./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/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 78c3727bd3b2d1a7a3f467704564f87e93e64a9d .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:56:20,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:20,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:20,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:20,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:20,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:20,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:20,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:20,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:20,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:20,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:20,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:20,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:20,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:20,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:20,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:20,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:20,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:20,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:20,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:20,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:20,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:20,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:20,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:20,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:20,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:20,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:20,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:20,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:20,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:20,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:20,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:20,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:20,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:20,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:20,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:20,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:20,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:20,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:20,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:20,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:20,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:56:20,843 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:20,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:20,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:20,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:20,845 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:20,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:20,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:20,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:20,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:20,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:20,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:56:20,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:20,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:56:20,847 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:20,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:20,847 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:20,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:56:20,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:20,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:20,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:20,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:20,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:20,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:20,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:20,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:56:20,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:20,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:20,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:56:20,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:20,850 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_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78c3727bd3b2d1a7a3f467704564f87e93e64a9d [2020-11-28 02:56:21,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:21,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:21,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:21,143 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:21,145 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:21,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c [2020-11-28 02:56:21,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/bin/uautomizer/data/e1f12c9cf/879d44c4a5bb4264b34647fb6e62dff3/FLAGec2ffc532 [2020-11-28 02:56:21,791 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:21,792 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/sv-benchmarks/c/product-lines/minepump_spec1_product40.cil.c [2020-11-28 02:56:21,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/bin/uautomizer/data/e1f12c9cf/879d44c4a5bb4264b34647fb6e62dff3/FLAGec2ffc532 [2020-11-28 02:56:22,112 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/bin/uautomizer/data/e1f12c9cf/879d44c4a5bb4264b34647fb6e62dff3 [2020-11-28 02:56:22,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:22,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:22,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:22,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:22,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:22,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d2fe484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22, skipping insertion in model container [2020-11-28 02:56:22,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:22,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:22,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:22,612 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:22,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:22,751 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:22,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22 WrapperNode [2020-11-28 02:56:22,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:22,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:22,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:22,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:22,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:22,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:22,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:22,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:22,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:22,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:22,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:22,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:22,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/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 02:56:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:22,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:56:22,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:22,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:24,084 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:24,090 INFO L298 CfgBuilder]: Removed 168 assume(true) statements. [2020-11-28 02:56:24,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:24 BoogieIcfgContainer [2020-11-28 02:56:24,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:24,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:24,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:24,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:24,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:22" (1/3) ... [2020-11-28 02:56:24,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb3ead1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:24, skipping insertion in model container [2020-11-28 02:56:24,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (2/3) ... [2020-11-28 02:56:24,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb3ead1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:24, skipping insertion in model container [2020-11-28 02:56:24,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:24" (3/3) ... [2020-11-28 02:56:24,106 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product40.cil.c [2020-11-28 02:56:24,122 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:24,127 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 02:56:24,141 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 02:56:24,189 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:24,189 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:56:24,189 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:24,189 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:24,190 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:24,190 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:24,190 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:24,190 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:24,219 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-11-28 02:56:24,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:56:24,225 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:24,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:24,226 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:24,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:24,232 INFO L82 PathProgramCache]: Analyzing trace with hash -515765374, now seen corresponding path program 1 times [2020-11-28 02:56:24,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:24,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80958977] [2020-11-28 02:56:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:24,512 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 02:56:24,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80958977] [2020-11-28 02:56:24,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:24,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:24,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437773396] [2020-11-28 02:56:24,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:56:24,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:24,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:56:24,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:56:24,539 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 2 states. [2020-11-28 02:56:24,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:24,600 INFO L93 Difference]: Finished difference Result 223 states and 338 transitions. [2020-11-28 02:56:24,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:56:24,602 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-28 02:56:24,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:24,616 INFO L225 Difference]: With dead ends: 223 [2020-11-28 02:56:24,617 INFO L226 Difference]: Without dead ends: 109 [2020-11-28 02:56:24,625 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 02:56:24,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-28 02:56:24,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-28 02:56:24,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-28 02:56:24,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-11-28 02:56:24,686 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2020-11-28 02:56:24,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:24,687 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-11-28 02:56:24,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:56:24,688 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-11-28 02:56:24,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:56:24,692 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:24,693 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 02:56:24,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:24,694 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:24,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:24,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1562522271, now seen corresponding path program 1 times [2020-11-28 02:56:24,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:24,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610692173] [2020-11-28 02:56:24,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:24,801 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 02:56:24,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610692173] [2020-11-28 02:56:24,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:24,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:24,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467825192] [2020-11-28 02:56:24,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:24,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:24,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:24,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:24,805 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2020-11-28 02:56:24,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:24,821 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2020-11-28 02:56:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:24,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-28 02:56:24,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:24,822 INFO L225 Difference]: With dead ends: 109 [2020-11-28 02:56:24,822 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 02:56:24,823 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 02:56:24,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 02:56:24,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-28 02:56:24,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 02:56:24,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-11-28 02:56:24,834 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-11-28 02:56:24,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:24,835 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-11-28 02:56:24,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:24,835 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-11-28 02:56:24,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:56:24,837 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:24,837 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 02:56:24,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:56:24,839 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:24,839 INFO L82 PathProgramCache]: Analyzing trace with hash 109011716, now seen corresponding path program 1 times [2020-11-28 02:56:24,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:24,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284365696] [2020-11-28 02:56:24,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:24,994 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 02:56:24,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284365696] [2020-11-28 02:56:24,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:24,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:56:24,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505241696] [2020-11-28 02:56:24,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:24,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:24,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:24,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:24,996 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 5 states. [2020-11-28 02:56:25,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:25,096 INFO L93 Difference]: Finished difference Result 111 states and 164 transitions. [2020-11-28 02:56:25,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:25,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-28 02:56:25,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:25,098 INFO L225 Difference]: With dead ends: 111 [2020-11-28 02:56:25,100 INFO L226 Difference]: Without dead ends: 70 [2020-11-28 02:56:25,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-28 02:56:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2020-11-28 02:56:25,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-28 02:56:25,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2020-11-28 02:56:25,119 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 22 [2020-11-28 02:56:25,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:25,120 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2020-11-28 02:56:25,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2020-11-28 02:56:25,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 02:56:25,122 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:25,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:25,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:56:25,122 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:25,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:25,123 INFO L82 PathProgramCache]: Analyzing trace with hash 60563277, now seen corresponding path program 1 times [2020-11-28 02:56:25,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:25,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930420094] [2020-11-28 02:56:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:25,234 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 02:56:25,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930420094] [2020-11-28 02:56:25,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:25,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:25,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945731650] [2020-11-28 02:56:25,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:25,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:25,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:25,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:25,237 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand 3 states. [2020-11-28 02:56:25,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:25,299 INFO L93 Difference]: Finished difference Result 147 states and 218 transitions. [2020-11-28 02:56:25,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:25,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-28 02:56:25,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:25,301 INFO L225 Difference]: With dead ends: 147 [2020-11-28 02:56:25,301 INFO L226 Difference]: Without dead ends: 87 [2020-11-28 02:56:25,302 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 02:56:25,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-28 02:56:25,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-11-28 02:56:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-28 02:56:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2020-11-28 02:56:25,317 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 24 [2020-11-28 02:56:25,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:25,317 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2020-11-28 02:56:25,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2020-11-28 02:56:25,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:56:25,320 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:25,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:25,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:56:25,320 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:25,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:25,321 INFO L82 PathProgramCache]: Analyzing trace with hash -445763815, now seen corresponding path program 1 times [2020-11-28 02:56:25,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:25,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106709035] [2020-11-28 02:56:25,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:25,455 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 02:56:25,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106709035] [2020-11-28 02:56:25,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:25,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:25,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259370352] [2020-11-28 02:56:25,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:25,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:25,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:25,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:25,457 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand 5 states. [2020-11-28 02:56:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:25,613 INFO L93 Difference]: Finished difference Result 413 states and 601 transitions. [2020-11-28 02:56:25,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:56:25,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-28 02:56:25,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:25,616 INFO L225 Difference]: With dead ends: 413 [2020-11-28 02:56:25,617 INFO L226 Difference]: Without dead ends: 334 [2020-11-28 02:56:25,618 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 02:56:25,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-11-28 02:56:25,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 156. [2020-11-28 02:56:25,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-11-28 02:56:25,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 220 transitions. [2020-11-28 02:56:25,643 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 220 transitions. Word has length 25 [2020-11-28 02:56:25,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:25,643 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 220 transitions. [2020-11-28 02:56:25,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:25,643 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 220 transitions. [2020-11-28 02:56:25,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 02:56:25,648 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:25,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:25,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:56:25,649 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:25,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:25,649 INFO L82 PathProgramCache]: Analyzing trace with hash -649570909, now seen corresponding path program 1 times [2020-11-28 02:56:25,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:25,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933560596] [2020-11-28 02:56:25,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:25,738 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 02:56:25,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933560596] [2020-11-28 02:56:25,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:25,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:25,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128585183] [2020-11-28 02:56:25,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:25,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:25,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:25,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:25,740 INFO L87 Difference]: Start difference. First operand 156 states and 220 transitions. Second operand 5 states. [2020-11-28 02:56:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:25,889 INFO L93 Difference]: Finished difference Result 436 states and 619 transitions. [2020-11-28 02:56:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:56:25,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-28 02:56:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:25,893 INFO L225 Difference]: With dead ends: 436 [2020-11-28 02:56:25,893 INFO L226 Difference]: Without dead ends: 434 [2020-11-28 02:56:25,894 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 02:56:25,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-11-28 02:56:25,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 156. [2020-11-28 02:56:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-11-28 02:56:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 218 transitions. [2020-11-28 02:56:25,912 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 218 transitions. Word has length 26 [2020-11-28 02:56:25,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:25,913 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 218 transitions. [2020-11-28 02:56:25,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:25,913 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 218 transitions. [2020-11-28 02:56:25,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 02:56:25,914 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:25,914 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 02:56:25,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:56:25,914 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:25,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:25,915 INFO L82 PathProgramCache]: Analyzing trace with hash 108971892, now seen corresponding path program 1 times [2020-11-28 02:56:25,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:25,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424718100] [2020-11-28 02:56:25,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:25,990 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 02:56:25,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424718100] [2020-11-28 02:56:25,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:25,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:56:25,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576708740] [2020-11-28 02:56:25,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:25,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:25,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:25,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:25,992 INFO L87 Difference]: Start difference. First operand 156 states and 218 transitions. Second operand 5 states. [2020-11-28 02:56:26,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:26,080 INFO L93 Difference]: Finished difference Result 468 states and 648 transitions. [2020-11-28 02:56:26,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:26,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-28 02:56:26,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:26,083 INFO L225 Difference]: With dead ends: 468 [2020-11-28 02:56:26,083 INFO L226 Difference]: Without dead ends: 318 [2020-11-28 02:56:26,084 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 02:56:26,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-11-28 02:56:26,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 168. [2020-11-28 02:56:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-11-28 02:56:26,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 230 transitions. [2020-11-28 02:56:26,111 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 230 transitions. Word has length 31 [2020-11-28 02:56:26,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:26,113 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 230 transitions. [2020-11-28 02:56:26,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:26,113 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 230 transitions. [2020-11-28 02:56:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 02:56:26,117 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:26,117 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 02:56:26,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:56:26,117 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:26,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:26,118 INFO L82 PathProgramCache]: Analyzing trace with hash -284055118, now seen corresponding path program 1 times [2020-11-28 02:56:26,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:26,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55497166] [2020-11-28 02:56:26,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:26,207 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 02:56:26,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55497166] [2020-11-28 02:56:26,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:26,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:56:26,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325898472] [2020-11-28 02:56:26,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:26,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:26,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:26,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:26,209 INFO L87 Difference]: Start difference. First operand 168 states and 230 transitions. Second operand 6 states. [2020-11-28 02:56:26,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:26,331 INFO L93 Difference]: Finished difference Result 502 states and 682 transitions. [2020-11-28 02:56:26,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:56:26,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-11-28 02:56:26,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:26,334 INFO L225 Difference]: With dead ends: 502 [2020-11-28 02:56:26,335 INFO L226 Difference]: Without dead ends: 340 [2020-11-28 02:56:26,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:56:26,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-11-28 02:56:26,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 176. [2020-11-28 02:56:26,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-11-28 02:56:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 238 transitions. [2020-11-28 02:56:26,357 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 238 transitions. Word has length 31 [2020-11-28 02:56:26,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:26,357 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 238 transitions. [2020-11-28 02:56:26,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:26,358 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 238 transitions. [2020-11-28 02:56:26,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 02:56:26,358 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:26,359 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 02:56:26,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:56:26,359 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:26,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:26,360 INFO L82 PathProgramCache]: Analyzing trace with hash -25889680, now seen corresponding path program 1 times [2020-11-28 02:56:26,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:26,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714652470] [2020-11-28 02:56:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:26,416 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 02:56:26,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714652470] [2020-11-28 02:56:26,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:26,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:26,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001707319] [2020-11-28 02:56:26,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:56:26,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:26,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:56:26,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:56:26,419 INFO L87 Difference]: Start difference. First operand 176 states and 238 transitions. Second operand 3 states. [2020-11-28 02:56:26,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:26,474 INFO L93 Difference]: Finished difference Result 434 states and 586 transitions. [2020-11-28 02:56:26,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:56:26,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-11-28 02:56:26,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:26,476 INFO L225 Difference]: With dead ends: 434 [2020-11-28 02:56:26,476 INFO L226 Difference]: Without dead ends: 264 [2020-11-28 02:56:26,478 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 02:56:26,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-11-28 02:56:26,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2020-11-28 02:56:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-11-28 02:56:26,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 348 transitions. [2020-11-28 02:56:26,511 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 348 transitions. Word has length 31 [2020-11-28 02:56:26,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:26,512 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 348 transitions. [2020-11-28 02:56:26,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:56:26,512 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 348 transitions. [2020-11-28 02:56:26,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 02:56:26,513 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:26,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:26,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 02:56:26,513 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:26,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:26,514 INFO L82 PathProgramCache]: Analyzing trace with hash -2138649550, now seen corresponding path program 1 times [2020-11-28 02:56:26,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:26,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134009236] [2020-11-28 02:56:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:26,608 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:26,680 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:26,734 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:26,734 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:56:26,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:56:26,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:26 BoogieIcfgContainer [2020-11-28 02:56:26,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:26,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:26,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:26,849 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:26,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:24" (3/4) ... [2020-11-28 02:56:26,853 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 02:56:26,934 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1fcb3c5a-dd9a-4f46-ac03-e054ba20432d/bin/uautomizer/witness.graphml [2020-11-28 02:56:26,934 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:26,936 INFO L168 Benchmark]: Toolchain (without parser) took 4819.07 ms. Allocated memory was 111.1 MB in the beginning and 165.7 MB in the end (delta: 54.5 MB). Free memory was 85.0 MB in the beginning and 68.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 70.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:26,937 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 111.1 MB. Free memory was 66.9 MB in the beginning and 66.8 MB in the end (delta: 51.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:26,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.94 ms. Allocated memory is still 111.1 MB. Free memory was 84.8 MB in the beginning and 77.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:26,938 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.72 ms. Allocated memory is still 111.1 MB. Free memory was 77.8 MB in the beginning and 73.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:26,938 INFO L168 Benchmark]: Boogie Preprocessor took 71.25 ms. Allocated memory is still 111.1 MB. Free memory was 73.9 MB in the beginning and 71.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:26,939 INFO L168 Benchmark]: RCFGBuilder took 1182.48 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 71.4 MB in the beginning and 74.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:26,939 INFO L168 Benchmark]: TraceAbstraction took 2751.90 ms. Allocated memory was 134.2 MB in the beginning and 165.7 MB in the end (delta: 31.5 MB). Free memory was 73.5 MB in the beginning and 80.8 MB in the end (delta: -7.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:26,940 INFO L168 Benchmark]: Witness Printer took 85.85 ms. Allocated memory is still 165.7 MB. Free memory was 80.8 MB in the beginning and 68.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:26,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 111.1 MB. Free memory was 66.9 MB in the beginning and 66.8 MB in the end (delta: 51.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 636.94 ms. Allocated memory is still 111.1 MB. Free memory was 84.8 MB in the beginning and 77.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.72 ms. Allocated memory is still 111.1 MB. Free memory was 77.8 MB in the beginning and 73.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.25 ms. Allocated memory is still 111.1 MB. Free memory was 73.9 MB in the beginning and 71.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1182.48 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 71.4 MB in the beginning and 74.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2751.90 ms. Allocated memory was 134.2 MB in the beginning and 165.7 MB in the end (delta: 31.5 MB). Free memory was 73.5 MB in the beginning and 80.8 MB in the end (delta: -7.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. * Witness Printer took 85.85 ms. Allocated memory is still 165.7 MB. Free memory was 80.8 MB in the beginning and 68.3 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: [L53] int pumpRunning = 0; [L54] int systemActive = 1; [L354] int cleanupTimeShifts = 4; [L666] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L864] int waterLevel = 1; [L865] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L430] int retValue_acc ; [L431] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L479] int retValue_acc ; [L482] retValue_acc = 1 [L483] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L437] tmp = valid_product() [L439] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L259] int splverifierCounter ; [L260] int tmp ; [L261] int tmp___0 ; [L262] int tmp___1 ; [L263] int tmp___2 ; [L266] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L268] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L270] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L276] tmp = __VERIFIER_nondet_int() [L278] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L882] COND TRUE waterLevel < 2 [L883] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L286] tmp___0 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L894] COND FALSE !(\read(methaneLevelCritical)) [L897] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L296] tmp___2 = __VERIFIER_nondet_int() [L298] COND TRUE \read(tmp___2) [L250] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L61] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L68] COND TRUE \read(systemActive) [L116] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L119] COND FALSE !(\read(pumpRunning)) [L90] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L93] COND TRUE ! pumpRunning [L213] int retValue_acc ; [L214] int tmp ; [L215] int tmp___0 ; [L944] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L947] COND FALSE !(waterLevel < 2) [L951] retValue_acc = 0 [L952] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L219] tmp = isHighWaterSensorDry() [L221] COND FALSE !(\read(tmp)) [L224] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L226] retValue_acc = tmp___0 [L227] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L95] tmp = isHighWaterLevel() [L97] COND TRUE \read(tmp) [L144] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L329] int tmp ; [L330] int tmp___0 ; [L903] int retValue_acc ; [L906] retValue_acc = methaneLevelCritical [L907] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L334] tmp = isMethaneLevelCritical() [L336] COND TRUE \read(tmp) [L168] int retValue_acc ; [L171] retValue_acc = pumpRunning [L172] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L338] tmp___0 = isPumpRunning() [L340] 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_product40.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, 116 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 829 SDtfs, 1296 SDslu, 1083 SDs, 0 SdLazy, 160 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=264occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 776 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 10236 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...