./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product39.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_0560fb1c-1b0a-4c63-963a-8a9a98965268/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0560fb1c-1b0a-4c63-963a-8a9a98965268/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0560fb1c-1b0a-4c63-963a-8a9a98965268/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0560fb1c-1b0a-4c63-963a-8a9a98965268/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product39.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0560fb1c-1b0a-4c63-963a-8a9a98965268/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0560fb1c-1b0a-4c63-963a-8a9a98965268/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 dac33dda1b1afd5a9a188848bdc9374832c4af5e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:31:53,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:31:53,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:31:53,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:31:53,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:31:53,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:31:53,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:31:53,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:31:53,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:31:53,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:31:53,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:31:53,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:31:53,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:31:53,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:31:53,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:31:53,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:31:53,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:31:53,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:31:53,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:31:53,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:31:53,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:31:53,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:31:53,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:31:53,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:31:53,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:31:53,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:31:53,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:31:53,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:31:53,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:31:53,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:31:53,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:31:53,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:31:53,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:31:53,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:31:53,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:31:53,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:31:53,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:31:53,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:31:53,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:31:53,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:31:53,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:31:53,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0560fb1c-1b0a-4c63-963a-8a9a98965268/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:31:53,937 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:31:53,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:31:53,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:31:53,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:31:53,939 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:31:53,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:31:53,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:31:53,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:31:53,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:31:53,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:31:53,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:31:53,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:31:53,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:31:53,941 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:31:53,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:31:53,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:31:53,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:31:53,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:31:53,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:31:53,943 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:31:53,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:31:53,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:31:53,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:31:53,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:31:53,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:31:53,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:31:53,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:31:53,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:31:53,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:31:53,945 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_0560fb1c-1b0a-4c63-963a-8a9a98965268/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0560fb1c-1b0a-4c63-963a-8a9a98965268/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dac33dda1b1afd5a9a188848bdc9374832c4af5e [2020-11-30 01:31:54,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:31:54,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:31:54,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:31:54,299 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:31:54,301 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:31:54,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0560fb1c-1b0a-4c63-963a-8a9a98965268/bin/uautomizer/../../sv-benchmarks/c/product-lines/minepump_spec1_product39.cil.c [2020-11-30 01:31:54,394 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0560fb1c-1b0a-4c63-963a-8a9a98965268/bin/uautomizer/data/d784444ce/b1d4c8d2913c4080a149b1bdd8921611/FLAG1b95adf26 [2020-11-30 01:31:54,995 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:31:54,995 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0560fb1c-1b0a-4c63-963a-8a9a98965268/sv-benchmarks/c/product-lines/minepump_spec1_product39.cil.c [2020-11-30 01:31:55,010 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0560fb1c-1b0a-4c63-963a-8a9a98965268/bin/uautomizer/data/d784444ce/b1d4c8d2913c4080a149b1bdd8921611/FLAG1b95adf26 [2020-11-30 01:31:55,294 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0560fb1c-1b0a-4c63-963a-8a9a98965268/bin/uautomizer/data/d784444ce/b1d4c8d2913c4080a149b1bdd8921611 [2020-11-30 01:31:55,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:31:55,299 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:31:55,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:31:55,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:31:55,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:31:55,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:31:55" (1/1) ... [2020-11-30 01:31:55,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d588f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:31:55, skipping insertion in model container [2020-11-30 01:31:55,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:31:55" (1/1) ... [2020-11-30 01:31:55,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:31:55,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:31:55,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:31:55,765 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:31:55,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:31:55,891 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:31:55,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:31:55 WrapperNode [2020-11-30 01:31:55,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:31:55,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:31:55,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:31:55,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:31:55,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:31:55" (1/1) ... [2020-11-30 01:31:55,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:31:55" (1/1) ... [2020-11-30 01:31:56,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:31:56,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:31:56,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:31:56,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:31:56,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:31:55" (1/1) ... [2020-11-30 01:31:56,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:31:55" (1/1) ... [2020-11-30 01:31:56,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:31:55" (1/1) ... [2020-11-30 01:31:56,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:31:55" (1/1) ... [2020-11-30 01:31:56,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:31:55" (1/1) ... [2020-11-30 01:31:56,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:31:55" (1/1) ... [2020-11-30 01:31:56,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:31:55" (1/1) ... [2020-11-30 01:31:56,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:31:56,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:31:56,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:31:56,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:31:56,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:31:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0560fb1c-1b0a-4c63-963a-8a9a98965268/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:31:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:31:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:31:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:31:56,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:31:57,242 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:31:57,243 INFO L298 CfgBuilder]: Removed 166 assume(true) statements. [2020-11-30 01:31:57,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:31:57 BoogieIcfgContainer [2020-11-30 01:31:57,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:31:57,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:31:57,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:31:57,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:31:57,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:31:55" (1/3) ... [2020-11-30 01:31:57,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed1e1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:31:57, skipping insertion in model container [2020-11-30 01:31:57,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:31:55" (2/3) ... [2020-11-30 01:31:57,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed1e1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:31:57, skipping insertion in model container [2020-11-30 01:31:57,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:31:57" (3/3) ... [2020-11-30 01:31:57,260 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product39.cil.c [2020-11-30 01:31:57,275 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:31:57,281 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-30 01:31:57,296 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-30 01:31:57,341 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:31:57,341 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:31:57,341 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:31:57,341 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:31:57,341 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:31:57,342 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:31:57,342 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:31:57,342 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:31:57,376 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-11-30 01:31:57,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 01:31:57,383 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:31:57,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:31:57,385 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:31:57,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:31:57,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1368208383, now seen corresponding path program 1 times [2020-11-30 01:31:57,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:31:57,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816137790] [2020-11-30 01:31:57,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:31:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:31:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:31:57,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816137790] [2020-11-30 01:31:57,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:31:57,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:31:57,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169317154] [2020-11-30 01:31:57,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:31:57,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:31:57,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:31:57,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:31:57,811 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 2 states. [2020-11-30 01:31:57,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:31:57,878 INFO L93 Difference]: Finished difference Result 223 states and 338 transitions. [2020-11-30 01:31:57,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:31:57,879 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-30 01:31:57,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:31:57,898 INFO L225 Difference]: With dead ends: 223 [2020-11-30 01:31:57,898 INFO L226 Difference]: Without dead ends: 109 [2020-11-30 01:31:57,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:31:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-30 01:31:57,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-30 01:31:57,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-30 01:31:57,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-11-30 01:31:57,964 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2020-11-30 01:31:57,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:31:57,965 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-11-30 01:31:57,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:31:57,965 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-11-30 01:31:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:31:57,966 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:31:57,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:31:57,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:31:57,967 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:31:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:31:57,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1880002016, now seen corresponding path program 1 times [2020-11-30 01:31:57,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:31:57,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913578148] [2020-11-30 01:31:57,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:31:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:31:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:31:58,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913578148] [2020-11-30 01:31:58,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:31:58,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:31:58,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091622179] [2020-11-30 01:31:58,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:31:58,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:31:58,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:31:58,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:31:58,123 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2020-11-30 01:31:58,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:31:58,135 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2020-11-30 01:31:58,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:31:58,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-30 01:31:58,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:31:58,137 INFO L225 Difference]: With dead ends: 109 [2020-11-30 01:31:58,137 INFO L226 Difference]: Without dead ends: 47 [2020-11-30 01:31:58,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:31:58,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-30 01:31:58,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-30 01:31:58,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 01:31:58,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-11-30 01:31:58,146 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-11-30 01:31:58,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:31:58,146 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-11-30 01:31:58,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:31:58,147 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-11-30 01:31:58,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:31:58,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:31:58,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:31:58,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:31:58,148 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:31:58,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:31:58,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1744081540, now seen corresponding path program 1 times [2020-11-30 01:31:58,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:31:58,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065637096] [2020-11-30 01:31:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:31:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:31:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:31:58,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065637096] [2020-11-30 01:31:58,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:31:58,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:31:58,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497430204] [2020-11-30 01:31:58,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:31:58,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:31:58,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:31:58,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:31:58,275 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 3 states. [2020-11-30 01:31:58,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:31:58,316 INFO L93 Difference]: Finished difference Result 129 states and 192 transitions. [2020-11-30 01:31:58,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:31:58,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-30 01:31:58,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:31:58,319 INFO L225 Difference]: With dead ends: 129 [2020-11-30 01:31:58,319 INFO L226 Difference]: Without dead ends: 88 [2020-11-30 01:31:58,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:31:58,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-30 01:31:58,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-11-30 01:31:58,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-30 01:31:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 125 transitions. [2020-11-30 01:31:58,332 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 125 transitions. Word has length 22 [2020-11-30 01:31:58,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:31:58,333 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 125 transitions. [2020-11-30 01:31:58,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:31:58,333 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 125 transitions. [2020-11-30 01:31:58,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 01:31:58,334 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:31:58,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:31:58,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:31:58,335 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:31:58,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:31:58,336 INFO L82 PathProgramCache]: Analyzing trace with hash -595366227, now seen corresponding path program 1 times [2020-11-30 01:31:58,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:31:58,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962246400] [2020-11-30 01:31:58,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:31:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:31:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:31:58,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962246400] [2020-11-30 01:31:58,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:31:58,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:31:58,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293394029] [2020-11-30 01:31:58,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:31:58,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:31:58,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:31:58,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:31:58,441 INFO L87 Difference]: Start difference. First operand 84 states and 125 transitions. Second operand 3 states. [2020-11-30 01:31:58,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:31:58,536 INFO L93 Difference]: Finished difference Result 203 states and 306 transitions. [2020-11-30 01:31:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:31:58,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-30 01:31:58,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:31:58,538 INFO L225 Difference]: With dead ends: 203 [2020-11-30 01:31:58,538 INFO L226 Difference]: Without dead ends: 125 [2020-11-30 01:31:58,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:31:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-30 01:31:58,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2020-11-30 01:31:58,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-30 01:31:58,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 179 transitions. [2020-11-30 01:31:58,555 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 179 transitions. Word has length 24 [2020-11-30 01:31:58,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:31:58,555 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 179 transitions. [2020-11-30 01:31:58,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:31:58,556 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 179 transitions. [2020-11-30 01:31:58,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 01:31:58,557 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:31:58,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:31:58,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:31:58,558 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:31:58,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:31:58,559 INFO L82 PathProgramCache]: Analyzing trace with hash 566175321, now seen corresponding path program 1 times [2020-11-30 01:31:58,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:31:58,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992450024] [2020-11-30 01:31:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:31:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:31:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:31:58,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992450024] [2020-11-30 01:31:58,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:31:58,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:31:58,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005057054] [2020-11-30 01:31:58,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:31:58,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:31:58,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:31:58,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:31:58,641 INFO L87 Difference]: Start difference. First operand 123 states and 179 transitions. Second operand 5 states. [2020-11-30 01:31:58,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:31:58,795 INFO L93 Difference]: Finished difference Result 619 states and 916 transitions. [2020-11-30 01:31:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:31:58,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-30 01:31:58,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:31:58,800 INFO L225 Difference]: With dead ends: 619 [2020-11-30 01:31:58,801 INFO L226 Difference]: Without dead ends: 502 [2020-11-30 01:31:58,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:31:58,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-11-30 01:31:58,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 230. [2020-11-30 01:31:58,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-30 01:31:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 331 transitions. [2020-11-30 01:31:58,867 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 331 transitions. Word has length 25 [2020-11-30 01:31:58,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:31:58,867 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 331 transitions. [2020-11-30 01:31:58,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:31:58,867 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 331 transitions. [2020-11-30 01:31:58,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 01:31:58,869 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:31:58,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:31:58,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:31:58,879 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:31:58,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:31:58,881 INFO L82 PathProgramCache]: Analyzing trace with hash 362368227, now seen corresponding path program 1 times [2020-11-30 01:31:58,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:31:58,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091088689] [2020-11-30 01:31:58,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:31:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:31:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:31:59,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091088689] [2020-11-30 01:31:59,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:31:59,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:31:59,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848137322] [2020-11-30 01:31:59,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:31:59,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:31:59,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:31:59,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:31:59,006 INFO L87 Difference]: Start difference. First operand 230 states and 331 transitions. Second operand 5 states. [2020-11-30 01:31:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:31:59,189 INFO L93 Difference]: Finished difference Result 660 states and 954 transitions. [2020-11-30 01:31:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:31:59,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-30 01:31:59,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:31:59,195 INFO L225 Difference]: With dead ends: 660 [2020-11-30 01:31:59,195 INFO L226 Difference]: Without dead ends: 658 [2020-11-30 01:31:59,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:31:59,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-11-30 01:31:59,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 230. [2020-11-30 01:31:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-30 01:31:59,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 329 transitions. [2020-11-30 01:31:59,241 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 329 transitions. Word has length 26 [2020-11-30 01:31:59,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:31:59,246 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 329 transitions. [2020-11-30 01:31:59,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:31:59,246 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 329 transitions. [2020-11-30 01:31:59,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 01:31:59,254 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:31:59,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:31:59,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:31:59,255 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:31:59,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:31:59,259 INFO L82 PathProgramCache]: Analyzing trace with hash 922855028, now seen corresponding path program 1 times [2020-11-30 01:31:59,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:31:59,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672251863] [2020-11-30 01:31:59,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:31:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:31:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:31:59,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672251863] [2020-11-30 01:31:59,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:31:59,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:31:59,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990701424] [2020-11-30 01:31:59,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:31:59,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:31:59,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:31:59,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:31:59,347 INFO L87 Difference]: Start difference. First operand 230 states and 329 transitions. Second operand 5 states. [2020-11-30 01:31:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:31:59,453 INFO L93 Difference]: Finished difference Result 634 states and 892 transitions. [2020-11-30 01:31:59,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:31:59,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-30 01:31:59,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:31:59,457 INFO L225 Difference]: With dead ends: 634 [2020-11-30 01:31:59,457 INFO L226 Difference]: Without dead ends: 410 [2020-11-30 01:31:59,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:31:59,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-11-30 01:31:59,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 254. [2020-11-30 01:31:59,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-30 01:31:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 353 transitions. [2020-11-30 01:31:59,500 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 353 transitions. Word has length 31 [2020-11-30 01:31:59,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:31:59,502 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 353 transitions. [2020-11-30 01:31:59,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:31:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 353 transitions. [2020-11-30 01:31:59,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 01:31:59,508 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:31:59,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:31:59,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 01:31:59,509 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:31:59,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:31:59,509 INFO L82 PathProgramCache]: Analyzing trace with hash 529828018, now seen corresponding path program 1 times [2020-11-30 01:31:59,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:31:59,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510378376] [2020-11-30 01:31:59,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:31:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:31:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:31:59,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510378376] [2020-11-30 01:31:59,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:31:59,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 01:31:59,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345029248] [2020-11-30 01:31:59,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:31:59,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:31:59,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:31:59,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:31:59,607 INFO L87 Difference]: Start difference. First operand 254 states and 353 transitions. Second operand 5 states. [2020-11-30 01:31:59,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:31:59,765 INFO L93 Difference]: Finished difference Result 718 states and 977 transitions. [2020-11-30 01:31:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:31:59,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-30 01:31:59,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:31:59,769 INFO L225 Difference]: With dead ends: 718 [2020-11-30 01:31:59,770 INFO L226 Difference]: Without dead ends: 470 [2020-11-30 01:31:59,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:31:59,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-11-30 01:31:59,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 270. [2020-11-30 01:31:59,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-11-30 01:31:59,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 369 transitions. [2020-11-30 01:31:59,802 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 369 transitions. Word has length 31 [2020-11-30 01:31:59,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:31:59,802 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 369 transitions. [2020-11-30 01:31:59,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:31:59,803 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 369 transitions. [2020-11-30 01:31:59,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 01:31:59,803 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:31:59,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:31:59,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 01:31:59,806 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:31:59,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:31:59,806 INFO L82 PathProgramCache]: Analyzing trace with hash 787993456, now seen corresponding path program 1 times [2020-11-30 01:31:59,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:31:59,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158608216] [2020-11-30 01:31:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:31:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:31:59,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:31:59,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158608216] [2020-11-30 01:31:59,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:31:59,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:31:59,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348777651] [2020-11-30 01:31:59,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:31:59,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:31:59,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:31:59,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:31:59,874 INFO L87 Difference]: Start difference. First operand 270 states and 369 transitions. Second operand 3 states. [2020-11-30 01:31:59,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:31:59,933 INFO L93 Difference]: Finished difference Result 638 states and 866 transitions. [2020-11-30 01:31:59,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:31:59,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-11-30 01:31:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:31:59,937 INFO L225 Difference]: With dead ends: 638 [2020-11-30 01:31:59,937 INFO L226 Difference]: Without dead ends: 374 [2020-11-30 01:31:59,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:31:59,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-11-30 01:31:59,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2020-11-30 01:31:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-11-30 01:31:59,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 495 transitions. [2020-11-30 01:31:59,978 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 495 transitions. Word has length 31 [2020-11-30 01:31:59,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:31:59,978 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 495 transitions. [2020-11-30 01:31:59,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:31:59,978 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 495 transitions. [2020-11-30 01:31:59,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-30 01:31:59,979 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:31:59,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:31:59,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 01:31:59,980 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:31:59,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:31:59,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1324766414, now seen corresponding path program 1 times [2020-11-30 01:31:59,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:31:59,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437070778] [2020-11-30 01:31:59,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:32:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:32:00,070 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:32:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:32:00,171 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:32:00,234 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:32:00,235 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:32:00,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 01:32:00,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:32:00 BoogieIcfgContainer [2020-11-30 01:32:00,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:32:00,385 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:32:00,385 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:32:00,386 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:32:00,386 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:31:57" (3/4) ... [2020-11-30 01:32:00,397 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:32:00,544 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0560fb1c-1b0a-4c63-963a-8a9a98965268/bin/uautomizer/witness.graphml [2020-11-30 01:32:00,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:32:00,547 INFO L168 Benchmark]: Toolchain (without parser) took 5246.18 ms. Allocated memory was 94.4 MB in the beginning and 165.7 MB in the end (delta: 71.3 MB). Free memory was 52.6 MB in the beginning and 103.7 MB in the end (delta: -51.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:32:00,547 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 94.4 MB. Free memory is still 70.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:32:00,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.91 ms. Allocated memory is still 94.4 MB. Free memory was 52.5 MB in the beginning and 52.2 MB in the end (delta: 310.3 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:32:00,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.85 ms. Allocated memory is still 94.4 MB. Free memory was 52.2 MB in the beginning and 48.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:32:00,549 INFO L168 Benchmark]: Boogie Preprocessor took 80.56 ms. Allocated memory is still 94.4 MB. Free memory was 48.5 MB in the beginning and 45.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:32:00,550 INFO L168 Benchmark]: RCFGBuilder took 1151.79 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 45.9 MB in the beginning and 59.6 MB in the end (delta: -13.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:32:00,550 INFO L168 Benchmark]: TraceAbstraction took 3134.25 ms. Allocated memory was 136.3 MB in the beginning and 165.7 MB in the end (delta: 29.4 MB). Free memory was 59.6 MB in the beginning and 117.3 MB in the end (delta: -57.7 MB). Peak memory consumption was 45.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:32:00,553 INFO L168 Benchmark]: Witness Printer took 158.90 ms. Allocated memory is still 165.7 MB. Free memory was 117.3 MB in the beginning and 103.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:32:00,556 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 94.4 MB. Free memory is still 70.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 591.91 ms. Allocated memory is still 94.4 MB. Free memory was 52.5 MB in the beginning and 52.2 MB in the end (delta: 310.3 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.85 ms. Allocated memory is still 94.4 MB. Free memory was 52.2 MB in the beginning and 48.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.56 ms. Allocated memory is still 94.4 MB. Free memory was 48.5 MB in the beginning and 45.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1151.79 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 45.9 MB in the beginning and 59.6 MB in the end (delta: -13.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3134.25 ms. Allocated memory was 136.3 MB in the beginning and 165.7 MB in the end (delta: 29.4 MB). Free memory was 59.6 MB in the beginning and 117.3 MB in the end (delta: -57.7 MB). Peak memory consumption was 45.1 MB. Max. memory is 16.1 GB. * Witness Printer took 158.90 ms. Allocated memory is still 165.7 MB. Free memory was 117.3 MB in the beginning and 103.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 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; [L452] int waterLevel = 1; [L453] int methaneLevelCritical = 0; [L619] int pumpRunning = 0; [L620] int systemActive = 1; [L850] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L923] int retValue_acc ; [L924] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L841] int retValue_acc ; [L844] retValue_acc = 1 [L845] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L930] tmp = valid_product() [L932] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L550] int splverifierCounter ; [L551] int tmp ; [L552] int tmp___0 ; [L553] int tmp___1 ; [L554] int tmp___2 ; [L557] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L559] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L561] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L567] tmp = __VERIFIER_nondet_int() [L569] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L470] COND TRUE waterLevel < 2 [L471] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L577] tmp___0 = __VERIFIER_nondet_int() [L579] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L482] COND FALSE !(\read(methaneLevelCritical)) [L485] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L587] tmp___2 = __VERIFIER_nondet_int() [L589] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L626] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L633] COND TRUE \read(systemActive) [L681] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L684] COND FALSE !(\read(pumpRunning)) [L655] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L658] COND TRUE ! pumpRunning [L778] int retValue_acc ; [L779] int tmp ; [L780] int tmp___0 ; [L532] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L535] COND FALSE !(waterLevel < 2) [L539] retValue_acc = 0 [L540] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L784] tmp = isHighWaterSensorDry() [L786] COND FALSE !(\read(tmp)) [L789] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L791] retValue_acc = tmp___0 [L792] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L660] tmp = isHighWaterLevel() [L662] COND TRUE \read(tmp) [L709] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L412] int tmp ; [L413] int tmp___0 ; [L491] int retValue_acc ; [L494] retValue_acc = methaneLevelCritical [L495] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L417] tmp = isMethaneLevelCritical() [L419] COND TRUE \read(tmp) [L733] int retValue_acc ; [L736] retValue_acc = pumpRunning [L737] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L421] tmp___0 = isPumpRunning() [L423] 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_product39.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: 2.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 831 SDtfs, 1119 SDslu, 1197 SDs, 0 SdLazy, 166 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=374occurred 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, 1062 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 11496 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...