 transitions. [2020-11-29 20:13:19,954 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 140 transitions. Word has length 30 [2020-11-29 20:13:19,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:19,955 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 140 transitions. [2020-11-29 20:13:19,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:13:19,955 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 140 transitions. [2020-11-29 20:13:19,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 20:13:19,959 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:19,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:13:19,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 20:13:19,961 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:13:19,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:19,962 INFO L82 PathProgramCache]: Analyzing trace with hash 634288900, now seen corresponding path program 1 times [2020-11-29 20:13:19,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:19,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105239288] [2020-11-29 20:13:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:13:20,023 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 20:13:20,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105239288] [2020-11-29 20:13:20,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:13:20,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:13:20,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079130711] [2020-11-29 20:13:20,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:13:20,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:13:20,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:13:20,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:13:20,025 INFO L87 Difference]: Start difference. First operand 104 states and 140 transitions. Second operand 3 states. [2020-11-29 20:13:20,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:13:20,057 INFO L93 Difference]: Finished difference Result 250 states and 336 transitions. [2020-11-29 20:13:20,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:13:20,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-11-29 20:13:20,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:13:20,059 INFO L225 Difference]: With dead ends: 250 [2020-11-29 20:13:20,059 INFO L226 Difference]: Without dead ends: 152 [2020-11-29 20:13:20,060 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 20:13:20,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-11-29 20:13:20,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-11-29 20:13:20,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-29 20:13:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 198 transitions. [2020-11-29 20:13:20,076 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 198 transitions. Word has length 30 [2020-11-29 20:13:20,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:13:20,077 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 198 transitions. [2020-11-29 20:13:20,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:13:20,077 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 198 transitions. [2020-11-29 20:13:20,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 20:13:20,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:13:20,079 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 20:13:20,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 20:13:20,079 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:13:20,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:13:20,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1373527294, now seen corresponding path program 1 times [2020-11-29 20:13:20,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:13:20,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052180538] [2020-11-29 20:13:20,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:13:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:13:20,145 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:13:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:13:20,202 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:13:20,241 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:13:20,241 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:13:20,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 20:13:20,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:13:20 BoogieIcfgContainer [2020-11-29 20:13:20,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:13:20,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:13:20,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:13:20,352 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:13:20,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:13:18" (3/4) ... [2020-11-29 20:13:20,355 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:13:20,462 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ceca8079-f7c1-4549-bcb0-d50e697b59a6/bin/uautomizer/witness.graphml [2020-11-29 20:13:20,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:13:20,465 INFO L168 Benchmark]: Toolchain (without parser) took 4198.19 ms. Allocated memory was 107.0 MB in the beginning and 144.7 MB in the end (delta: 37.7 MB). Free memory was 80.5 MB in the beginning and 99.8 MB in the end (delta: -19.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:13:20,465 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 39.7 MB in the beginning and 39.6 MB in the end (delta: 55.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:13:20,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 549.73 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 74.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:13:20,467 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.51 ms. Allocated memory is still 107.0 MB. Free memory was 74.4 MB in the beginning and 71.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:13:20,467 INFO L168 Benchmark]: Boogie Preprocessor took 65.79 ms. Allocated memory is still 107.0 MB. Free memory was 71.3 MB in the beginning and 69.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:13:20,468 INFO L168 Benchmark]: RCFGBuilder took 1068.57 ms. Allocated memory is still 107.0 MB. Free memory was 69.2 MB in the beginning and 49.2 MB in the end (delta: 20.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:13:20,468 INFO L168 Benchmark]: TraceAbstraction took 2321.28 ms. Allocated memory was 107.0 MB in the beginning and 144.7 MB in the end (delta: 37.7 MB). Free memory was 49.2 MB in the beginning and 113.4 MB in the end (delta: -64.3 MB). Peak memory consumption was 48.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:13:20,470 INFO L168 Benchmark]: Witness Printer took 110.84 ms. Allocated memory is still 144.7 MB. Free memory was 112.4 MB in the beginning and 99.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:13:20,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 39.7 MB in the beginning and 39.6 MB in the end (delta: 55.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 549.73 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 74.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.51 ms. Allocated memory is still 107.0 MB. Free memory was 74.4 MB in the beginning and 71.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.79 ms. Allocated memory is still 107.0 MB. Free memory was 71.3 MB in the beginning and 69.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1068.57 ms. Allocated memory is still 107.0 MB. Free memory was 69.2 MB in the beginning and 49.2 MB in the end (delta: 20.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2321.28 ms. Allocated memory was 107.0 MB in the beginning and 144.7 MB in the end (delta: 37.7 MB). Free memory was 49.2 MB in the beginning and 113.4 MB in the end (delta: -64.3 MB). Peak memory consumption was 48.9 MB. Max. memory is 16.1 GB. * Witness Printer took 110.84 ms. Allocated memory is still 144.7 MB. Free memory was 112.4 MB in the beginning and 99.8 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: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L426] int pumpRunning = 0; [L427] int systemActive = 1; [L685] int cleanupTimeShifts = 4; [L808] int waterLevel = 1; [L809] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L758] int retValue_acc ; [L759] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L676] int retValue_acc ; [L679] retValue_acc = 1 [L680] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L765] tmp = valid_product() [L767] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L583] int splverifierCounter ; [L584] int tmp ; [L585] int tmp___0 ; [L586] int tmp___1 ; [L587] int tmp___2 ; [L590] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L592] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L594] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L600] tmp = __VERIFIER_nondet_int() [L602] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L826] COND TRUE waterLevel < 2 [L827] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L610] tmp___0 = __VERIFIER_nondet_int() [L612] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L838] COND FALSE !(\read(methaneLevelCritical)) [L841] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L620] tmp___2 = __VERIFIER_nondet_int() [L622] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L434] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L441] COND TRUE \read(systemActive) [L463] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L466] COND TRUE ! pumpRunning [L560] int retValue_acc ; [L561] int tmp ; [L562] int tmp___0 ; [L888] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L891] COND FALSE !(waterLevel < 2) [L895] retValue_acc = 0 [L896] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L566] tmp = isHighWaterSensorDry() [L568] COND FALSE !(\read(tmp)) [L571] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L573] retValue_acc = tmp___0 [L574] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L468] tmp = isHighWaterLevel() [L470] COND TRUE \read(tmp) [L491] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L782] int tmp ; [L783] int tmp___0 ; [L847] int retValue_acc ; [L850] retValue_acc = methaneLevelCritical [L851] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L787] tmp = isMethaneLevelCritical() [L789] COND TRUE \read(tmp) [L515] int retValue_acc ; [L518] retValue_acc = pumpRunning [L519] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L791] tmp___0 = isPumpRunning() [L793] 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_product33.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, 81 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 577 SDtfs, 704 SDslu, 767 SDs, 0 SdLazy, 102 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 414 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 257 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 12233 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...