./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa --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 7e5f42a5bbc52e8ca75c0ac5e2c6aad044a3ab94096d236f597eae12e8fb5e5c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:23:23,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:23:23,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:23:23,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:23:23,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:23:23,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:23:23,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:23:23,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:23:23,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:23:23,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:23:23,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:23:23,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:23:23,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:23:23,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:23:23,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:23:23,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:23:23,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:23:23,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:23:23,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:23:23,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:23:23,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:23:23,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:23:23,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:23:23,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:23:23,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:23:23,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:23:23,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:23:23,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:23:23,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:23:23,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:23:23,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:23:23,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:23:23,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:23:23,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:23:23,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:23:23,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:23:23,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:23:23,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:23:23,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:23:23,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:23:23,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:23:23,309 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:23:23,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:23:23,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:23:23,326 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:23:23,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:23:23,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:23:23,327 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:23:23,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:23:23,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:23:23,328 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:23:23,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:23:23,328 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:23:23,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:23:23,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:23:23,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:23:23,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:23:23,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:23:23,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:23:23,329 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:23:23,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:23:23,329 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:23:23,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:23:23,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:23:23,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:23:23,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:23:23,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:23:23,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:23:23,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:23:23,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:23:23,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:23:23,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:23:23,331 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:23:23,331 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:23:23,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:23:23,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:23:23,331 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_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e5f42a5bbc52e8ca75c0ac5e2c6aad044a3ab94096d236f597eae12e8fb5e5c [2021-12-06 19:23:23,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:23:23,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:23:23,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:23:23,534 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:23:23,535 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:23:23,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2021-12-06 19:23:23,586 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/data/042958a77/9eb463feefb44fe6ba4abf4ccc34405e/FLAGbea8c4dc4 [2021-12-06 19:23:24,019 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:23:24,020 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2021-12-06 19:23:24,030 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/data/042958a77/9eb463feefb44fe6ba4abf4ccc34405e/FLAGbea8c4dc4 [2021-12-06 19:23:24,039 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/data/042958a77/9eb463feefb44fe6ba4abf4ccc34405e [2021-12-06 19:23:24,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:23:24,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:23:24,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:23:24,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:23:24,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:23:24,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:23:24" (1/1) ... [2021-12-06 19:23:24,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b014274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:24, skipping insertion in model container [2021-12-06 19:23:24,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:23:24" (1/1) ... [2021-12-06 19:23:24,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:23:24,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:23:24,230 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c[3936,3949] [2021-12-06 19:23:24,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:23:24,296 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:23:24,311 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c[3936,3949] [2021-12-06 19:23:24,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:23:24,358 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:23:24,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:24 WrapperNode [2021-12-06 19:23:24,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:23:24,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:23:24,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:23:24,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:23:24,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:24" (1/1) ... [2021-12-06 19:23:24,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:24" (1/1) ... [2021-12-06 19:23:24,395 INFO L137 Inliner]: procedures = 55, calls = 157, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 257 [2021-12-06 19:23:24,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:23:24,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:23:24,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:23:24,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:23:24,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:24" (1/1) ... [2021-12-06 19:23:24,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:24" (1/1) ... [2021-12-06 19:23:24,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:24" (1/1) ... [2021-12-06 19:23:24,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:24" (1/1) ... [2021-12-06 19:23:24,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:24" (1/1) ... [2021-12-06 19:23:24,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:24" (1/1) ... [2021-12-06 19:23:24,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:24" (1/1) ... [2021-12-06 19:23:24,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:23:24,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:23:24,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:23:24,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:23:24,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:24" (1/1) ... [2021-12-06 19:23:24,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:23:24,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:23:24,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:23:24,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:23:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:23:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-06 19:23:24,485 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-06 19:23:24,485 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-12-06 19:23:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-12-06 19:23:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-06 19:23:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-06 19:23:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-06 19:23:24,486 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-06 19:23:24,486 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-12-06 19:23:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-12-06 19:23:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-06 19:23:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-06 19:23:24,487 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-12-06 19:23:24,487 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-12-06 19:23:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:23:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-06 19:23:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-06 19:23:24,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:23:24,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:23:24,548 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:23:24,550 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:23:24,765 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:23:24,771 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:23:24,772 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 19:23:24,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:23:24 BoogieIcfgContainer [2021-12-06 19:23:24,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:23:24,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:23:24,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:23:24,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:23:24,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:23:24" (1/3) ... [2021-12-06 19:23:24,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ab5f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:23:24, skipping insertion in model container [2021-12-06 19:23:24,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:23:24" (2/3) ... [2021-12-06 19:23:24,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ab5f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:23:24, skipping insertion in model container [2021-12-06 19:23:24,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:23:24" (3/3) ... [2021-12-06 19:23:24,780 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product40.cil.c [2021-12-06 19:23:24,785 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:23:24,785 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:23:24,818 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:23:24,823 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:23:24,823 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:23:24,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 71 states have (on average 1.380281690140845) internal successors, (98), 80 states have internal predecessors, (98), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-06 19:23:24,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 19:23:24,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:24,843 INFO L514 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] [2021-12-06 19:23:24,843 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:23:24,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:24,847 INFO L85 PathProgramCache]: Analyzing trace with hash -122698053, now seen corresponding path program 1 times [2021-12-06 19:23:24,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:24,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675804507] [2021-12-06 19:23:24,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:24,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 19:23:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:25,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:25,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:25,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675804507] [2021-12-06 19:23:25,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675804507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:23:25,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:23:25,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:23:25,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609234686] [2021-12-06 19:23:25,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:23:25,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 19:23:25,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:25,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 19:23:25,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 19:23:25,051 INFO L87 Difference]: Start difference. First operand has 95 states, 71 states have (on average 1.380281690140845) internal successors, (98), 80 states have internal predecessors, (98), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:23:25,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:25,083 INFO L93 Difference]: Finished difference Result 182 states and 247 transitions. [2021-12-06 19:23:25,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 19:23:25,085 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-06 19:23:25,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:25,093 INFO L225 Difference]: With dead ends: 182 [2021-12-06 19:23:25,093 INFO L226 Difference]: Without dead ends: 86 [2021-12-06 19:23:25,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 19:23:25,099 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:25,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:23:25,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-06 19:23:25,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-12-06 19:23:25,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.3125) internal successors, (84), 72 states have internal predecessors, (84), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-06 19:23:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2021-12-06 19:23:25,140 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 111 transitions. Word has length 25 [2021-12-06 19:23:25,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:25,140 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 111 transitions. [2021-12-06 19:23:25,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:23:25,141 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 111 transitions. [2021-12-06 19:23:25,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 19:23:25,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:25,144 INFO L514 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] [2021-12-06 19:23:25,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:23:25,145 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:23:25,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:25,146 INFO L85 PathProgramCache]: Analyzing trace with hash -204473264, now seen corresponding path program 1 times [2021-12-06 19:23:25,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:25,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642620865] [2021-12-06 19:23:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:25,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:25,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 19:23:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:25,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:25,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642620865] [2021-12-06 19:23:25,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642620865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:23:25,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:23:25,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:23:25,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999418445] [2021-12-06 19:23:25,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:23:25,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:23:25,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:25,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:23:25,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:23:25,233 INFO L87 Difference]: Start difference. First operand 86 states and 111 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:23:25,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:25,251 INFO L93 Difference]: Finished difference Result 133 states and 171 transitions. [2021-12-06 19:23:25,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:23:25,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-12-06 19:23:25,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:25,253 INFO L225 Difference]: With dead ends: 133 [2021-12-06 19:23:25,254 INFO L226 Difference]: Without dead ends: 77 [2021-12-06 19:23:25,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:23:25,256 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 17 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:25,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 174 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:23:25,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-06 19:23:25,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-12-06 19:23:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 66 states have internal predecessors, (77), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-06 19:23:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2021-12-06 19:23:25,269 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 26 [2021-12-06 19:23:25,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:25,270 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2021-12-06 19:23:25,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:23:25,270 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2021-12-06 19:23:25,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 19:23:25,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:25,272 INFO L514 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] [2021-12-06 19:23:25,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:23:25,272 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:23:25,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:25,273 INFO L85 PathProgramCache]: Analyzing trace with hash -359670134, now seen corresponding path program 1 times [2021-12-06 19:23:25,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:25,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260077270] [2021-12-06 19:23:25,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:25,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:25,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:23:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:25,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:25,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260077270] [2021-12-06 19:23:25,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260077270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:23:25,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:23:25,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:23:25,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381699025] [2021-12-06 19:23:25,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:23:25,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:23:25,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:25,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:23:25,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:23:25,359 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:23:25,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:25,429 INFO L93 Difference]: Finished difference Result 191 states and 249 transitions. [2021-12-06 19:23:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:23:25,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-12-06 19:23:25,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:25,431 INFO L225 Difference]: With dead ends: 191 [2021-12-06 19:23:25,431 INFO L226 Difference]: Without dead ends: 121 [2021-12-06 19:23:25,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:23:25,433 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 162 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:25,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 339 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:23:25,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-06 19:23:25,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 118. [2021-12-06 19:23:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 89 states have (on average 1.348314606741573) internal successors, (120), 100 states have internal predecessors, (120), 16 states have call successors, (16), 12 states have call predecessors, (16), 12 states have return successors, (17), 12 states have call predecessors, (17), 16 states have call successors, (17) [2021-12-06 19:23:25,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 153 transitions. [2021-12-06 19:23:25,447 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 153 transitions. Word has length 31 [2021-12-06 19:23:25,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:25,448 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 153 transitions. [2021-12-06 19:23:25,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:23:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 153 transitions. [2021-12-06 19:23:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 19:23:25,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:25,450 INFO L514 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, 1, 1] [2021-12-06 19:23:25,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:23:25,450 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:23:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:25,450 INFO L85 PathProgramCache]: Analyzing trace with hash -831178254, now seen corresponding path program 1 times [2021-12-06 19:23:25,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:25,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214106482] [2021-12-06 19:23:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:25,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:25,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:23:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:25,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:25,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:25,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214106482] [2021-12-06 19:23:25,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214106482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:23:25,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:23:25,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:23:25,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392776860] [2021-12-06 19:23:25,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:23:25,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:23:25,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:25,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:23:25,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:23:25,507 INFO L87 Difference]: Start difference. First operand 118 states and 153 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:23:25,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:25,557 INFO L93 Difference]: Finished difference Result 334 states and 451 transitions. [2021-12-06 19:23:25,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:23:25,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-12-06 19:23:25,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:25,561 INFO L225 Difference]: With dead ends: 334 [2021-12-06 19:23:25,561 INFO L226 Difference]: Without dead ends: 223 [2021-12-06 19:23:25,562 INFO L932 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 [2021-12-06 19:23:25,564 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 68 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:25,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 403 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:23:25,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-12-06 19:23:25,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 217. [2021-12-06 19:23:25,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 162 states have (on average 1.3271604938271604) internal successors, (215), 181 states have internal predecessors, (215), 32 states have call successors, (32), 24 states have call predecessors, (32), 22 states have return successors, (37), 22 states have call predecessors, (37), 32 states have call successors, (37) [2021-12-06 19:23:25,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 284 transitions. [2021-12-06 19:23:25,597 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 284 transitions. Word has length 34 [2021-12-06 19:23:25,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:25,597 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 284 transitions. [2021-12-06 19:23:25,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:23:25,597 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 284 transitions. [2021-12-06 19:23:25,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 19:23:25,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:25,600 INFO L514 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, 1, 1, 1, 1] [2021-12-06 19:23:25,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:23:25,600 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:23:25,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:25,600 INFO L85 PathProgramCache]: Analyzing trace with hash -84760713, now seen corresponding path program 1 times [2021-12-06 19:23:25,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:25,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833655233] [2021-12-06 19:23:25,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:25,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:25,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:23:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:23:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:23:25,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:23:25,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833655233] [2021-12-06 19:23:25,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833655233] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:23:25,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:23:25,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:23:25,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515194167] [2021-12-06 19:23:25,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:23:25,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:23:25,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:23:25,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:23:25,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:23:25,635 INFO L87 Difference]: Start difference. First operand 217 states and 284 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:23:25,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:23:25,662 INFO L93 Difference]: Finished difference Result 489 states and 656 transitions. [2021-12-06 19:23:25,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:23:25,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-12-06 19:23:25,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:23:25,665 INFO L225 Difference]: With dead ends: 489 [2021-12-06 19:23:25,665 INFO L226 Difference]: Without dead ends: 279 [2021-12-06 19:23:25,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:23:25,667 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 59 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:23:25,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 168 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:23:25,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-12-06 19:23:25,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2021-12-06 19:23:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 210 states have (on average 1.2857142857142858) internal successors, (270), 224 states have internal predecessors, (270), 34 states have call successors, (34), 32 states have call predecessors, (34), 30 states have return successors, (47), 31 states have call predecessors, (47), 34 states have call successors, (47) [2021-12-06 19:23:25,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 351 transitions. [2021-12-06 19:23:25,689 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 351 transitions. Word has length 36 [2021-12-06 19:23:25,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:23:25,689 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 351 transitions. [2021-12-06 19:23:25,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:23:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 351 transitions. [2021-12-06 19:23:25,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 19:23:25,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:23:25,691 INFO L514 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, 1, 1, 1, 1, 1, 1] [2021-12-06 19:23:25,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:23:25,691 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:23:25,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:23:25,691 INFO L85 PathProgramCache]: Analyzing trace with hash -433929128, now seen corresponding path program 1 times [2021-12-06 19:23:25,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:23:25,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979488325] [2021-12-06 19:23:25,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:23:25,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:23:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:23:25,708 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:23:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:23:25,740 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:23:25,741 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 19:23:25,741 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 19:23:25,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:23:25,745 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-06 19:23:25,748 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 19:23:25,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 07:23:25 BoogieIcfgContainer [2021-12-06 19:23:25,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 19:23:25,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 19:23:25,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 19:23:25,781 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 19:23:25,782 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:23:24" (3/4) ... [2021-12-06 19:23:25,783 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 19:23:25,836 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 19:23:25,836 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 19:23:25,836 INFO L158 Benchmark]: Toolchain (without parser) took 1794.16ms. Allocated memory is still 107.0MB. Free memory was 72.3MB in the beginning and 49.2MB in the end (delta: 23.1MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2021-12-06 19:23:25,836 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 75.5MB. Free memory was 53.1MB in the beginning and 53.0MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:23:25,837 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.83ms. Allocated memory is still 107.0MB. Free memory was 72.3MB in the beginning and 75.9MB in the end (delta: -3.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 19:23:25,837 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.53ms. Allocated memory is still 107.0MB. Free memory was 75.9MB in the beginning and 73.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:23:25,837 INFO L158 Benchmark]: Boogie Preprocessor took 20.28ms. Allocated memory is still 107.0MB. Free memory was 73.3MB in the beginning and 71.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:23:25,838 INFO L158 Benchmark]: RCFGBuilder took 357.49ms. Allocated memory is still 107.0MB. Free memory was 71.8MB in the beginning and 55.6MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-06 19:23:25,838 INFO L158 Benchmark]: TraceAbstraction took 1005.33ms. Allocated memory is still 107.0MB. Free memory was 55.0MB in the beginning and 54.0MB in the end (delta: 950.5kB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2021-12-06 19:23:25,838 INFO L158 Benchmark]: Witness Printer took 54.79ms. Allocated memory is still 107.0MB. Free memory was 54.0MB in the beginning and 49.2MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 19:23:25,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 75.5MB. Free memory was 53.1MB in the beginning and 53.0MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.83ms. Allocated memory is still 107.0MB. Free memory was 72.3MB in the beginning and 75.9MB in the end (delta: -3.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.53ms. Allocated memory is still 107.0MB. Free memory was 75.9MB in the beginning and 73.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.28ms. Allocated memory is still 107.0MB. Free memory was 73.3MB in the beginning and 71.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 357.49ms. Allocated memory is still 107.0MB. Free memory was 71.8MB in the beginning and 55.6MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1005.33ms. Allocated memory is still 107.0MB. Free memory was 55.0MB in the beginning and 54.0MB in the end (delta: 950.5kB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. * Witness Printer took 54.79ms. Allocated memory is still 107.0MB. Free memory was 54.0MB in the beginning and 49.2MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 231]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L239] int waterLevel = 1; [L240] int methaneLevelCritical = 0; [L337] int pumpRunning = 0; [L338] int systemActive = 1; [L776] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] int retValue_acc ; [L132] int tmp ; [L136] FCALL select_helpers() [L137] FCALL select_features() [L138] CALL, EXPR valid_product() [L180] int retValue_acc ; [L183] retValue_acc = 1 [L184] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L539] int splverifierCounter ; [L540] int tmp ; [L541] int tmp___0 ; [L542] int tmp___1 ; [L543] int tmp___2 ; [L546] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L548] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L550] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L556] tmp = __VERIFIER_nondet_int() [L558] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L560] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L257] COND TRUE waterLevel < 2 [L258] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L560] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L566] tmp___0 = __VERIFIER_nondet_int() [L568] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L576] tmp___2 = __VERIFIER_nondet_int() [L578] COND FALSE !(\read(tmp___2)) [L584] tmp___1 = __VERIFIER_nondet_int() [L586] COND TRUE \read(tmp___1) [L588] CALL stopSystem() [L518] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L525] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L588] RET stopSystem() [L595] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L344] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L351] COND FALSE !(\read(systemActive)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L359] CALL __utac_acc__Specification3_spec__1() [L194] int tmp ; [L195] int tmp___0 ; [L196] int tmp___1 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L200] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L278] int retValue_acc ; [L281] retValue_acc = methaneLevelCritical [L282] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=0, waterLevel=2] [L200] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L200] tmp = isMethaneLevelCritical() [L202] COND FALSE !(\read(tmp)) [L206] CALL, EXPR getWaterLevel() [L310] int retValue_acc ; [L313] retValue_acc = waterLevel [L314] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=2, systemActive=0, waterLevel=2] [L206] RET, EXPR getWaterLevel() [L206] tmp___0 = getWaterLevel() [L208] COND TRUE tmp___0 == 2 [L210] CALL, EXPR isPumpRunning() [L451] int retValue_acc ; [L454] retValue_acc = pumpRunning [L455] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=0, waterLevel=2] [L210] RET, EXPR isPumpRunning() [L210] tmp___1 = isPumpRunning() [L212] COND FALSE !(\read(tmp___1)) [L216] CALL __automaton_fail() [L231] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 310 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 306 mSDsluCounter, 1204 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 664 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 540 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=275occurred in iteration=5, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 261 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2021-12-06 19:23:25,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652b33-ca10-4cd3-83bc-a281aac028f2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE