./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_87e1836d-8bd5-4eee-87a2-8f486c53233e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_87e1836d-8bd5-4eee-87a2-8f486c53233e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_87e1836d-8bd5-4eee-87a2-8f486c53233e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_87e1836d-8bd5-4eee-87a2-8f486c53233e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product33.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_87e1836d-8bd5-4eee-87a2-8f486c53233e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_87e1836d-8bd5-4eee-87a2-8f486c53233e/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 [2020-11-28 02:56:34,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:34,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:34,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:34,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:34,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:34,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:34,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:34,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:34,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:34,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:34,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:34,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:34,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:34,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:34,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:34,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:34,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:34,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:34,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:34,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:34,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:34,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:34,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:34,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:34,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:34,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:34,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:34,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:34,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:34,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:34,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:34,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:34,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:34,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:34,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:34,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:34,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:34,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:34,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:34,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:34,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_87e1836d-8bd5-4eee-87a2-8f486c53233e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:56:34,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:34,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:34,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:34,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:34,776 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:34,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:34,777 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:34,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:34,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:34,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:34,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:56:34,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:34,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:56:34,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:34,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:34,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:34,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:56:34,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:34,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:34,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:34,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:34,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:34,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:34,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:34,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:56:34,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:34,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:34,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:56:34,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:34,785 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_87e1836d-8bd5-4eee-87a2-8f486c53233e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_87e1836d-8bd5-4eee-87a2-8f486c53233e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49ee68200af8723d15a4fe21e3a4e6e289306e92 [2020-11-28 02:56:35,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:35,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:35,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:35,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:35,166 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:35,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_87e1836d-8bd5-4eee-87a2-8f486c53233e/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product33.cil.c [2020-11-28 02:56:35,253 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87e1836d-8bd5-4eee-87a2-8f486c53233e/bin/uautomizer/data/99d2ecd42/0c3a3b9ee4894f4abc9c4b61755922b9/FLAGc21f040fb [2020-11-28 02:56:35,848 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:35,849 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_87e1836d-8bd5-4eee-87a2-8f486c53233e/sv-benchmarks/c/product-lines/minepump_spec1_product33.cil.c [2020-11-28 02:56:35,864 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87e1836d-8bd5-4eee-87a2-8f486c53233e/bin/uautomizer/data/99d2ecd42/0c3a3b9ee4894f4abc9c4b61755922b9/FLAGc21f040fb [2020-11-28 02:56:36,135 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_87e1836d-8bd5-4eee-87a2-8f486c53233e/bin/uautomizer/data/99d2ecd42/0c3a3b9ee4894f4abc9c4b61755922b9 [2020-11-28 02:56:36,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:36,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:36,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:36,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:36,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:36,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d7b83d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36, skipping insertion in model container [2020-11-28 02:56:36,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:36,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:36,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:36,595 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:36,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:36,732 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:36,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36 WrapperNode [2020-11-28 02:56:36,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:36,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:36,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:36,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:36,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:36,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:36,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:36,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:36,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:36,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:36,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:36,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:36,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87e1836d-8bd5-4eee-87a2-8f486c53233e/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 [2020-11-28 02:56:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:56:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:36,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:37,923 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:37,923 INFO L298 CfgBuilder]: Removed 102 assume(true) statements. [2020-11-28 02:56:37,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:37 BoogieIcfgContainer [2020-11-28 02:56:37,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:37,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:37,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:37,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:37,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:36" (1/3) ... [2020-11-28 02:56:37,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21826e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:37, skipping insertion in model container [2020-11-28 02:56:37,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (2/3) ... [2020-11-28 02:56:37,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21826e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:37, skipping insertion in model container [2020-11-28 02:56:37,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:37" (3/3) ... [2020-11-28 02:56:37,937 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2020-11-28 02:56:37,948 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:37,953 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 02:56:37,965 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 02:56:37,990 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:37,990 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:56:37,990 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:37,991 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:37,991 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:37,991 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:37,991 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:37,991 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:38,006 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-11-28 02:56:38,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:56:38,012 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:38,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:38,013 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:38,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:38,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2080133685, now seen corresponding path program 1 times [2020-11-28 02:56:38,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:38,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883832477] [2020-11-28 02:56:38,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:38,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883832477] [2020-11-28 02:56:38,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:38,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:38,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485121839] [2020-11-28 02:56:38,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:56:38,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:38,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:56:38,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:56:38,408 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 2 states. [2020-11-28 02:56:38,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:38,453 INFO L93 Difference]: Finished difference Result 153 states and 230 transitions. [2020-11-28 02:56:38,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:56:38,455 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-28 02:56:38,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:38,473 INFO L225 Difference]: With dead ends: 153 [2020-11-28 02:56:38,473 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 02:56:38,482 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 [2020-11-28 02:56:38,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 02:56:38,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-28 02:56:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 02:56:38,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2020-11-28 02:56:38,537 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2020-11-28 02:56:38,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:38,538 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-11-28 02:56:38,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:56:38,538 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2020-11-28 02:56:38,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:56:38,539 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:38,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:38,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:38,540 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:38,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:38,541 INFO L82 PathProgramCache]: Analyzing trace with hash 220788147, now seen corresponding path program 1 times [2020-11-28 02:56:38,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:38,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549265784] [2020-11-28 02:56:38,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:38,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549265784] [2020-11-28 02:56:38,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:38,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:38,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996935060] [2020-11-28 02:56:38,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:38,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:38,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:38,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:38,646 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 3 states. [2020-11-28 02:56:38,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:38,660 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2020-11-28 02:56:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:38,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 02:56:38,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:38,662 INFO L225 Difference]: With dead ends: 74 [2020-11-28 02:56:38,662 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 02:56:38,663 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 [2020-11-28 02:56:38,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 02:56:38,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-28 02:56:38,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 02:56:38,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2020-11-28 02:56:38,668 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2020-11-28 02:56:38,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:38,669 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2020-11-28 02:56:38,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:38,669 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2020-11-28 02:56:38,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:56:38,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:38,673 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] [2020-11-28 02:56:38,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:56:38,674 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:38,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:38,675 INFO L82 PathProgramCache]: Analyzing trace with hash 670124178, now seen corresponding path program 1 times [2020-11-28 02:56:38,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:38,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828885322] [2020-11-28 02:56:38,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:38,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828885322] [2020-11-28 02:56:38,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:38,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:38,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482529971] [2020-11-28 02:56:38,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:38,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:38,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:38,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:38,809 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 3 states. [2020-11-28 02:56:38,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:38,817 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2020-11-28 02:56:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:38,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-28 02:56:38,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:38,818 INFO L225 Difference]: With dead ends: 62 [2020-11-28 02:56:38,819 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 02:56:38,819 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 [2020-11-28 02:56:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 02:56:38,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-28 02:56:38,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 02:56:38,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2020-11-28 02:56:38,825 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2020-11-28 02:56:38,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:38,825 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2020-11-28 02:56:38,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:38,826 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2020-11-28 02:56:38,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 02:56:38,827 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:38,827 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] [2020-11-28 02:56:38,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:56:38,827 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:38,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:38,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1804645939, now seen corresponding path program 1 times [2020-11-28 02:56:38,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:38,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660872525] [2020-11-28 02:56:38,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:38,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660872525] [2020-11-28 02:56:38,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:38,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:38,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575375885] [2020-11-28 02:56:38,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:38,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:38,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:38,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:38,922 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 3 states. [2020-11-28 02:56:38,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:38,950 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2020-11-28 02:56:38,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:38,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-28 02:56:38,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:38,951 INFO L225 Difference]: With dead ends: 83 [2020-11-28 02:56:38,952 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 02:56:38,952 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 [2020-11-28 02:56:38,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 02:56:38,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-11-28 02:56:38,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 02:56:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2020-11-28 02:56:38,960 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2020-11-28 02:56:38,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:38,960 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2020-11-28 02:56:38,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2020-11-28 02:56:38,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 02:56:38,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:38,962 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] [2020-11-28 02:56:38,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:56:38,962 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:38,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:38,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1746371458, now seen corresponding path program 1 times [2020-11-28 02:56:38,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:38,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043033707] [2020-11-28 02:56:38,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:39,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043033707] [2020-11-28 02:56:39,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:39,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:56:39,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266385813] [2020-11-28 02:56:39,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:39,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:39,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:39,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:39,055 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand 5 states. [2020-11-28 02:56:39,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:39,155 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2020-11-28 02:56:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:39,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-11-28 02:56:39,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:39,159 INFO L225 Difference]: With dead ends: 139 [2020-11-28 02:56:39,159 INFO L226 Difference]: Without dead ends: 92 [2020-11-28 02:56:39,160 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 [2020-11-28 02:56:39,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-28 02:56:39,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-11-28 02:56:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 02:56:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2020-11-28 02:56:39,178 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2020-11-28 02:56:39,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:39,180 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2020-11-28 02:56:39,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:39,180 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2020-11-28 02:56:39,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 02:56:39,183 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:39,183 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] [2020-11-28 02:56:39,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:56:39,183 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:39,184 INFO L82 PathProgramCache]: Analyzing trace with hash 916139585, now seen corresponding path program 1 times [2020-11-28 02:56:39,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:39,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395979178] [2020-11-28 02:56:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:39,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395979178] [2020-11-28 02:56:39,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:39,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:39,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433032116] [2020-11-28 02:56:39,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:39,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:39,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:39,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:39,306 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand 5 states. [2020-11-28 02:56:39,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:39,436 INFO L93 Difference]: Finished difference Result 270 states and 384 transitions. [2020-11-28 02:56:39,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:56:39,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-11-28 02:56:39,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:39,439 INFO L225 Difference]: With dead ends: 270 [2020-11-28 02:56:39,439 INFO L226 Difference]: Without dead ends: 220 [2020-11-28 02:56:39,440 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 [2020-11-28 02:56:39,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-11-28 02:56:39,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 100. [2020-11-28 02:56:39,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-28 02:56:39,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 137 transitions. [2020-11-28 02:56:39,461 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 137 transitions. Word has length 29 [2020-11-28 02:56:39,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:39,461 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 137 transitions. [2020-11-28 02:56:39,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:39,461 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 137 transitions. [2020-11-28 02:56:39,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 02:56:39,463 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:39,463 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] [2020-11-28 02:56:39,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:56:39,463 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:39,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:39,464 INFO L82 PathProgramCache]: Analyzing trace with hash -863305781, now seen corresponding path program 1 times [2020-11-28 02:56:39,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:39,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688098150] [2020-11-28 02:56:39,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:39,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688098150] [2020-11-28 02:56:39,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:39,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:39,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917601433] [2020-11-28 02:56:39,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:39,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:39,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:39,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:39,555 INFO L87 Difference]: Start difference. First operand 100 states and 137 transitions. Second operand 5 states. [2020-11-28 02:56:39,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:39,683 INFO L93 Difference]: Finished difference Result 280 states and 386 transitions. [2020-11-28 02:56:39,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:56:39,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-28 02:56:39,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:39,686 INFO L225 Difference]: With dead ends: 280 [2020-11-28 02:56:39,686 INFO L226 Difference]: Without dead ends: 278 [2020-11-28 02:56:39,687 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 [2020-11-28 02:56:39,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-11-28 02:56:39,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2020-11-28 02:56:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-28 02:56:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 136 transitions. [2020-11-28 02:56:39,716 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 136 transitions. Word has length 30 [2020-11-28 02:56:39,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:39,717 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 136 transitions. [2020-11-28 02:56:39,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:39,717 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 136 transitions. [2020-11-28 02:56:39,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 02:56:39,719 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:39,719 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] [2020-11-28 02:56:39,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:56:39,719 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:39,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:39,720 INFO L82 PathProgramCache]: Analyzing trace with hash 376123462, now seen corresponding path program 1 times [2020-11-28 02:56:39,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:39,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253624604] [2020-11-28 02:56:39,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:39,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253624604] [2020-11-28 02:56:39,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:39,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:56:39,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413332075] [2020-11-28 02:56:39,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:39,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:39,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:39,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:39,823 INFO L87 Difference]: Start difference. First operand 100 states and 136 transitions. Second operand 5 states. [2020-11-28 02:56:39,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:39,906 INFO L93 Difference]: Finished difference Result 276 states and 374 transitions. [2020-11-28 02:56:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:39,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-28 02:56:39,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:39,908 INFO L225 Difference]: With dead ends: 276 [2020-11-28 02:56:39,908 INFO L226 Difference]: Without dead ends: 182 [2020-11-28 02:56:39,910 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 [2020-11-28 02:56:39,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-28 02:56:39,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 104. [2020-11-28 02:56:39,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-28 02:56:39,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 140 transitions. [2020-11-28 02:56:39,933 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 140 transitions. Word has length 30 [2020-11-28 02:56:39,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:39,933 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 140 transitions. [2020-11-28 02:56:39,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:39,934 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 140 transitions. [2020-11-28 02:56:39,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 02:56:39,936 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:39,937 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] [2020-11-28 02:56:39,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:56:39,938 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:39,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:39,940 INFO L82 PathProgramCache]: Analyzing trace with hash 634288900, now seen corresponding path program 1 times [2020-11-28 02:56:39,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:39,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558459688] [2020-11-28 02:56:39,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:39,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558459688] [2020-11-28 02:56:39,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:39,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:39,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890383397] [2020-11-28 02:56:39,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:39,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:39,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:39,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:40,000 INFO L87 Difference]: Start difference. First operand 104 states and 140 transitions. Second operand 3 states. [2020-11-28 02:56:40,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:40,035 INFO L93 Difference]: Finished difference Result 250 states and 336 transitions. [2020-11-28 02:56:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:40,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-11-28 02:56:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:40,037 INFO L225 Difference]: With dead ends: 250 [2020-11-28 02:56:40,037 INFO L226 Difference]: Without dead ends: 152 [2020-11-28 02:56:40,038 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 [2020-11-28 02:56:40,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-11-28 02:56:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-11-28 02:56:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-28 02:56:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 198 transitions. [2020-11-28 02:56:40,066 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 198 transitions. Word has length 30 [2020-11-28 02:56:40,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:40,067 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 198 transitions. [2020-11-28 02:56:40,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:40,068 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 198 transitions. [2020-11-28 02:56:40,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 02:56:40,072 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:40,072 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] [2020-11-28 02:56:40,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:56:40,073 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:40,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:40,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1373527294, now seen corresponding path program 1 times [2020-11-28 02:56:40,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:40,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864620144] [2020-11-28 02:56:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:40,188 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:40,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:40,321 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:40,321 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:56:40,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:56:40,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:40 BoogieIcfgContainer [2020-11-28 02:56:40,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:40,468 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:40,468 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:40,468 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:40,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:37" (3/4) ... [2020-11-28 02:56:40,471 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 02:56:40,584 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_87e1836d-8bd5-4eee-87a2-8f486c53233e/bin/uautomizer/witness.graphml [2020-11-28 02:56:40,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:40,586 INFO L168 Benchmark]: Toolchain (without parser) took 4445.80 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 74.3 MB in the beginning and 41.2 MB in the end (delta: 33.1 MB). Peak memory consumption was 56.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:40,587 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 111.1 MB. Free memory is still 91.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:40,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 589.91 ms. Allocated memory is still 111.1 MB. Free memory was 74.0 MB in the beginning and 78.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:40,590 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.08 ms. Allocated memory is still 111.1 MB. Free memory was 78.0 MB in the beginning and 74.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:40,591 INFO L168 Benchmark]: Boogie Preprocessor took 38.77 ms. Allocated memory is still 111.1 MB. Free memory was 74.8 MB in the beginning and 72.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:40,591 INFO L168 Benchmark]: RCFGBuilder took 1077.24 ms. Allocated memory is still 111.1 MB. Free memory was 72.8 MB in the beginning and 61.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:40,591 INFO L168 Benchmark]: TraceAbstraction took 2539.56 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 61.1 MB in the beginning and 53.7 MB in the end (delta: 7.3 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:40,592 INFO L168 Benchmark]: Witness Printer took 116.46 ms. Allocated memory is still 134.2 MB. Free memory was 53.7 MB in the beginning and 41.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:40,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 111.1 MB. Free memory is still 91.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 589.91 ms. Allocated memory is still 111.1 MB. Free memory was 74.0 MB in the beginning and 78.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.08 ms. Allocated memory is still 111.1 MB. Free memory was 78.0 MB in the beginning and 74.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.77 ms. Allocated memory is still 111.1 MB. Free memory was 74.8 MB in the beginning and 72.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1077.24 ms. Allocated memory is still 111.1 MB. Free memory was 72.8 MB in the beginning and 61.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2539.56 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 61.1 MB in the beginning and 53.7 MB in the end (delta: 7.3 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.1 GB. * Witness Printer took 116.46 ms. Allocated memory is still 134.2 MB. Free memory was 53.7 MB in the beginning and 41.2 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: 2.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, 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, 0.4s 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...