./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 637e567dc685efcee308b97525909830094648d3754bb07704f538b9a7ab34e7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:04,842 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:04,916 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:40:04,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:04,923 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:04,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:04,957 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:04,958 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:04,960 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:04,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:04,963 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:04,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:04,965 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:04,970 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:04,970 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:40:04,971 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:04,971 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:04,972 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:04,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:04,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:40:04,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:04,974 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:40:04,974 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:04,975 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:04,975 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:04,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:04,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:04,977 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:04,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:04,978 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:04,978 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:04,979 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:40:04,979 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:04,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:04,980 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:04,980 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:40:04,980 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:04,981 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:04,981 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:04,981 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 637e567dc685efcee308b97525909830094648d3754bb07704f538b9a7ab34e7 [2023-11-19 07:40:05,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:05,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:05,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:05,378 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:05,378 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:05,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c [2023-11-19 07:40:08,471 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:08,808 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:08,823 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c [2023-11-19 07:40:08,838 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu/data/bf29c4b2e/8734adf590a7420d893cba7c49564a57/FLAG65f8a0891 [2023-11-19 07:40:08,854 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu/data/bf29c4b2e/8734adf590a7420d893cba7c49564a57 [2023-11-19 07:40:08,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:08,858 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:08,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:08,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:08,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:08,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:08" (1/1) ... [2023-11-19 07:40:08,868 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f825eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:08, skipping insertion in model container [2023-11-19 07:40:08,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:08" (1/1) ... [2023-11-19 07:40:08,954 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:09,180 WARN L240 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_7efc8775-e2e1-4a93-a30a-da844d865a32/sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c[1605,1618] [2023-11-19 07:40:09,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:09,376 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:09,393 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2023-11-19 07:40:09,395 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [58] [2023-11-19 07:40:09,395 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [162] [2023-11-19 07:40:09,396 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [197] [2023-11-19 07:40:09,396 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [563] [2023-11-19 07:40:09,397 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [631] [2023-11-19 07:40:09,397 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [849] [2023-11-19 07:40:09,397 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [944] [2023-11-19 07:40:09,405 WARN L240 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_7efc8775-e2e1-4a93-a30a-da844d865a32/sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c[1605,1618] [2023-11-19 07:40:09,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:09,524 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:09,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:09 WrapperNode [2023-11-19 07:40:09,525 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:09,526 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:09,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:09,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:09,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:09" (1/1) ... [2023-11-19 07:40:09,573 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:09" (1/1) ... [2023-11-19 07:40:09,608 INFO L138 Inliner]: procedures = 55, calls = 102, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 200 [2023-11-19 07:40:09,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:09,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:09,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:09,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:09,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:09" (1/1) ... [2023-11-19 07:40:09,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:09" (1/1) ... [2023-11-19 07:40:09,623 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:09" (1/1) ... [2023-11-19 07:40:09,623 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:09" (1/1) ... [2023-11-19 07:40:09,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:09" (1/1) ... [2023-11-19 07:40:09,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:09" (1/1) ... [2023-11-19 07:40:09,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:09" (1/1) ... [2023-11-19 07:40:09,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:09" (1/1) ... [2023-11-19 07:40:09,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:09,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:09,643 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:09,643 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:09,644 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:09" (1/1) ... [2023-11-19 07:40:09,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:09,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:09,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:09,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:09,719 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-19 07:40:09,720 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-19 07:40:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-11-19 07:40:09,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-11-19 07:40:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-19 07:40:09,721 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-19 07:40:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-19 07:40:09,721 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-19 07:40:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-19 07:40:09,721 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-19 07:40:09,722 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-11-19 07:40:09,722 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-11-19 07:40:09,722 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-11-19 07:40:09,722 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-11-19 07:40:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-11-19 07:40:09,723 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-11-19 07:40:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:40:09,723 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-19 07:40:09,723 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-19 07:40:09,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:09,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:09,812 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:09,838 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:10,156 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:10,173 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:10,173 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:40:10,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:10 BoogieIcfgContainer [2023-11-19 07:40:10,178 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:10,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:10,181 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:10,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:10,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:08" (1/3) ... [2023-11-19 07:40:10,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb6a695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:10, skipping insertion in model container [2023-11-19 07:40:10,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:09" (2/3) ... [2023-11-19 07:40:10,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb6a695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:10, skipping insertion in model container [2023-11-19 07:40:10,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:10" (3/3) ... [2023-11-19 07:40:10,187 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product47.cil.c [2023-11-19 07:40:10,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:10,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:40:10,258 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:10,265 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@36642d36, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:10,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:40:10,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 84 states have internal predecessors, (103), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 07:40:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 07:40:10,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:10,279 INFO L195 NwaCegarLoop]: 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] [2023-11-19 07:40:10,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:10,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:10,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1241613361, now seen corresponding path program 1 times [2023-11-19 07:40:10,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:10,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233306533] [2023-11-19 07:40:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:10,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:10,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 07:40:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:10,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:10,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233306533] [2023-11-19 07:40:10,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233306533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:10,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:10,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:10,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303509094] [2023-11-19 07:40:10,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:10,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:40:10,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:10,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:40:10,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:40:10,651 INFO L87 Difference]: Start difference. First operand has 102 states, 75 states have (on average 1.3733333333333333) internal successors, (103), 84 states have internal predecessors, (103), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:40:10,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:10,728 INFO L93 Difference]: Finished difference Result 196 states and 265 transitions. [2023-11-19 07:40:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:40:10,730 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-11-19 07:40:10,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:10,742 INFO L225 Difference]: With dead ends: 196 [2023-11-19 07:40:10,743 INFO L226 Difference]: Without dead ends: 93 [2023-11-19 07:40:10,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:40:10,755 INFO L413 NwaCegarLoop]: 129 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, 129 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 [2023-11-19 07:40:10,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:10,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-19 07:40:10,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-11-19 07:40:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 68 states have (on average 1.3088235294117647) internal successors, (89), 76 states have internal predecessors, (89), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:40:10,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 120 transitions. [2023-11-19 07:40:10,828 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 120 transitions. Word has length 25 [2023-11-19 07:40:10,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:10,830 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 120 transitions. [2023-11-19 07:40:10,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:40:10,830 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 120 transitions. [2023-11-19 07:40:10,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 07:40:10,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:10,836 INFO L195 NwaCegarLoop]: 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] [2023-11-19 07:40:10,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:40:10,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:10,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:10,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1385428186, now seen corresponding path program 1 times [2023-11-19 07:40:10,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:10,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442267852] [2023-11-19 07:40:10,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:10,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-19 07:40:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:11,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:11,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442267852] [2023-11-19 07:40:11,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442267852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:11,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:11,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:11,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310267286] [2023-11-19 07:40:11,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:11,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:11,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:11,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:11,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:11,031 INFO L87 Difference]: Start difference. First operand 93 states and 120 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:40:11,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:11,052 INFO L93 Difference]: Finished difference Result 148 states and 190 transitions. [2023-11-19 07:40:11,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:11,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-11-19 07:40:11,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:11,056 INFO L225 Difference]: With dead ends: 148 [2023-11-19 07:40:11,057 INFO L226 Difference]: Without dead ends: 84 [2023-11-19 07:40:11,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:11,068 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 16 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 193 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 [2023-11-19 07:40:11,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 193 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:11,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-19 07:40:11,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-11-19 07:40:11,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.3225806451612903) internal successors, (82), 70 states have internal predecessors, (82), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:40:11,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 108 transitions. [2023-11-19 07:40:11,096 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 108 transitions. Word has length 26 [2023-11-19 07:40:11,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:11,097 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 108 transitions. [2023-11-19 07:40:11,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:40:11,098 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 108 transitions. [2023-11-19 07:40:11,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:40:11,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:11,104 INFO L195 NwaCegarLoop]: 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] [2023-11-19 07:40:11,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:40:11,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:11,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:11,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1349526136, now seen corresponding path program 1 times [2023-11-19 07:40:11,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:11,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290191798] [2023-11-19 07:40:11,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:11,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:11,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 07:40:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:11,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:11,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:11,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290191798] [2023-11-19 07:40:11,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290191798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:11,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:11,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:40:11,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742010724] [2023-11-19 07:40:11,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:11,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:11,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:11,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:11,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:11,368 INFO L87 Difference]: Start difference. First operand 84 states and 108 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:40:11,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:11,590 INFO L93 Difference]: Finished difference Result 281 states and 368 transitions. [2023-11-19 07:40:11,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:11,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2023-11-19 07:40:11,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:11,594 INFO L225 Difference]: With dead ends: 281 [2023-11-19 07:40:11,594 INFO L226 Difference]: Without dead ends: 204 [2023-11-19 07:40:11,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:40:11,597 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 220 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:11,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 511 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:40:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-19 07:40:11,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 198. [2023-11-19 07:40:11,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 145 states have (on average 1.3517241379310345) internal successors, (196), 163 states have internal predecessors, (196), 31 states have call successors, (31), 21 states have call predecessors, (31), 21 states have return successors, (32), 23 states have call predecessors, (32), 31 states have call successors, (32) [2023-11-19 07:40:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2023-11-19 07:40:11,630 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 30 [2023-11-19 07:40:11,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:11,631 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2023-11-19 07:40:11,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:40:11,631 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2023-11-19 07:40:11,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 07:40:11,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:11,633 INFO L195 NwaCegarLoop]: 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] [2023-11-19 07:40:11,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:40:11,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:11,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:11,635 INFO L85 PathProgramCache]: Analyzing trace with hash 260625278, now seen corresponding path program 1 times [2023-11-19 07:40:11,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:11,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300797139] [2023-11-19 07:40:11,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:11,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:11,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:40:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:11,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:11,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300797139] [2023-11-19 07:40:11,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300797139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:11,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:11,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:11,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105085328] [2023-11-19 07:40:11,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:11,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:11,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:11,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:11,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:11,894 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:40:11,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:11,991 INFO L93 Difference]: Finished difference Result 572 states and 772 transitions. [2023-11-19 07:40:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:11,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2023-11-19 07:40:11,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:12,003 INFO L225 Difference]: With dead ends: 572 [2023-11-19 07:40:12,003 INFO L226 Difference]: Without dead ends: 381 [2023-11-19 07:40:12,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:12,014 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 75 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:12,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 404 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:12,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-19 07:40:12,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 372. [2023-11-19 07:40:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 270 states have (on average 1.325925925925926) internal successors, (358), 302 states have internal predecessors, (358), 62 states have call successors, (62), 42 states have call predecessors, (62), 39 states have return successors, (68), 43 states have call predecessors, (68), 62 states have call successors, (68) [2023-11-19 07:40:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 488 transitions. [2023-11-19 07:40:12,110 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 488 transitions. Word has length 34 [2023-11-19 07:40:12,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:12,110 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 488 transitions. [2023-11-19 07:40:12,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:40:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 488 transitions. [2023-11-19 07:40:12,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 07:40:12,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:12,115 INFO L195 NwaCegarLoop]: 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] [2023-11-19 07:40:12,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:40:12,116 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:12,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:12,116 INFO L85 PathProgramCache]: Analyzing trace with hash -862427773, now seen corresponding path program 1 times [2023-11-19 07:40:12,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:12,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781219199] [2023-11-19 07:40:12,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:12,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:12,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-19 07:40:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:12,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:12,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781219199] [2023-11-19 07:40:12,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781219199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:12,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:12,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:12,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525116935] [2023-11-19 07:40:12,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:12,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:12,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:12,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:12,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:12,217 INFO L87 Difference]: Start difference. First operand 372 states and 488 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:40:12,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:12,300 INFO L93 Difference]: Finished difference Result 882 states and 1177 transitions. [2023-11-19 07:40:12,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:12,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2023-11-19 07:40:12,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:12,305 INFO L225 Difference]: With dead ends: 882 [2023-11-19 07:40:12,306 INFO L226 Difference]: Without dead ends: 517 [2023-11-19 07:40:12,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:12,309 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 69 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:12,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 172 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:12,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-11-19 07:40:12,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 506. [2023-11-19 07:40:12,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 378 states have (on average 1.2804232804232805) internal successors, (484), 405 states have internal predecessors, (484), 69 states have call successors, (69), 61 states have call predecessors, (69), 58 states have return successors, (91), 63 states have call predecessors, (91), 69 states have call successors, (91) [2023-11-19 07:40:12,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 644 transitions. [2023-11-19 07:40:12,371 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 644 transitions. Word has length 36 [2023-11-19 07:40:12,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:12,372 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 644 transitions. [2023-11-19 07:40:12,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:40:12,373 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 644 transitions. [2023-11-19 07:40:12,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 07:40:12,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:12,378 INFO L195 NwaCegarLoop]: 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] [2023-11-19 07:40:12,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:40:12,378 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:12,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:12,380 INFO L85 PathProgramCache]: Analyzing trace with hash 764839012, now seen corresponding path program 1 times [2023-11-19 07:40:12,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:12,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145669589] [2023-11-19 07:40:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:12,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:12,416 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:40:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:12,467 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:40:12,467 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:40:12,469 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:40:12,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:40:12,474 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-19 07:40:12,478 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:40:12,524 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret51 could not be translated [2023-11-19 07:40:12,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:40:12 BoogieIcfgContainer [2023-11-19 07:40:12,549 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:40:12,550 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:40:12,550 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:40:12,551 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:40:12,551 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:10" (3/4) ... [2023-11-19 07:40:12,552 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 07:40:12,572 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret51 could not be translated [2023-11-19 07:40:12,641 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:40:12,641 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:40:12,641 INFO L158 Benchmark]: Toolchain (without parser) took 3783.36ms. Allocated memory is still 174.1MB. Free memory was 129.2MB in the beginning and 141.9MB in the end (delta: -12.7MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. [2023-11-19 07:40:12,642 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory was 84.2MB in the beginning and 84.2MB in the end (delta: 24.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:40:12,642 INFO L158 Benchmark]: CACSL2BoogieTranslator took 665.53ms. Allocated memory is still 174.1MB. Free memory was 129.0MB in the beginning and 109.6MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:40:12,643 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.08ms. Allocated memory is still 174.1MB. Free memory was 109.6MB in the beginning and 107.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:40:12,643 INFO L158 Benchmark]: Boogie Preprocessor took 32.69ms. Allocated memory is still 174.1MB. Free memory was 107.1MB in the beginning and 105.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:40:12,643 INFO L158 Benchmark]: RCFGBuilder took 535.47ms. Allocated memory is still 174.1MB. Free memory was 105.4MB in the beginning and 133.5MB in the end (delta: -28.0MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2023-11-19 07:40:12,644 INFO L158 Benchmark]: TraceAbstraction took 2369.10ms. Allocated memory is still 174.1MB. Free memory was 132.5MB in the beginning and 65.5MB in the end (delta: 67.0MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. [2023-11-19 07:40:12,644 INFO L158 Benchmark]: Witness Printer took 90.72ms. Allocated memory is still 174.1MB. Free memory was 65.5MB in the beginning and 141.9MB in the end (delta: -76.4MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2023-11-19 07:40:12,646 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory was 84.2MB in the beginning and 84.2MB in the end (delta: 24.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 665.53ms. Allocated memory is still 174.1MB. Free memory was 129.0MB in the beginning and 109.6MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.08ms. Allocated memory is still 174.1MB. Free memory was 109.6MB in the beginning and 107.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.69ms. Allocated memory is still 174.1MB. Free memory was 107.1MB in the beginning and 105.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 535.47ms. Allocated memory is still 174.1MB. Free memory was 105.4MB in the beginning and 133.5MB in the end (delta: -28.0MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2369.10ms. Allocated memory is still 174.1MB. Free memory was 132.5MB in the beginning and 65.5MB in the end (delta: 67.0MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. * Witness Printer took 90.72ms. Allocated memory is still 174.1MB. Free memory was 65.5MB in the beginning and 141.9MB in the end (delta: -76.4MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] - GenericResultAtLocation [Line: 58]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [58] - GenericResultAtLocation [Line: 162]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [162] - GenericResultAtLocation [Line: 197]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [197] - GenericResultAtLocation [Line: 563]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [563] - GenericResultAtLocation [Line: 631]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [631] - GenericResultAtLocation [Line: 849]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [849] - GenericResultAtLocation [Line: 944]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [944] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret51 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret51 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 54]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L59] int cleanupTimeShifts = 4; [L367] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L639] int pumpRunning = 0; [L640] int systemActive = 1; [L851] int waterLevel = 1; [L852] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L140] int retValue_acc ; [L141] int tmp ; [L145] FCALL select_helpers() [L146] FCALL select_features() [L147] CALL, EXPR valid_product() [L189] int retValue_acc ; [L192] retValue_acc = 1 [L193] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L147] RET, EXPR valid_product() [L147] tmp = valid_product() [L149] COND TRUE \read(tmp) [L151] FCALL setup() [L152] CALL runTest() [L131] CALL test() [L566] int splverifierCounter ; [L567] int tmp ; [L568] int tmp___0 ; [L569] int tmp___1 ; [L570] int tmp___2 ; [L573] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L575] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L577] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L583] tmp = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L587] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L869] COND TRUE waterLevel < 2 [L870] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L587] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L593] tmp___0 = __VERIFIER_nondet_int() [L595] 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] [L603] tmp___2 = __VERIFIER_nondet_int() [L605] COND FALSE !(\read(tmp___2)) [L609] tmp___1 = __VERIFIER_nondet_int() [L611] COND TRUE \read(tmp___1) [L613] CALL stopSystem() [L838] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L845] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L613] RET stopSystem() [L620] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L647] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L654] COND FALSE !(\read(systemActive)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L662] CALL __utac_acc__Specification3_spec__1() [L946] int tmp ; [L947] int tmp___0 ; [L948] int tmp___1 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L952] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L890] int retValue_acc ; [L893] retValue_acc = methaneLevelCritical [L894] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=0, waterLevel=2] [L952] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L952] tmp = isMethaneLevelCritical() [L954] COND FALSE !(\read(tmp)) [L958] CALL, EXPR getWaterLevel() [L922] int retValue_acc ; [L925] retValue_acc = waterLevel [L926] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=2, systemActive=0, waterLevel=2] [L958] RET, EXPR getWaterLevel() [L958] tmp___0 = getWaterLevel() [L960] COND TRUE tmp___0 == 2 [L962] CALL, EXPR isPumpRunning() [L771] int retValue_acc ; [L774] retValue_acc = pumpRunning [L775] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=0, waterLevel=2] [L962] RET, EXPR isPumpRunning() [L962] tmp___1 = isPumpRunning() [L964] COND FALSE !(\read(tmp___1)) [L968] CALL __automaton_fail() [L54] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 102 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 384 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 380 mSDsluCounter, 1409 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 846 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 145 IncrementalHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 563 mSDtfsCounter, 145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=506occurred in iteration=5, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 290 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-19 07:40:12,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7efc8775-e2e1-4a93-a30a-da844d865a32/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE