./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product44.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_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/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_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/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_828e5a66-ef60-4b74-89d2-6785f5518124/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 da786641c6f5791cd76909be3af2b92112e50156e91d6775689240586eed4e85 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:12:05,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:12:05,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:12:05,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:12:05,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:12:05,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:12:05,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:12:05,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:12:05,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:12:05,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:12:05,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:12:05,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:12:05,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:12:05,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:12:05,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:12:05,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:12:05,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:12:05,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:12:05,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:12:05,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:12:05,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:12:05,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:12:05,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:12:05,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:12:05,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:12:05,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:12:05,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:12:05,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:12:05,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:12:05,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:12:05,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:12:05,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:12:05,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:12:05,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:12:05,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:12:05,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:12:05,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:12:05,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:12:05,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:12:05,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:12:05,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:12:05,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:12:05,316 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:12:05,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:12:05,316 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:12:05,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:12:05,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:12:05,317 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:12:05,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:12:05,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:12:05,317 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:12:05,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:12:05,318 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:12:05,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:12:05,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:12:05,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:12:05,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:12:05,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:12:05,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:12:05,318 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:12:05,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:12:05,319 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:12:05,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:12:05,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:12:05,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:12:05,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:12:05,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:12:05,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:12:05,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:12:05,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:12:05,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:12:05,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:12:05,320 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:12:05,320 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:12:05,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:12:05,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:12:05,320 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_828e5a66-ef60-4b74-89d2-6785f5518124/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da786641c6f5791cd76909be3af2b92112e50156e91d6775689240586eed4e85 [2021-12-07 00:12:05,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:12:05,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:12:05,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:12:05,536 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:12:05,536 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:12:05,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c [2021-12-07 00:12:05,580 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/data/c3f6ac836/18c26de871304ab0a56e2a505fd725ba/FLAG65d4b231a [2021-12-07 00:12:05,975 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:12:05,975 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c [2021-12-07 00:12:05,984 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/data/c3f6ac836/18c26de871304ab0a56e2a505fd725ba/FLAG65d4b231a [2021-12-07 00:12:05,994 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/data/c3f6ac836/18c26de871304ab0a56e2a505fd725ba [2021-12-07 00:12:05,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:12:05,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:12:05,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:12:05,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:12:06,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:12:06,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:12:05" (1/1) ... [2021-12-07 00:12:06,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31fac99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:06, skipping insertion in model container [2021-12-07 00:12:06,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:12:05" (1/1) ... [2021-12-07 00:12:06,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:12:06,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:12:06,238 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_828e5a66-ef60-4b74-89d2-6785f5518124/sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c[15806,15819] [2021-12-07 00:12:06,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:12:06,256 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:12:06,303 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_828e5a66-ef60-4b74-89d2-6785f5518124/sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c[15806,15819] [2021-12-07 00:12:06,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:12:06,323 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:12:06,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:06 WrapperNode [2021-12-07 00:12:06,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:12:06,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:12:06,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:12:06,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:12:06,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:06" (1/1) ... [2021-12-07 00:12:06,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:06" (1/1) ... [2021-12-07 00:12:06,362 INFO L137 Inliner]: procedures = 55, calls = 154, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 256 [2021-12-07 00:12:06,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:12:06,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:12:06,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:12:06,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:12:06,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:06" (1/1) ... [2021-12-07 00:12:06,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:06" (1/1) ... [2021-12-07 00:12:06,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:06" (1/1) ... [2021-12-07 00:12:06,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:06" (1/1) ... [2021-12-07 00:12:06,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:06" (1/1) ... [2021-12-07 00:12:06,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:06" (1/1) ... [2021-12-07 00:12:06,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:06" (1/1) ... [2021-12-07 00:12:06,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:12:06,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:12:06,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:12:06,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:12:06,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:06" (1/1) ... [2021-12-07 00:12:06,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:12:06,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:12:06,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:12:06,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:12:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:12:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-07 00:12:06,454 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-07 00:12:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-07 00:12:06,454 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-07 00:12:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-07 00:12:06,454 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-07 00:12:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-07 00:12:06,454 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-07 00:12:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:12:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-07 00:12:06,455 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-07 00:12:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:12:06,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:12:06,516 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:12:06,518 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:12:06,737 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:12:06,742 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:12:06,742 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-07 00:12:06,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:12:06 BoogieIcfgContainer [2021-12-07 00:12:06,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:12:06,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:12:06,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:12:06,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:12:06,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:12:05" (1/3) ... [2021-12-07 00:12:06,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1effe5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:12:06, skipping insertion in model container [2021-12-07 00:12:06,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:12:06" (2/3) ... [2021-12-07 00:12:06,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1effe5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:12:06, skipping insertion in model container [2021-12-07 00:12:06,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:12:06" (3/3) ... [2021-12-07 00:12:06,750 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2021-12-07 00:12:06,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:12:06,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:12:06,793 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:12:06,798 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 [2021-12-07 00:12:06,798 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:12:06,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 64 states have (on average 1.390625) internal successors, (89), 70 states have internal predecessors, (89), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-07 00:12:06,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-07 00:12:06,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:06,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:06,819 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:06,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:06,824 INFO L85 PathProgramCache]: Analyzing trace with hash 512419975, now seen corresponding path program 1 times [2021-12-07 00:12:06,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:06,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706191777] [2021-12-07 00:12:06,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:06,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:12:07,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:12:07,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706191777] [2021-12-07 00:12:07,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706191777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:07,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:07,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:12:07,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349682620] [2021-12-07 00:12:07,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:07,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:12:07,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:12:07,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:12:07,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:12:07,054 INFO L87 Difference]: Start difference. First operand has 79 states, 64 states have (on average 1.390625) internal successors, (89), 70 states have internal predecessors, (89), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:12:07,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:07,086 INFO L93 Difference]: Finished difference Result 150 states and 205 transitions. [2021-12-07 00:12:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:12:07,088 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-07 00:12:07,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:07,095 INFO L225 Difference]: With dead ends: 150 [2021-12-07 00:12:07,095 INFO L226 Difference]: Without dead ends: 70 [2021-12-07 00:12:07,098 INFO L932 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 [2021-12-07 00:12:07,101 INFO L933 BasicCegarLoop]: 99 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, 99 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 [2021-12-07 00:12:07,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:07,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-07 00:12:07,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-12-07 00:12:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 62 states have internal predecessors, (75), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-07 00:12:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2021-12-07 00:12:07,137 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 19 [2021-12-07 00:12:07,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:07,137 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2021-12-07 00:12:07,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:12:07,137 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2021-12-07 00:12:07,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-07 00:12:07,139 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:07,139 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] [2021-12-07 00:12:07,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:12:07,139 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:07,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:07,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1475209998, now seen corresponding path program 1 times [2021-12-07 00:12:07,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:07,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886547065] [2021-12-07 00:12:07,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:07,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:12:07,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:12:07,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886547065] [2021-12-07 00:12:07,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886547065] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:07,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:07,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:12:07,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587035002] [2021-12-07 00:12:07,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:07,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:12:07,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:12:07,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:12:07,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:12:07,195 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:12:07,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:07,206 INFO L93 Difference]: Finished difference Result 101 states and 130 transitions. [2021-12-07 00:12:07,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:12:07,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-07 00:12:07,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:07,207 INFO L225 Difference]: With dead ends: 101 [2021-12-07 00:12:07,207 INFO L226 Difference]: Without dead ends: 61 [2021-12-07 00:12:07,208 INFO L932 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 [2021-12-07 00:12:07,209 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 18 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 132 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 [2021-12-07 00:12:07,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 132 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:07,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-07 00:12:07,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-12-07 00:12:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 56 states have internal predecessors, (68), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-07 00:12:07,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2021-12-07 00:12:07,217 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 20 [2021-12-07 00:12:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:07,217 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2021-12-07 00:12:07,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:12:07,217 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2021-12-07 00:12:07,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-07 00:12:07,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:07,218 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] [2021-12-07 00:12:07,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:12:07,218 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:07,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:07,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1091174008, now seen corresponding path program 1 times [2021-12-07 00:12:07,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:07,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742833492] [2021-12-07 00:12:07,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:07,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:12:07,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:12:07,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742833492] [2021-12-07 00:12:07,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742833492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:07,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:07,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:12:07,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893336479] [2021-12-07 00:12:07,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:07,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:12:07,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:12:07,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:12:07,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:12:07,281 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:12:07,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:07,392 INFO L93 Difference]: Finished difference Result 218 states and 292 transitions. [2021-12-07 00:12:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:12:07,393 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-07 00:12:07,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:07,395 INFO L225 Difference]: With dead ends: 218 [2021-12-07 00:12:07,395 INFO L226 Difference]: Without dead ends: 164 [2021-12-07 00:12:07,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:12:07,397 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 234 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:07,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 396 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:12:07,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-12-07 00:12:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 138. [2021-12-07 00:12:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 113 states have (on average 1.3716814159292035) internal successors, (155), 124 states have internal predecessors, (155), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (14), 11 states have call predecessors, (14), 13 states have call successors, (14) [2021-12-07 00:12:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 182 transitions. [2021-12-07 00:12:07,417 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 182 transitions. Word has length 25 [2021-12-07 00:12:07,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:07,417 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 182 transitions. [2021-12-07 00:12:07,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:12:07,417 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 182 transitions. [2021-12-07 00:12:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 00:12:07,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:07,419 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] [2021-12-07 00:12:07,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:12:07,419 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:07,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:07,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1563750239, now seen corresponding path program 1 times [2021-12-07 00:12:07,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:07,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174403495] [2021-12-07 00:12:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:07,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:12:07,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:12:07,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174403495] [2021-12-07 00:12:07,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174403495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:07,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:07,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:12:07,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835183320] [2021-12-07 00:12:07,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:07,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:12:07,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:12:07,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:12:07,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:12:07,474 INFO L87 Difference]: Start difference. First operand 138 states and 182 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:12:07,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:07,521 INFO L93 Difference]: Finished difference Result 383 states and 527 transitions. [2021-12-07 00:12:07,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:12:07,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-07 00:12:07,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:07,525 INFO L225 Difference]: With dead ends: 383 [2021-12-07 00:12:07,525 INFO L226 Difference]: Without dead ends: 252 [2021-12-07 00:12:07,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:12:07,529 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 49 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:07,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 297 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:07,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-12-07 00:12:07,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-12-07 00:12:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 206 states have (on average 1.3398058252427185) internal successors, (276), 224 states have internal predecessors, (276), 26 states have call successors, (26), 22 states have call predecessors, (26), 19 states have return successors, (32), 19 states have call predecessors, (32), 26 states have call successors, (32) [2021-12-07 00:12:07,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 334 transitions. [2021-12-07 00:12:07,566 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 334 transitions. Word has length 28 [2021-12-07 00:12:07,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:07,566 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 334 transitions. [2021-12-07 00:12:07,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:12:07,567 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 334 transitions. [2021-12-07 00:12:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 00:12:07,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:07,569 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] [2021-12-07 00:12:07,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:12:07,570 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:07,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:07,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1754867228, now seen corresponding path program 1 times [2021-12-07 00:12:07,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:07,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599756515] [2021-12-07 00:12:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:07,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:12:07,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:12:07,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599756515] [2021-12-07 00:12:07,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599756515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:07,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:07,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:12:07,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232726979] [2021-12-07 00:12:07,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:07,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:12:07,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:12:07,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:12:07,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:12:07,624 INFO L87 Difference]: Start difference. First operand 252 states and 334 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:12:07,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:07,651 INFO L93 Difference]: Finished difference Result 614 states and 833 transitions. [2021-12-07 00:12:07,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:12:07,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-07 00:12:07,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:07,654 INFO L225 Difference]: With dead ends: 614 [2021-12-07 00:12:07,655 INFO L226 Difference]: Without dead ends: 369 [2021-12-07 00:12:07,656 INFO L932 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 [2021-12-07 00:12:07,657 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 49 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:07,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 124 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-12-07 00:12:07,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2021-12-07 00:12:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 299 states have (on average 1.3043478260869565) internal successors, (390), 321 states have internal predecessors, (390), 36 states have call successors, (36), 36 states have call predecessors, (36), 31 states have return successors, (52), 31 states have call predecessors, (52), 36 states have call successors, (52) [2021-12-07 00:12:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 478 transitions. [2021-12-07 00:12:07,684 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 478 transitions. Word has length 30 [2021-12-07 00:12:07,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:07,684 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 478 transitions. [2021-12-07 00:12:07,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:12:07,684 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 478 transitions. [2021-12-07 00:12:07,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-07 00:12:07,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:07,686 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] [2021-12-07 00:12:07,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:12:07,686 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:07,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:07,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1515193275, now seen corresponding path program 1 times [2021-12-07 00:12:07,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:07,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947312154] [2021-12-07 00:12:07,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:07,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-07 00:12:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:12:07,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:12:07,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947312154] [2021-12-07 00:12:07,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947312154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:07,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:07,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:12:07,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365133865] [2021-12-07 00:12:07,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:07,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:12:07,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:12:07,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:12:07,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:12:07,732 INFO L87 Difference]: Start difference. First operand 367 states and 478 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-12-07 00:12:07,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:07,862 INFO L93 Difference]: Finished difference Result 478 states and 619 transitions. [2021-12-07 00:12:07,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:12:07,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 32 [2021-12-07 00:12:07,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:07,867 INFO L225 Difference]: With dead ends: 478 [2021-12-07 00:12:07,867 INFO L226 Difference]: Without dead ends: 476 [2021-12-07 00:12:07,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:12:07,869 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 132 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:07,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 357 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:12:07,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-12-07 00:12:07,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 447. [2021-12-07 00:12:07,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 366 states have (on average 1.284153005464481) internal successors, (470), 401 states have internal predecessors, (470), 40 states have call successors, (40), 36 states have call predecessors, (40), 40 states have return successors, (65), 35 states have call predecessors, (65), 40 states have call successors, (65) [2021-12-07 00:12:07,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 575 transitions. [2021-12-07 00:12:07,904 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 575 transitions. Word has length 32 [2021-12-07 00:12:07,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:07,905 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 575 transitions. [2021-12-07 00:12:07,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-12-07 00:12:07,905 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 575 transitions. [2021-12-07 00:12:07,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-07 00:12:07,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:07,908 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, 1, 1, 1, 1] [2021-12-07 00:12:07,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:12:07,908 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:07,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:07,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1654317802, now seen corresponding path program 1 times [2021-12-07 00:12:07,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:07,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187118754] [2021-12-07 00:12:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:07,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:07,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-07 00:12:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:12:07,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:12:07,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187118754] [2021-12-07 00:12:07,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187118754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:07,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:07,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:12:07,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706219762] [2021-12-07 00:12:07,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:07,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:12:07,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:12:07,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:12:07,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:12:07,959 INFO L87 Difference]: Start difference. First operand 447 states and 575 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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) [2021-12-07 00:12:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:08,071 INFO L93 Difference]: Finished difference Result 1013 states and 1332 transitions. [2021-12-07 00:12:08,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:12:08,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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 42 [2021-12-07 00:12:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:08,075 INFO L225 Difference]: With dead ends: 1013 [2021-12-07 00:12:08,076 INFO L226 Difference]: Without dead ends: 573 [2021-12-07 00:12:08,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:12:08,079 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 145 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:08,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 285 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:08,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-12-07 00:12:08,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 455. [2021-12-07 00:12:08,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 374 states have (on average 1.2727272727272727) internal successors, (476), 409 states have internal predecessors, (476), 40 states have call successors, (40), 36 states have call predecessors, (40), 40 states have return successors, (65), 35 states have call predecessors, (65), 40 states have call successors, (65) [2021-12-07 00:12:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 581 transitions. [2021-12-07 00:12:08,117 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 581 transitions. Word has length 42 [2021-12-07 00:12:08,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:08,118 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 581 transitions. [2021-12-07 00:12:08,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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) [2021-12-07 00:12:08,118 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 581 transitions. [2021-12-07 00:12:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-07 00:12:08,120 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:08,120 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, 1, 1, 1, 1] [2021-12-07 00:12:08,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:12:08,120 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:08,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:08,121 INFO L85 PathProgramCache]: Analyzing trace with hash -633249448, now seen corresponding path program 1 times [2021-12-07 00:12:08,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:08,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555139592] [2021-12-07 00:12:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:08,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:08,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-07 00:12:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:12:08,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:12:08,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555139592] [2021-12-07 00:12:08,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555139592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:08,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:08,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:12:08,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338793235] [2021-12-07 00:12:08,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:08,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:12:08,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:12:08,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:12:08,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:12:08,169 INFO L87 Difference]: Start difference. First operand 455 states and 581 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-12-07 00:12:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:08,274 INFO L93 Difference]: Finished difference Result 928 states and 1195 transitions. [2021-12-07 00:12:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:12:08,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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 42 [2021-12-07 00:12:08,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:08,277 INFO L225 Difference]: With dead ends: 928 [2021-12-07 00:12:08,277 INFO L226 Difference]: Without dead ends: 480 [2021-12-07 00:12:08,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:12:08,280 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 120 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:08,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 369 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:12:08,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-12-07 00:12:08,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 398. [2021-12-07 00:12:08,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 329 states have (on average 1.2583586626139818) internal successors, (414), 358 states have internal predecessors, (414), 34 states have call successors, (34), 30 states have call predecessors, (34), 34 states have return successors, (48), 31 states have call predecessors, (48), 34 states have call successors, (48) [2021-12-07 00:12:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 496 transitions. [2021-12-07 00:12:08,305 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 496 transitions. Word has length 42 [2021-12-07 00:12:08,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:08,305 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 496 transitions. [2021-12-07 00:12:08,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-12-07 00:12:08,306 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 496 transitions. [2021-12-07 00:12:08,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-07 00:12:08,307 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:08,307 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, 1, 1, 1, 1] [2021-12-07 00:12:08,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:12:08,308 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:08,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:08,308 INFO L85 PathProgramCache]: Analyzing trace with hash 646504788, now seen corresponding path program 1 times [2021-12-07 00:12:08,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:08,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811808000] [2021-12-07 00:12:08,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:08,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:08,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-07 00:12:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:12:08,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:12:08,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811808000] [2021-12-07 00:12:08,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811808000] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:12:08,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:12:08,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:12:08,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454815395] [2021-12-07 00:12:08,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:12:08,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:12:08,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:12:08,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:12:08,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:12:08,364 INFO L87 Difference]: Start difference. First operand 398 states and 496 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-12-07 00:12:08,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:08,492 INFO L93 Difference]: Finished difference Result 880 states and 1164 transitions. [2021-12-07 00:12:08,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:12:08,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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 42 [2021-12-07 00:12:08,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:08,496 INFO L225 Difference]: With dead ends: 880 [2021-12-07 00:12:08,496 INFO L226 Difference]: Without dead ends: 587 [2021-12-07 00:12:08,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:12:08,498 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 104 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:08,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 461 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:12:08,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-12-07 00:12:08,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2021-12-07 00:12:08,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 479 states have (on average 1.2379958246346556) internal successors, (593), 515 states have internal predecessors, (593), 53 states have call successors, (53), 47 states have call predecessors, (53), 52 states have return successors, (94), 50 states have call predecessors, (94), 53 states have call successors, (94) [2021-12-07 00:12:08,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 740 transitions. [2021-12-07 00:12:08,530 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 740 transitions. Word has length 42 [2021-12-07 00:12:08,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:08,530 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 740 transitions. [2021-12-07 00:12:08,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-12-07 00:12:08,530 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 740 transitions. [2021-12-07 00:12:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-07 00:12:08,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:08,532 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2021-12-07 00:12:08,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:12:08,533 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:08,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:08,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1851090597, now seen corresponding path program 1 times [2021-12-07 00:12:08,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:08,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801970857] [2021-12-07 00:12:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:08,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:08,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-07 00:12:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:08,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:12:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:08,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-07 00:12:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:12:08,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:12:08,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801970857] [2021-12-07 00:12:08,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801970857] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:12:08,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293194169] [2021-12-07 00:12:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:08,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:12:08,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:12:08,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:12:08,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:12:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:12:08,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 00:12:08,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:12:08,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:12:08,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:12:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:12:08,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293194169] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:12:08,913 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:12:08,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 8 [2021-12-07 00:12:08,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628375505] [2021-12-07 00:12:08,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:12:08,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:12:08,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:12:08,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:12:08,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:12:08,915 INFO L87 Difference]: Start difference. First operand 585 states and 740 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:09,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:12:09,167 INFO L93 Difference]: Finished difference Result 1351 states and 1796 transitions. [2021-12-07 00:12:09,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-07 00:12:09,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 67 [2021-12-07 00:12:09,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:12:09,175 INFO L225 Difference]: With dead ends: 1351 [2021-12-07 00:12:09,175 INFO L226 Difference]: Without dead ends: 871 [2021-12-07 00:12:09,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:12:09,179 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 270 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:12:09,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 510 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:12:09,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2021-12-07 00:12:09,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 786. [2021-12-07 00:12:09,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 638 states have (on average 1.2413793103448276) internal successors, (792), 686 states have internal predecessors, (792), 74 states have call successors, (74), 66 states have call predecessors, (74), 73 states have return successors, (139), 66 states have call predecessors, (139), 74 states have call successors, (139) [2021-12-07 00:12:09,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1005 transitions. [2021-12-07 00:12:09,242 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1005 transitions. Word has length 67 [2021-12-07 00:12:09,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:12:09,242 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 1005 transitions. [2021-12-07 00:12:09,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:12:09,243 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1005 transitions. [2021-12-07 00:12:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-07 00:12:09,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:12:09,246 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-07 00:12:09,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:12:09,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 00:12:09,447 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:12:09,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:12:09,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2119771956, now seen corresponding path program 2 times [2021-12-07 00:12:09,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:12:09,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013582374] [2021-12-07 00:12:09,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:12:09,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:12:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:12:09,470 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 00:12:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 00:12:09,516 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 00:12:09,516 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-07 00:12:09,517 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-07 00:12:09,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 00:12:09,521 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:12:09,524 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 00:12:09,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:12:09 BoogieIcfgContainer [2021-12-07 00:12:09,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 00:12:09,582 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 00:12:09,582 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 00:12:09,582 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 00:12:09,582 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:12:06" (3/4) ... [2021-12-07 00:12:09,583 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-07 00:12:09,639 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 00:12:09,639 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 00:12:09,640 INFO L158 Benchmark]: Toolchain (without parser) took 3643.53ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 79.7MB in the beginning and 43.4MB in the end (delta: 36.3MB). Peak memory consumption was 64.1MB. Max. memory is 16.1GB. [2021-12-07 00:12:09,640 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory was 97.0MB in the beginning and 97.0MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:12:09,641 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.68ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 85.3MB in the end (delta: -5.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-07 00:12:09,641 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.42ms. Allocated memory is still 117.4MB. Free memory was 85.3MB in the beginning and 82.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:12:09,641 INFO L158 Benchmark]: Boogie Preprocessor took 20.77ms. Allocated memory is still 117.4MB. Free memory was 82.7MB in the beginning and 81.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 00:12:09,641 INFO L158 Benchmark]: RCFGBuilder took 359.64ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 65.3MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-07 00:12:09,642 INFO L158 Benchmark]: TraceAbstraction took 2836.16ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 64.8MB in the beginning and 52.8MB in the end (delta: 12.0MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2021-12-07 00:12:09,642 INFO L158 Benchmark]: Witness Printer took 57.97ms. Allocated memory is still 146.8MB. Free memory was 52.8MB in the beginning and 43.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-07 00:12:09,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory was 97.0MB in the beginning and 97.0MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.68ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 85.3MB in the end (delta: -5.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.42ms. Allocated memory is still 117.4MB. Free memory was 85.3MB in the beginning and 82.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.77ms. Allocated memory is still 117.4MB. Free memory was 82.7MB in the beginning and 81.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 359.64ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 65.3MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2836.16ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 64.8MB in the beginning and 52.8MB in the end (delta: 12.0MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. * Witness Printer took 57.97ms. Allocated memory is still 146.8MB. Free memory was 52.8MB in the beginning and 43.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. 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: 762]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L248] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L565] int pumpRunning = 0; [L566] int systemActive = 1; [L767] int cleanupTimeShifts = 4; [L863] int waterLevel = 1; [L864] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L840] int retValue_acc ; [L841] int tmp ; [L845] FCALL select_helpers() [L846] FCALL select_features() [L847] CALL, EXPR valid_product() [L474] int retValue_acc ; [L477] retValue_acc = 1 [L478] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L847] RET, EXPR valid_product() [L847] tmp = valid_product() [L849] COND TRUE \read(tmp) [L851] FCALL setup() [L852] CALL runTest() [L834] CALL test() [L490] int splverifierCounter ; [L491] int tmp ; [L492] int tmp___0 ; [L493] int tmp___1 ; [L494] int tmp___2 ; [L497] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L499] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L501] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L507] tmp = __VERIFIER_nondet_int() [L509] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L511] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L881] COND TRUE waterLevel < 2 [L882] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L511] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L517] tmp___0 = __VERIFIER_nondet_int() [L519] 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] [L527] tmp___2 = __VERIFIER_nondet_int() [L529] COND FALSE !(\read(tmp___2)) [L535] tmp___1 = __VERIFIER_nondet_int() [L537] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L546] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L572] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L579] COND TRUE \read(systemActive) [L581] CALL processEnvironment() [L601] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L604] COND TRUE ! pumpRunning [L606] CALL, EXPR isHighWaterLevel() [L716] int retValue_acc ; [L717] int tmp ; [L718] int tmp___0 ; [L722] CALL, EXPR isHighWaterSensorDry() [L943] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L946] COND FALSE !(waterLevel < 2) [L950] retValue_acc = 0 [L951] 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=1, waterLevel=2] [L722] RET, EXPR isHighWaterSensorDry() [L722] tmp = isHighWaterSensorDry() [L724] COND FALSE !(\read(tmp)) [L727] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L729] retValue_acc = tmp___0 [L730] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L606] RET, EXPR isHighWaterLevel() [L606] tmp = isHighWaterLevel() [L608] COND TRUE \read(tmp) [L610] CALL activatePump() [L635] int tmp ; [L639] CALL, EXPR isMethaneAlarm() [L660] int retValue_acc ; [L664] CALL, EXPR isMethaneLevelCritical() [L902] int retValue_acc ; [L905] retValue_acc = methaneLevelCritical [L906] 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=1, waterLevel=2] [L664] RET, EXPR isMethaneLevelCritical() [L664] retValue_acc = isMethaneLevelCritical() [L666] 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=1, waterLevel=2] [L639] RET, EXPR isMethaneAlarm() [L639] tmp = isMethaneAlarm() [L641] COND FALSE !(\read(tmp)) [L645] CALL activatePump__wrappee__highWaterSensor() [L629] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L645] RET activatePump__wrappee__highWaterSensor() [L610] RET activatePump() [L581] RET processEnvironment() [L587] CALL __utac_acc__Specification4_spec__1() [L54] int tmp ; [L55] int tmp___0 ; [L59] CALL, EXPR getWaterLevel() [L934] int retValue_acc ; [L937] retValue_acc = waterLevel [L938] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L59] RET, EXPR getWaterLevel() [L59] tmp = getWaterLevel() [L61] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L587] RET __utac_acc__Specification4_spec__1() [L546] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L499] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L501] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L507] tmp = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L517] tmp___0 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L527] tmp___2 = __VERIFIER_nondet_int() [L529] COND FALSE !(\read(tmp___2)) [L535] tmp___1 = __VERIFIER_nondet_int() [L537] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L546] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L572] COND TRUE \read(pumpRunning) [L574] CALL lowerWaterLevel() [L869] COND TRUE waterLevel > 0 [L870] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L574] RET lowerWaterLevel() [L579] COND TRUE \read(systemActive) [L581] CALL processEnvironment() [L601] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L604] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L619] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L581] RET processEnvironment() [L587] CALL __utac_acc__Specification4_spec__1() [L54] int tmp ; [L55] int tmp___0 ; [L59] CALL, EXPR getWaterLevel() [L934] int retValue_acc ; [L937] retValue_acc = waterLevel [L938] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L59] RET, EXPR getWaterLevel() [L59] tmp = getWaterLevel() [L61] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L587] RET __utac_acc__Specification4_spec__1() [L546] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L499] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L501] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L507] tmp = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L517] tmp___0 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L527] tmp___2 = __VERIFIER_nondet_int() [L529] COND FALSE !(\read(tmp___2)) [L535] tmp___1 = __VERIFIER_nondet_int() [L537] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L546] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L572] COND TRUE \read(pumpRunning) [L574] CALL lowerWaterLevel() [L869] COND TRUE waterLevel > 0 [L870] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L574] RET lowerWaterLevel() [L579] COND TRUE \read(systemActive) [L581] CALL processEnvironment() [L601] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L604] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L619] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L581] RET processEnvironment() [L587] CALL __utac_acc__Specification4_spec__1() [L54] int tmp ; [L55] int tmp___0 ; [L59] CALL, EXPR getWaterLevel() [L934] int retValue_acc ; [L937] retValue_acc = waterLevel [L938] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L59] RET, EXPR getWaterLevel() [L59] tmp = getWaterLevel() [L61] COND TRUE tmp == 0 [L63] CALL, EXPR isPumpRunning() [L671] int retValue_acc ; [L674] retValue_acc = pumpRunning [L675] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L63] RET, EXPR isPumpRunning() [L63] tmp___0 = isPumpRunning() [L65] COND TRUE \read(tmp___0) [L67] CALL __automaton_fail() [L762] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1141 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1121 mSDsluCounter, 3030 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2129 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 650 IncrementalHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 901 mSDtfsCounter, 650 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 232 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=786occurred in iteration=10, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 344 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 506 NumberOfCodeBlocks, 506 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 469 ConstructedInterpolants, 0 QuantifiedInterpolants, 944 SizeOfPredicates, 4 NumberOfNonLiveVariables, 410 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 38/51 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! [2021-12-07 00:12:09,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_828e5a66-ef60-4b74-89d2-6785f5518124/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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