./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0552f986eafe304f33f56d4376c7c6a56e2d691e1035259c5c13e13b2a7157c1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:17:21,761 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:17:21,838 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:17:21,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:17:21,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:17:21,883 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:17:21,884 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:17:21,885 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:17:21,886 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:17:21,886 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:17:21,887 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:17:21,888 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:17:21,889 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:17:21,889 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:17:21,890 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:17:21,895 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:17:21,897 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:17:21,902 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:17:21,903 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:17:21,904 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:17:21,906 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:17:21,907 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:17:21,908 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:17:21,909 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:17:21,909 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:17:21,910 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:17:21,910 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:17:21,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:17:21,912 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:17:21,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:17:21,914 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:17:21,914 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:17:21,915 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:17:21,915 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:17:21,915 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:17:21,916 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:17:21,916 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:17:21,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:21,917 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:17:21,917 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:17:21,918 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:17:21,919 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:17:21,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:17:21,920 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:17:21,920 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:17:21,921 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:17:21,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:17:21,921 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0552f986eafe304f33f56d4376c7c6a56e2d691e1035259c5c13e13b2a7157c1 [2023-11-23 21:17:22,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:17:22,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:17:22,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:17:22,285 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:17:22,286 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:17:22,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c [2023-11-23 21:17:25,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:17:25,989 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:17:25,990 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c [2023-11-23 21:17:26,010 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/data/7aa3ebeea/ff00bc06c2584712bd2d6a9f7dc06767/FLAG1602f1cf3 [2023-11-23 21:17:26,031 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/data/7aa3ebeea/ff00bc06c2584712bd2d6a9f7dc06767 [2023-11-23 21:17:26,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:17:26,044 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:17:26,050 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:26,051 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:17:26,057 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:17:26,058 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:26" (1/1) ... [2023-11-23 21:17:26,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1077017c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:26, skipping insertion in model container [2023-11-23 21:17:26,060 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:17:26" (1/1) ... [2023-11-23 21:17:26,146 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:17:26,533 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_b0971261-4b66-43d7-bde2-fbea35f24a99/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c[15143,15156] [2023-11-23 21:17:26,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:26,615 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:17:26,628 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] [2023-11-23 21:17:26,630 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [415] [2023-11-23 21:17:26,630 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [453] [2023-11-23 21:17:26,631 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [562] [2023-11-23 21:17:26,631 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [664] [2023-11-23 21:17:26,631 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [699] [2023-11-23 21:17:26,632 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [708] [2023-11-23 21:17:26,632 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [776] [2023-11-23 21:17:26,778 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_b0971261-4b66-43d7-bde2-fbea35f24a99/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c[15143,15156] [2023-11-23 21:17:26,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:17:26,834 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:17:26,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:26 WrapperNode [2023-11-23 21:17:26,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:17:26,837 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:26,837 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:17:26,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:17:26,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:26" (1/1) ... [2023-11-23 21:17:26,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:26" (1/1) ... [2023-11-23 21:17:26,907 INFO L138 Inliner]: procedures = 56, calls = 100, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 213 [2023-11-23 21:17:26,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:17:26,909 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:17:26,909 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:17:26,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:17:26,923 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:26" (1/1) ... [2023-11-23 21:17:26,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:26" (1/1) ... [2023-11-23 21:17:26,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:26" (1/1) ... [2023-11-23 21:17:26,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:26" (1/1) ... [2023-11-23 21:17:26,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:26" (1/1) ... [2023-11-23 21:17:26,961 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:26" (1/1) ... [2023-11-23 21:17:26,977 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:26" (1/1) ... [2023-11-23 21:17:26,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:26" (1/1) ... [2023-11-23 21:17:26,983 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:17:26,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:17:26,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:17:26,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:17:26,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:26" (1/1) ... [2023-11-23 21:17:27,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:27,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:27,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:17:27,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:17:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:17:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-23 21:17:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-23 21:17:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-23 21:17:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-23 21:17:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-23 21:17:27,123 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-23 21:17:27,124 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-11-23 21:17:27,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-11-23 21:17:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-11-23 21:17:27,126 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-11-23 21:17:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-23 21:17:27,126 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-23 21:17:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:17:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-23 21:17:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-23 21:17:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:17:27,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:17:27,253 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:17:27,256 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:17:27,613 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:17:27,820 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:17:27,821 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:17:27,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:27 BoogieIcfgContainer [2023-11-23 21:17:27,823 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:17:27,827 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:17:27,827 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:17:27,832 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:17:27,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:17:26" (1/3) ... [2023-11-23 21:17:27,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1b2a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:27, skipping insertion in model container [2023-11-23 21:17:27,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:17:26" (2/3) ... [2023-11-23 21:17:27,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1b2a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:17:27, skipping insertion in model container [2023-11-23 21:17:27,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:27" (3/3) ... [2023-11-23 21:17:27,836 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product50.cil.c [2023-11-23 21:17:27,862 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:17:27,862 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:17:27,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:17:27,947 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=FINITE_AUTOMATA, 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;@8013608, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:17:27,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:17:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 44 states have internal predecessors, (52), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:17:27,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:17:27,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:27,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:27,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:27,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:27,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2141873407, now seen corresponding path program 1 times [2023-11-23 21:17:27,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:27,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175366609] [2023-11-23 21:17:28,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:28,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:28,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:28,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175366609] [2023-11-23 21:17:28,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175366609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:28,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:28,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:17:28,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325488111] [2023-11-23 21:17:28,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:28,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:17:28,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:28,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:17:28,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:17:28,236 INFO L87 Difference]: Start difference. First operand has 56 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 44 states have internal predecessors, (52), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-11-23 21:17:28,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:28,313 INFO L93 Difference]: Finished difference Result 110 states and 149 transitions. [2023-11-23 21:17:28,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:17:28,316 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 17 [2023-11-23 21:17:28,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:28,327 INFO L225 Difference]: With dead ends: 110 [2023-11-23 21:17:28,328 INFO L226 Difference]: Without dead ends: 51 [2023-11-23 21:17:28,332 INFO L412 NwaCegarLoop]: 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 [2023-11-23 21:17:28,337 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:28,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:17:28,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-23 21:17:28,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-23 21:17:28,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 40 states have internal predecessors, (44), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 21:17:28,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2023-11-23 21:17:28,389 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 17 [2023-11-23 21:17:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:28,389 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2023-11-23 21:17:28,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-11-23 21:17:28,390 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2023-11-23 21:17:28,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:17:28,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:28,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:28,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:17:28,394 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:28,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1580889706, now seen corresponding path program 1 times [2023-11-23 21:17:28,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:28,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835351823] [2023-11-23 21:17:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:28,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:28,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835351823] [2023-11-23 21:17:28,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835351823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:28,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:28,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:17:28,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066284874] [2023-11-23 21:17:28,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:28,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:17:28,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:28,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:17:28,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:17:28,533 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-23 21:17:28,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:28,579 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2023-11-23 21:17:28,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:17:28,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 18 [2023-11-23 21:17:28,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:28,582 INFO L225 Difference]: With dead ends: 79 [2023-11-23 21:17:28,582 INFO L226 Difference]: Without dead ends: 43 [2023-11-23 21:17:28,583 INFO L412 NwaCegarLoop]: 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 [2023-11-23 21:17:28,585 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:28,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 69 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:17:28,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-23 21:17:28,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-23 21:17:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 35 states have internal predecessors, (38), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 21:17:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2023-11-23 21:17:28,596 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 18 [2023-11-23 21:17:28,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:28,596 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2023-11-23 21:17:28,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-23 21:17:28,597 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2023-11-23 21:17:28,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:17:28,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:28,599 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] [2023-11-23 21:17:28,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:17:28,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:28,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:28,600 INFO L85 PathProgramCache]: Analyzing trace with hash 195601986, now seen corresponding path program 1 times [2023-11-23 21:17:28,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:28,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349299033] [2023-11-23 21:17:28,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:28,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:28,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:28,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349299033] [2023-11-23 21:17:28,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349299033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:28,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:28,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:17:28,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524176361] [2023-11-23 21:17:28,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:28,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:17:28,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:28,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:17:28,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:17:28,857 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-11-23 21:17:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:28,950 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2023-11-23 21:17:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:17:28,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 20 [2023-11-23 21:17:28,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:28,953 INFO L225 Difference]: With dead ends: 84 [2023-11-23 21:17:28,953 INFO L226 Difference]: Without dead ends: 43 [2023-11-23 21:17:28,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:17:28,956 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 49 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:28,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 49 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:17:28,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-23 21:17:28,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-23 21:17:28,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 35 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 21:17:28,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2023-11-23 21:17:28,968 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 20 [2023-11-23 21:17:28,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:28,969 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2023-11-23 21:17:28,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-11-23 21:17:28,970 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2023-11-23 21:17:28,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 21:17:28,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:28,971 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] [2023-11-23 21:17:28,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:17:28,972 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:28,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:28,973 INFO L85 PathProgramCache]: Analyzing trace with hash -445461651, now seen corresponding path program 1 times [2023-11-23 21:17:28,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:28,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47516475] [2023-11-23 21:17:28,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:28,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:29,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:29,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47516475] [2023-11-23 21:17:29,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47516475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:29,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:29,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:17:29,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162842322] [2023-11-23 21:17:29,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:29,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:17:29,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:29,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:17:29,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:17:29,094 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-23 21:17:29,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:29,161 INFO L93 Difference]: Finished difference Result 119 states and 150 transitions. [2023-11-23 21:17:29,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:17:29,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 23 [2023-11-23 21:17:29,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:29,164 INFO L225 Difference]: With dead ends: 119 [2023-11-23 21:17:29,164 INFO L226 Difference]: Without dead ends: 78 [2023-11-23 21:17:29,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:17:29,167 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 35 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:29,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 83 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:17:29,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-23 21:17:29,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2023-11-23 21:17:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 58 states have internal predecessors, (65), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2023-11-23 21:17:29,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2023-11-23 21:17:29,189 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 23 [2023-11-23 21:17:29,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:29,189 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2023-11-23 21:17:29,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-23 21:17:29,190 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2023-11-23 21:17:29,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 21:17:29,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:29,191 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] [2023-11-23 21:17:29,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:17:29,192 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:29,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1166185331, now seen corresponding path program 1 times [2023-11-23 21:17:29,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:29,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964827853] [2023-11-23 21:17:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:29,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:29,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:29,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964827853] [2023-11-23 21:17:29,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964827853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:29,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:29,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:17:29,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487452074] [2023-11-23 21:17:29,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:29,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:17:29,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:29,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:17:29,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:17:29,580 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:17:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:29,806 INFO L93 Difference]: Finished difference Result 224 states and 276 transitions. [2023-11-23 21:17:29,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:17:29,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2023-11-23 21:17:29,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:29,809 INFO L225 Difference]: With dead ends: 224 [2023-11-23 21:17:29,810 INFO L226 Difference]: Without dead ends: 150 [2023-11-23 21:17:29,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:17:29,812 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 73 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:29,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 174 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:17:29,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-23 21:17:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122. [2023-11-23 21:17:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 83 states have (on average 1.2650602409638554) internal successors, (105), 91 states have internal predecessors, (105), 18 states have call successors, (18), 18 states have call predecessors, (18), 20 states have return successors, (24), 19 states have call predecessors, (24), 18 states have call successors, (24) [2023-11-23 21:17:29,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 147 transitions. [2023-11-23 21:17:29,839 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 147 transitions. Word has length 28 [2023-11-23 21:17:29,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:29,840 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 147 transitions. [2023-11-23 21:17:29,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:17:29,840 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 147 transitions. [2023-11-23 21:17:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 21:17:29,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:29,842 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] [2023-11-23 21:17:29,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:17:29,843 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:29,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:29,843 INFO L85 PathProgramCache]: Analyzing trace with hash 740262994, now seen corresponding path program 1 times [2023-11-23 21:17:29,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:29,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499154800] [2023-11-23 21:17:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:29,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:29,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:29,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499154800] [2023-11-23 21:17:29,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499154800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:29,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:29,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:17:29,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260512608] [2023-11-23 21:17:29,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:29,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:17:29,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:29,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:17:29,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:17:29,922 INFO L87 Difference]: Start difference. First operand 122 states and 147 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:17:30,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:30,013 INFO L93 Difference]: Finished difference Result 211 states and 257 transitions. [2023-11-23 21:17:30,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:17:30,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-11-23 21:17:30,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:30,015 INFO L225 Difference]: With dead ends: 211 [2023-11-23 21:17:30,015 INFO L226 Difference]: Without dead ends: 124 [2023-11-23 21:17:30,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:17:30,017 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 35 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:30,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 132 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:17:30,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-23 21:17:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2023-11-23 21:17:30,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 83 states have (on average 1.216867469879518) internal successors, (101), 91 states have internal predecessors, (101), 18 states have call successors, (18), 18 states have call predecessors, (18), 20 states have return successors, (21), 19 states have call predecessors, (21), 18 states have call successors, (21) [2023-11-23 21:17:30,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 140 transitions. [2023-11-23 21:17:30,059 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 140 transitions. Word has length 31 [2023-11-23 21:17:30,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:30,060 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 140 transitions. [2023-11-23 21:17:30,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:17:30,060 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 140 transitions. [2023-11-23 21:17:30,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 21:17:30,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:30,062 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] [2023-11-23 21:17:30,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:17:30,062 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:30,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:30,063 INFO L85 PathProgramCache]: Analyzing trace with hash -2074763814, now seen corresponding path program 1 times [2023-11-23 21:17:30,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:30,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654361138] [2023-11-23 21:17:30,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:30,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:30,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:30,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654361138] [2023-11-23 21:17:30,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654361138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:30,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:30,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:17:30,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737858345] [2023-11-23 21:17:30,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:30,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:17:30,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:30,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:17:30,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:17:30,224 INFO L87 Difference]: Start difference. First operand 122 states and 140 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:17:30,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:30,324 INFO L93 Difference]: Finished difference Result 244 states and 281 transitions. [2023-11-23 21:17:30,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:17:30,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-11-23 21:17:30,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:30,331 INFO L225 Difference]: With dead ends: 244 [2023-11-23 21:17:30,331 INFO L226 Difference]: Without dead ends: 124 [2023-11-23 21:17:30,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:17:30,335 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 42 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:30,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 127 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:17:30,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-23 21:17:30,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2023-11-23 21:17:30,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 90 states have internal predecessors, (98), 18 states have call successors, (18), 18 states have call predecessors, (18), 20 states have return successors, (21), 19 states have call predecessors, (21), 18 states have call successors, (21) [2023-11-23 21:17:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 137 transitions. [2023-11-23 21:17:30,377 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 137 transitions. Word has length 31 [2023-11-23 21:17:30,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:30,378 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 137 transitions. [2023-11-23 21:17:30,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:17:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 137 transitions. [2023-11-23 21:17:30,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 21:17:30,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:30,380 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] [2023-11-23 21:17:30,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:17:30,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:30,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:30,381 INFO L85 PathProgramCache]: Analyzing trace with hash 574731253, now seen corresponding path program 1 times [2023-11-23 21:17:30,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:30,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117450385] [2023-11-23 21:17:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:30,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:30,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:30,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117450385] [2023-11-23 21:17:30,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117450385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:30,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:17:30,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:17:30,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096834022] [2023-11-23 21:17:30,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:30,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:17:30,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:30,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:17:30,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:17:30,790 INFO L87 Difference]: Start difference. First operand 121 states and 137 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:17:31,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:31,330 INFO L93 Difference]: Finished difference Result 356 states and 417 transitions. [2023-11-23 21:17:31,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 21:17:31,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2023-11-23 21:17:31,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:31,334 INFO L225 Difference]: With dead ends: 356 [2023-11-23 21:17:31,334 INFO L226 Difference]: Without dead ends: 269 [2023-11-23 21:17:31,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-11-23 21:17:31,337 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 154 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:31,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 245 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:17:31,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-23 21:17:31,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 225. [2023-11-23 21:17:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 155 states have (on average 1.206451612903226) internal successors, (187), 168 states have internal predecessors, (187), 33 states have call successors, (33), 33 states have call predecessors, (33), 36 states have return successors, (39), 33 states have call predecessors, (39), 33 states have call successors, (39) [2023-11-23 21:17:31,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 259 transitions. [2023-11-23 21:17:31,392 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 259 transitions. Word has length 34 [2023-11-23 21:17:31,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:31,392 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 259 transitions. [2023-11-23 21:17:31,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:17:31,393 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 259 transitions. [2023-11-23 21:17:31,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:17:31,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:31,410 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2023-11-23 21:17:31,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:17:31,411 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:31,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:31,412 INFO L85 PathProgramCache]: Analyzing trace with hash 236192386, now seen corresponding path program 1 times [2023-11-23 21:17:31,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:31,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130767360] [2023-11-23 21:17:31,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:31,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:17:31,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:31,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130767360] [2023-11-23 21:17:31,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130767360] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:31,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736130949] [2023-11-23 21:17:31,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:31,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:31,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:31,591 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:17:31,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:17:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:31,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 21:17:31,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:17:32,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 21:17:32,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736130949] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:17:32,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [861590211] [2023-11-23 21:17:32,723 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2023-11-23 21:17:32,724 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:17:32,728 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:17:32,735 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:17:32,736 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:17:37,986 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 120 for LOIs [2023-11-23 21:17:38,030 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 40 for LOIs [2023-11-23 21:17:38,399 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 39 for LOIs [2023-11-23 21:17:38,476 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 40 for LOIs [2023-11-23 21:17:38,487 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:17:42,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [861590211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:42,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:17:42,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [8, 9, 8] total 41 [2023-11-23 21:17:42,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314957997] [2023-11-23 21:17:42,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:42,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 21:17:42,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:42,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 21:17:42,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1426, Unknown=0, NotChecked=0, Total=1640 [2023-11-23 21:17:42,857 INFO L87 Difference]: Start difference. First operand 225 states and 259 transitions. Second operand has 23 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:17:46,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:46,868 INFO L93 Difference]: Finished difference Result 468 states and 545 transitions. [2023-11-23 21:17:46,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-23 21:17:46,869 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 51 [2023-11-23 21:17:46,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:46,872 INFO L225 Difference]: With dead ends: 468 [2023-11-23 21:17:46,872 INFO L226 Difference]: Without dead ends: 305 [2023-11-23 21:17:46,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=337, Invalid=2113, Unknown=0, NotChecked=0, Total=2450 [2023-11-23 21:17:46,876 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 84 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:46,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 283 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:17:46,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-23 21:17:46,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 281. [2023-11-23 21:17:46,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 195 states have (on average 1.1897435897435897) internal successors, (232), 209 states have internal predecessors, (232), 41 states have call successors, (41), 41 states have call predecessors, (41), 44 states have return successors, (47), 40 states have call predecessors, (47), 41 states have call successors, (47) [2023-11-23 21:17:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 320 transitions. [2023-11-23 21:17:46,923 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 320 transitions. Word has length 51 [2023-11-23 21:17:46,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:46,923 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 320 transitions. [2023-11-23 21:17:46,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:17:46,924 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 320 transitions. [2023-11-23 21:17:46,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-23 21:17:46,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:46,926 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2023-11-23 21:17:46,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:47,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-23 21:17:47,144 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:47,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:47,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1578804458, now seen corresponding path program 1 times [2023-11-23 21:17:47,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:47,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459649182] [2023-11-23 21:17:47,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:47,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:17:47,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:47,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459649182] [2023-11-23 21:17:47,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459649182] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:47,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124899381] [2023-11-23 21:17:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:47,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:47,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:47,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:17:47,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:17:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:47,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-23 21:17:47,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:48,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:17:48,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124899381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:48,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:17:48,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 23 [2023-11-23 21:17:48,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12579163] [2023-11-23 21:17:48,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:48,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:17:48,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:48,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:17:48,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2023-11-23 21:17:48,184 INFO L87 Difference]: Start difference. First operand 281 states and 320 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 21:17:48,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:48,841 INFO L93 Difference]: Finished difference Result 524 states and 617 transitions. [2023-11-23 21:17:48,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-23 21:17:48,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 52 [2023-11-23 21:17:48,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:48,845 INFO L225 Difference]: With dead ends: 524 [2023-11-23 21:17:48,846 INFO L226 Difference]: Without dead ends: 359 [2023-11-23 21:17:48,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 21:17:48,848 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 72 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:48,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 176 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:17:48,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-23 21:17:48,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 237. [2023-11-23 21:17:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 161 states have (on average 1.1677018633540373) internal successors, (188), 177 states have internal predecessors, (188), 35 states have call successors, (35), 34 states have call predecessors, (35), 40 states have return successors, (43), 34 states have call predecessors, (43), 35 states have call successors, (43) [2023-11-23 21:17:48,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 266 transitions. [2023-11-23 21:17:48,968 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 266 transitions. Word has length 52 [2023-11-23 21:17:48,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:48,969 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 266 transitions. [2023-11-23 21:17:48,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 21:17:48,969 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 266 transitions. [2023-11-23 21:17:48,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-23 21:17:48,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:48,971 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2023-11-23 21:17:49,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:49,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 21:17:49,172 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:49,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1690965562, now seen corresponding path program 1 times [2023-11-23 21:17:49,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:49,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807947983] [2023-11-23 21:17:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:49,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:17:49,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:49,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807947983] [2023-11-23 21:17:49,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807947983] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:49,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910615225] [2023-11-23 21:17:49,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:49,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:49,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:49,761 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:17:49,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:17:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:49,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 21:17:49,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:17:49,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:17:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:17:50,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910615225] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:50,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:17:50,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16, 7] total 25 [2023-11-23 21:17:50,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028766172] [2023-11-23 21:17:50,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:50,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:17:50,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:50,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:17:50,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2023-11-23 21:17:50,176 INFO L87 Difference]: Start difference. First operand 237 states and 266 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:17:50,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:50,401 INFO L93 Difference]: Finished difference Result 436 states and 513 transitions. [2023-11-23 21:17:50,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:17:50,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2023-11-23 21:17:50,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:50,405 INFO L225 Difference]: With dead ends: 436 [2023-11-23 21:17:50,405 INFO L226 Difference]: Without dead ends: 319 [2023-11-23 21:17:50,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2023-11-23 21:17:50,407 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 134 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:50,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 118 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:17:50,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-11-23 21:17:50,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 279. [2023-11-23 21:17:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 189 states have (on average 1.1534391534391535) internal successors, (218), 207 states have internal predecessors, (218), 41 states have call successors, (41), 40 states have call predecessors, (41), 48 states have return successors, (51), 41 states have call predecessors, (51), 41 states have call successors, (51) [2023-11-23 21:17:50,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 310 transitions. [2023-11-23 21:17:50,456 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 310 transitions. Word has length 53 [2023-11-23 21:17:50,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:50,456 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 310 transitions. [2023-11-23 21:17:50,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 21:17:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 310 transitions. [2023-11-23 21:17:50,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-23 21:17:50,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:17:50,458 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:50,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:50,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 21:17:50,687 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:17:50,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:17:50,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1189617960, now seen corresponding path program 1 times [2023-11-23 21:17:50,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:17:50,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165012472] [2023-11-23 21:17:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:50,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:17:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:50,836 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-23 21:17:50,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:17:50,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165012472] [2023-11-23 21:17:50,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165012472] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:17:50,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972061414] [2023-11-23 21:17:50,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:17:50,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:17:50,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:17:50,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:17:50,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:17:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:17:50,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:17:50,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 21:17:51,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:17:51,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972061414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:17:51,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:17:51,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-23 21:17:51,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533076225] [2023-11-23 21:17:51,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:17:51,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:17:51,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:17:51,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:17:51,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:17:51,027 INFO L87 Difference]: Start difference. First operand 279 states and 310 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:17:51,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:17:51,184 INFO L93 Difference]: Finished difference Result 529 states and 600 transitions. [2023-11-23 21:17:51,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:17:51,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 84 [2023-11-23 21:17:51,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:17:51,186 INFO L225 Difference]: With dead ends: 529 [2023-11-23 21:17:51,186 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:17:51,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:17:51,204 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 39 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:17:51,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 152 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:17:51,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:17:51,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:17:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:17:51,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:17:51,205 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 84 [2023-11-23 21:17:51,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:17:51,206 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:17:51,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:17:51,206 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:17:51,206 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:17:51,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:17:51,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:17:51,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 21:17:51,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:17:58,045 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 806 812) no Hoare annotation was computed. [2023-11-23 21:17:58,045 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 806 812) the Hoare annotation is: true [2023-11-23 21:17:58,046 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 486 497) the Hoare annotation is: true [2023-11-23 21:17:58,046 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 486 497) no Hoare annotation was computed. [2023-11-23 21:17:58,046 INFO L899 garLoopResultBuilder]: For program point L704(line 704) no Hoare annotation was computed. [2023-11-23 21:17:58,046 INFO L895 garLoopResultBuilder]: At program point L854(line 854) the Hoare annotation is: (let ((.cse0 (<= 3 |old(~waterLevel~0)|)) (.cse1 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1) (or .cse0 (and (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (<= 1 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) (= |old(~waterLevel~0)| ~waterLevel~0))) (= ~pumpRunning~0 1)) (not (= |old(~pumpRunning~0)| 1)) .cse1))) [2023-11-23 21:17:58,046 INFO L899 garLoopResultBuilder]: For program point L429(lines 429 449) no Hoare annotation was computed. [2023-11-23 21:17:58,046 INFO L895 garLoopResultBuilder]: At program point L859(line 859) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (and (= ~pumpRunning~0 0) (= |old(~waterLevel~0)| ~waterLevel~0))) (.cse0 (= 0 ~systemActive~0))) (and (or (<= 3 |old(~waterLevel~0)|) (not (= |old(~pumpRunning~0)| 1)) .cse0) (or .cse1 .cse2 (<= 2 |old(~waterLevel~0)|) .cse0) (or .cse1 .cse2 (not (= |old(~waterLevel~0)| 2)) .cse0))) [2023-11-23 21:17:58,046 INFO L899 garLoopResultBuilder]: For program point L859-1(lines 840 864) no Hoare annotation was computed. [2023-11-23 21:17:58,046 INFO L899 garLoopResultBuilder]: For program point L793-1(lines 793 799) no Hoare annotation was computed. [2023-11-23 21:17:58,047 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 782 805) the Hoare annotation is: (let ((.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse3 (= 0 ~systemActive~0))) (and (or (< 1 |old(~waterLevel~0)|) .cse0 (and .cse1 .cse2) .cse3) (or (<= 3 |old(~waterLevel~0)|) (not (= |old(~pumpRunning~0)| 1)) .cse3 (and .cse2 (= ~pumpRunning~0 1))) (or .cse0 (and .cse1 (= 2 ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2)) .cse3))) [2023-11-23 21:17:58,047 INFO L899 garLoopResultBuilder]: For program point L439(lines 439 445) no Hoare annotation was computed. [2023-11-23 21:17:58,047 INFO L899 garLoopResultBuilder]: For program point L435(lines 435 448) no Hoare annotation was computed. [2023-11-23 21:17:58,047 INFO L899 garLoopResultBuilder]: For program point L435-1(lines 420 452) no Hoare annotation was computed. [2023-11-23 21:17:58,047 INFO L899 garLoopResultBuilder]: For program point L786-1(lines 785 804) no Hoare annotation was computed. [2023-11-23 21:17:58,047 INFO L899 garLoopResultBuilder]: For program point L848(lines 848 856) no Hoare annotation was computed. [2023-11-23 21:17:58,047 INFO L899 garLoopResultBuilder]: For program point L844(lines 844 861) no Hoare annotation was computed. [2023-11-23 21:17:58,047 INFO L895 garLoopResultBuilder]: At program point L427(line 427) the Hoare annotation is: (let ((.cse4 (= ~pumpRunning~0 0)) (.cse1 (<= ~waterLevel~0 1)) (.cse7 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse5 (and .cse4 .cse1 .cse7)) (.cse6 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (<= 3 |old(~waterLevel~0)|)) (.cse3 (= 0 ~systemActive~0)) (.cse2 (= ~pumpRunning~0 1))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 1)) (and .cse1 .cse2) .cse3 (and .cse4 .cse1)) (or (not (= ~waterLevel~0 1)) .cse5 .cse6 .cse0 .cse3) (or .cse5 .cse6 .cse0 .cse3 (and .cse7 .cse2))))) [2023-11-23 21:17:58,047 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 782 805) no Hoare annotation was computed. [2023-11-23 21:17:58,048 INFO L899 garLoopResultBuilder]: For program point L427-1(line 427) no Hoare annotation was computed. [2023-11-23 21:17:58,048 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 704) no Hoare annotation was computed. [2023-11-23 21:17:58,048 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 565 594) no Hoare annotation was computed. [2023-11-23 21:17:58,048 INFO L902 garLoopResultBuilder]: At program point L575-2(lines 575 589) the Hoare annotation is: true [2023-11-23 21:17:58,048 INFO L902 garLoopResultBuilder]: At program point L571(line 571) the Hoare annotation is: true [2023-11-23 21:17:58,048 INFO L899 garLoopResultBuilder]: For program point L571-1(line 571) no Hoare annotation was computed. [2023-11-23 21:17:58,048 INFO L899 garLoopResultBuilder]: For program point L590(lines 565 594) no Hoare annotation was computed. [2023-11-23 21:17:58,048 INFO L899 garLoopResultBuilder]: For program point L586(line 586) no Hoare annotation was computed. [2023-11-23 21:17:58,048 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 565 594) the Hoare annotation is: true [2023-11-23 21:17:58,048 INFO L899 garLoopResultBuilder]: For program point L579(lines 579 583) no Hoare annotation was computed. [2023-11-23 21:17:58,049 INFO L902 garLoopResultBuilder]: At program point L579-1(lines 579 583) the Hoare annotation is: true [2023-11-23 21:17:58,049 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 498 506) the Hoare annotation is: true [2023-11-23 21:17:58,049 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 498 506) no Hoare annotation was computed. [2023-11-23 21:17:58,049 INFO L895 garLoopResultBuilder]: At program point L758-2(lines 750 763) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_main_~tmp~4#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (<= ~waterLevel~0 2))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~pumpRunning~0 1)) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 .cse3))) [2023-11-23 21:17:58,049 INFO L899 garLoopResultBuilder]: For program point L721(lines 720 767) no Hoare annotation was computed. [2023-11-23 21:17:58,049 INFO L899 garLoopResultBuilder]: For program point L651(lines 651 658) no Hoare annotation was computed. [2023-11-23 21:17:58,049 INFO L899 garLoopResultBuilder]: For program point L651-2(lines 651 658) no Hoare annotation was computed. [2023-11-23 21:17:58,049 INFO L895 garLoopResultBuilder]: At program point L742(line 742) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_main_~tmp~4#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (<= ~waterLevel~0 1) .cse1 .cse2 .cse3) (and .cse1 .cse2 .cse3 (<= ~waterLevel~0 2) (= ~pumpRunning~0 1)) (and .cse0 (= 2 ~waterLevel~0) .cse1 .cse2 .cse3))) [2023-11-23 21:17:58,049 INFO L899 garLoopResultBuilder]: For program point L771(lines 710 775) no Hoare annotation was computed. [2023-11-23 21:17:58,050 INFO L899 garLoopResultBuilder]: For program point L730(lines 730 736) no Hoare annotation was computed. [2023-11-23 21:17:58,050 INFO L899 garLoopResultBuilder]: For program point L730-1(lines 730 736) no Hoare annotation was computed. [2023-11-23 21:17:58,050 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:17:58,050 INFO L895 garLoopResultBuilder]: At program point L768(lines 719 769) the Hoare annotation is: false [2023-11-23 21:17:58,050 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:17:58,050 INFO L899 garLoopResultBuilder]: For program point L740(lines 740 746) no Hoare annotation was computed. [2023-11-23 21:17:58,050 INFO L899 garLoopResultBuilder]: For program point L740-1(lines 740 746) no Hoare annotation was computed. [2023-11-23 21:17:58,050 INFO L895 garLoopResultBuilder]: At program point L765(lines 720 767) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_main_~tmp~4#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1) .cse0 .cse1 .cse2) (and .cse0 .cse1 .cse2 (<= ~waterLevel~0 2) (= ~pumpRunning~0 1)))) [2023-11-23 21:17:58,050 INFO L895 garLoopResultBuilder]: At program point L732(line 732) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_main_~tmp~4#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (<= ~waterLevel~0 2))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~pumpRunning~0 1)) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 .cse3))) [2023-11-23 21:17:58,051 INFO L895 garLoopResultBuilder]: At program point L828(line 828) the Hoare annotation is: (let ((.cse2 (not (= |old(~pumpRunning~0)| 0)))) (let ((.cse1 (= 0 ~systemActive~0)) (.cse3 (not (= ~waterLevel~0 1))) (.cse0 (and .cse2 (<= 1 ~waterLevel~0)))) (and (or (< 2 ~waterLevel~0) (< ~waterLevel~0 2) .cse0 .cse1) (or (< 1 ~waterLevel~0) (not (= |old(~pumpRunning~0)| 1)) .cse1) (or .cse2 (<= 2 ~waterLevel~0) .cse1 (let ((.cse4 (= |processEnvironment__wrappee__highWaterSensor_~tmp~6#1| 0))) (and (or .cse3 .cse4) (= ~pumpRunning~0 0) (or .cse4 (< 0 |processEnvironment__wrappee__highWaterSensor_~tmp~6#1|))))) (let ((.cse5 (select |#memory_int| 1))) (or .cse3 (not (= (select |#length| 12) 25)) (not (= (select .cse5 0) 48)) (not (= 9 (select |#length| 11))) (not (= 9 (select |#length| 5))) (not (= 30 (select |#length| 7))) (not (= 31 (select |#length| 2))) (not (= (select |#valid| 12) 1)) (not (= 2 (select |#length| 1))) (not (= 9 (select |#length| 14))) (not (= 1 ~systemActive~0)) (not (= (select |#length| 15) 25)) (not (= (select |#valid| 6) 1)) (not (= (select |#valid| 3) 1)) (not (= ~head~0.offset 0)) (and (= |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_#res#1| 0) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1| 1)) (not (= (select |#valid| 11) 1)) (not (= (select |#length| 9) 21)) (not (= 30 (select |#length| 10))) (not (= (select |#valid| 15) 1)) (not (= (select |#length| 6) 21)) (not (= 1 (select |#valid| 5))) (not (= (select |#length| 8) 9)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= ~methaneLevelCritical~0 0)) (not (= (select .cse5 1) 0)) (not (= (select |#valid| 1) 1)) (not (= (select |#valid| 8) 1)) (not (= 30 (select |#length| 13))) (not (= (select |#valid| 4) 1)) (not (= (select |#valid| 7) 1)) (not (= (select |#valid| 10) 1)) (not (= (select |#valid| 14) 1)) (not (= (select |#valid| 13) 1)) .cse0 (< |#StackHeapBarrier| 1) (not (= 30 (select |#length| 4))) (not (= (select |#valid| 2) 1)) (not (= (select |#valid| 9) 1)) (not (= ~head~0.base 0)) (not (= ~cleanupTimeShifts~0 4))))))) [2023-11-23 21:17:58,051 INFO L899 garLoopResultBuilder]: For program point L822(lines 822 830) no Hoare annotation was computed. [2023-11-23 21:17:58,051 INFO L899 garLoopResultBuilder]: For program point L818(lines 818 835) no Hoare annotation was computed. [2023-11-23 21:17:58,051 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 814 838) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (<= 2 ~waterLevel~0) (not (= |old(~pumpRunning~0)| 1)) .cse0 (= ~pumpRunning~0 1)) (or (< 2 ~waterLevel~0) (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0))) [2023-11-23 21:17:58,051 INFO L895 garLoopResultBuilder]: At program point L833(line 833) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (< 2 ~waterLevel~0) (not (= |old(~pumpRunning~0)| 0)) .cse0) (or (<= 2 ~waterLevel~0) (not (= |old(~pumpRunning~0)| 1)) .cse0 (= ~pumpRunning~0 1)))) [2023-11-23 21:17:58,052 INFO L899 garLoopResultBuilder]: For program point L833-1(lines 814 838) no Hoare annotation was computed. [2023-11-23 21:17:58,052 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 814 838) no Hoare annotation was computed. [2023-11-23 21:17:58,052 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 474 485) no Hoare annotation was computed. [2023-11-23 21:17:58,052 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 474 485) the Hoare annotation is: (let ((.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (= 0 ~systemActive~0))) (and (or (<= 3 |old(~waterLevel~0)|) (not (= ~pumpRunning~0 1)) .cse0 .cse1) (or (not (= ~pumpRunning~0 0)) .cse0 .cse1 (< 2 |old(~waterLevel~0)|)))) [2023-11-23 21:17:58,054 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:17:58,057 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:17:58,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:17:58 BoogieIcfgContainer [2023-11-23 21:17:58,071 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:17:58,072 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:17:58,072 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:17:58,072 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:17:58,073 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:17:27" (3/4) ... [2023-11-23 21:17:58,075 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:17:58,078 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-11-23 21:17:58,079 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-11-23 21:17:58,079 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-11-23 21:17:58,079 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-11-23 21:17:58,079 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2023-11-23 21:17:58,079 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-11-23 21:17:58,080 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-11-23 21:17:58,088 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2023-11-23 21:17:58,089 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-23 21:17:58,090 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 21:17:58,090 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:17:58,091 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:17:58,121 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((1 < \old(waterLevel)) || !((\old(pumpRunning) == 0))) || ((pumpRunning == 0) && (\old(waterLevel) == waterLevel))) || (0 == systemActive)) && ((((3 <= \old(waterLevel)) || !((\old(pumpRunning) == 1))) || (0 == systemActive)) || ((\old(waterLevel) == waterLevel) && (pumpRunning == 1)))) && (((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (2 == waterLevel))) || !((\old(waterLevel) == 2))) || (0 == systemActive))) [2023-11-23 21:17:58,173 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((1 < \old(waterLevel)) || !((\old(pumpRunning) == 0))) || ((pumpRunning == 0) && (\old(waterLevel) == waterLevel))) || (0 == systemActive)) && ((((3 <= \old(waterLevel)) || !((\old(pumpRunning) == 1))) || (0 == systemActive)) || ((\old(waterLevel) == waterLevel) && (pumpRunning == 1)))) && (((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (2 == waterLevel))) || !((\old(waterLevel) == 2))) || (0 == systemActive))) [2023-11-23 21:17:58,228 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:17:58,228 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:17:58,229 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:17:58,229 INFO L158 Benchmark]: Toolchain (without parser) took 32185.67ms. Allocated memory was 121.6MB in the beginning and 503.3MB in the end (delta: 381.7MB). Free memory was 80.2MB in the beginning and 362.3MB in the end (delta: -282.1MB). Peak memory consumption was 100.9MB. Max. memory is 16.1GB. [2023-11-23 21:17:58,230 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 121.6MB. Free memory was 67.6MB in the beginning and 67.4MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:17:58,231 INFO L158 Benchmark]: CACSL2BoogieTranslator took 785.36ms. Allocated memory is still 121.6MB. Free memory was 79.8MB in the beginning and 60.5MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 21:17:58,231 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.87ms. Allocated memory is still 121.6MB. Free memory was 60.5MB in the beginning and 58.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:17:58,232 INFO L158 Benchmark]: Boogie Preprocessor took 81.89ms. Allocated memory is still 121.6MB. Free memory was 58.0MB in the beginning and 56.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:17:58,233 INFO L158 Benchmark]: RCFGBuilder took 831.96ms. Allocated memory was 121.6MB in the beginning and 172.0MB in the end (delta: 50.3MB). Free memory was 56.3MB in the beginning and 124.0MB in the end (delta: -67.6MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2023-11-23 21:17:58,234 INFO L158 Benchmark]: TraceAbstraction took 30244.46ms. Allocated memory was 172.0MB in the beginning and 503.3MB in the end (delta: 331.4MB). Free memory was 124.0MB in the beginning and 370.7MB in the end (delta: -246.7MB). Peak memory consumption was 290.2MB. Max. memory is 16.1GB. [2023-11-23 21:17:58,237 INFO L158 Benchmark]: Witness Printer took 156.82ms. Allocated memory is still 503.3MB. Free memory was 369.6MB in the beginning and 362.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 21:17:58,239 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 121.6MB. Free memory was 67.6MB in the beginning and 67.4MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 785.36ms. Allocated memory is still 121.6MB. Free memory was 79.8MB in the beginning and 60.5MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.87ms. Allocated memory is still 121.6MB. Free memory was 60.5MB in the beginning and 58.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.89ms. Allocated memory is still 121.6MB. Free memory was 58.0MB in the beginning and 56.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 831.96ms. Allocated memory was 121.6MB in the beginning and 172.0MB in the end (delta: 50.3MB). Free memory was 56.3MB in the beginning and 124.0MB in the end (delta: -67.6MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * TraceAbstraction took 30244.46ms. Allocated memory was 172.0MB in the beginning and 503.3MB in the end (delta: 331.4MB). Free memory was 124.0MB in the beginning and 370.7MB in the end (delta: -246.7MB). Peak memory consumption was 290.2MB. Max. memory is 16.1GB. * Witness Printer took 156.82ms. Allocated memory is still 503.3MB. Free memory was 369.6MB in the beginning and 362.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. 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,"libacc.i","") [49] - GenericResultAtLocation [Line: 415]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [415] - GenericResultAtLocation [Line: 453]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [453] - GenericResultAtLocation [Line: 562]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [562] - GenericResultAtLocation [Line: 664]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [664] - GenericResultAtLocation [Line: 699]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [699] - GenericResultAtLocation [Line: 708]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [708] - GenericResultAtLocation [Line: 776]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [776] * 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 - PositiveResult [Line: 704]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.1s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 744 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 724 mSDsluCounter, 1661 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1108 mSDsCounter, 202 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2194 IncrementalHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 202 mSolverCounterUnsat, 553 mSDtfsCounter, 2194 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 526 GetRequests, 375 SyntacticMatches, 5 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=281occurred in iteration=9, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 265 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 445 PreInvPairs, 492 NumberOfFragments, 773 HoareAnnotationTreeSize, 445 FomulaSimplifications, 14872 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 20 FomulaSimplificationsInter, 23454 FormulaSimplificationTreeSizeReductionInter, 5.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 682 NumberOfCodeBlocks, 682 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 768 ConstructedInterpolants, 0 QuantifiedInterpolants, 2412 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1051 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 220/272 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: OVERALL_TIME: 5.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 40, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 49, TOOLS_POST_TIME: 2.5s, TOOLS_POST_CALL_APPLICATIONS: 20, TOOLS_POST_CALL_TIME: 1.2s, TOOLS_POST_RETURN_APPLICATIONS: 16, TOOLS_POST_RETURN_TIME: 1.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 85, TOOLS_QUANTIFIERELIM_TIME: 4.8s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.8s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 115, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 16, DOMAIN_JOIN_TIME: 0.7s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 40, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 4.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 4.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 16, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME: 0.2s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 440, DAG_COMPRESSION_RETAINED_NODES: 109, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 720]: Loop Invariant Derived loop invariant: ((((((pumpRunning == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (tmp == 1)) && (splverifierCounter == 0)) || (((((1 == systemActive) && (tmp == 1)) && (splverifierCounter == 0)) && (waterLevel <= 2)) && (pumpRunning == 1))) - InvariantResult [Line: 719]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 575]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 782]: Loop Invariant Derived loop invariant: ((((((1 < \old(waterLevel)) || !((\old(pumpRunning) == 0))) || ((pumpRunning == 0) && (\old(waterLevel) == waterLevel))) || (0 == systemActive)) && ((((3 <= \old(waterLevel)) || !((\old(pumpRunning) == 1))) || (0 == systemActive)) || ((\old(waterLevel) == waterLevel) && (pumpRunning == 1)))) && (((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (2 == waterLevel))) || !((\old(waterLevel) == 2))) || (0 == systemActive))) RESULT: Ultimate proved your program to be correct! [2023-11-23 21:17:58,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0971261-4b66-43d7-bde2-fbea35f24a99/bin/utaipan-verify-mE87zJ7Ire/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 Result: TRUE