./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/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_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/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_deb754d2-7113-4f84-ac8d-bc17b066c5fc/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 aba011a2dee79947f4cca7910fc4583b21e1f3cb9acd1affa050aa7677352666 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:27:11,050 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:27:11,183 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:27:11,197 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:27:11,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:27:11,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:27:11,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:27:11,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:27:11,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:27:11,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:27:11,227 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:27:11,227 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:27:11,228 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:27:11,228 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:27:11,229 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:27:11,229 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:27:11,230 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:27:11,231 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:27:11,231 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:27:11,232 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:27:11,232 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:27:11,233 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:27:11,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:27:11,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:27:11,235 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:27:11,236 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:27:11,236 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:27:11,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:27:11,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:27:11,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:27:11,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:27:11,239 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:27:11,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:27:11,240 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:27:11,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:27:11,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:27:11,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:27:11,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:27:11,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:27:11,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:27:11,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:27:11,244 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:27:11,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:27:11,245 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:27:11,245 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:27:11,245 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:27:11,246 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:27:11,246 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_deb754d2-7113-4f84-ac8d-bc17b066c5fc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aba011a2dee79947f4cca7910fc4583b21e1f3cb9acd1affa050aa7677352666 [2023-11-23 21:27:11,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:27:11,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:27:11,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:27:11,618 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:27:11,619 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:27:11,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c [2023-11-23 21:27:14,728 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:27:15,073 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:27:15,074 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c [2023-11-23 21:27:15,097 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/data/f4cf1e0ac/b10fdf6c70a8490d9e7b954e2bce767f/FLAGefa94f797 [2023-11-23 21:27:15,114 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/data/f4cf1e0ac/b10fdf6c70a8490d9e7b954e2bce767f [2023-11-23 21:27:15,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:27:15,123 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:27:15,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:27:15,126 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:27:15,132 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:27:15,132 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:15" (1/1) ... [2023-11-23 21:27:15,133 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff8bc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:15, skipping insertion in model container [2023-11-23 21:27:15,133 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:15" (1/1) ... [2023-11-23 21:27:15,200 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:27:15,382 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_deb754d2-7113-4f84-ac8d-bc17b066c5fc/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c[1605,1618] [2023-11-23 21:27:15,518 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:27:15,530 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:27:15,541 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2023-11-23 21:27:15,543 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [58] [2023-11-23 21:27:15,543 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [96] [2023-11-23 21:27:15,543 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [199] [2023-11-23 21:27:15,544 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [308] [2023-11-23 21:27:15,544 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [674] [2023-11-23 21:27:15,544 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [724] [2023-11-23 21:27:15,545 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [789] [2023-11-23 21:27:15,548 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_deb754d2-7113-4f84-ac8d-bc17b066c5fc/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c[1605,1618] [2023-11-23 21:27:15,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:27:15,630 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:27:15,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:15 WrapperNode [2023-11-23 21:27:15,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:27:15,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:27:15,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:27:15,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:27:15,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:15" (1/1) ... [2023-11-23 21:27:15,654 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:15" (1/1) ... [2023-11-23 21:27:15,697 INFO L138 Inliner]: procedures = 58, calls = 103, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 232 [2023-11-23 21:27:15,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:27:15,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:27:15,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:27:15,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:27:15,710 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:15" (1/1) ... [2023-11-23 21:27:15,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:15" (1/1) ... [2023-11-23 21:27:15,713 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:15" (1/1) ... [2023-11-23 21:27:15,713 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:15" (1/1) ... [2023-11-23 21:27:15,721 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:15" (1/1) ... [2023-11-23 21:27:15,727 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:15" (1/1) ... [2023-11-23 21:27:15,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:15" (1/1) ... [2023-11-23 21:27:15,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:15" (1/1) ... [2023-11-23 21:27:15,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:27:15,735 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:27:15,735 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:27:15,735 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:27:15,736 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:15" (1/1) ... [2023-11-23 21:27:15,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:27:15,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:27:15,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:27:15,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:27:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:27:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-23 21:27:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-23 21:27:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-23 21:27:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-23 21:27:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-23 21:27:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-23 21:27:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-11-23 21:27:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-11-23 21:27:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-23 21:27:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-23 21:27:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-11-23 21:27:15,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-11-23 21:27:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:27:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-23 21:27:15,830 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-23 21:27:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:27:15,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:27:15,922 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:27:15,924 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:27:16,200 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:27:16,377 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:27:16,378 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:27:16,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:16 BoogieIcfgContainer [2023-11-23 21:27:16,380 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:27:16,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:27:16,382 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:27:16,385 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:27:16,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:27:15" (1/3) ... [2023-11-23 21:27:16,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5313036c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:16, skipping insertion in model container [2023-11-23 21:27:16,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:27:15" (2/3) ... [2023-11-23 21:27:16,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5313036c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:27:16, skipping insertion in model container [2023-11-23 21:27:16,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:16" (3/3) ... [2023-11-23 21:27:16,388 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product57.cil.c [2023-11-23 21:27:16,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:27:16,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:27:16,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:27:16,463 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;@1c284604, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:27:16,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:27:16,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 21:27:16,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:27:16,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:16,480 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:16,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:16,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:16,488 INFO L85 PathProgramCache]: Analyzing trace with hash -629320208, now seen corresponding path program 1 times [2023-11-23 21:27:16,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:16,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530479501] [2023-11-23 21:27:16,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:16,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:27:16,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:16,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530479501] [2023-11-23 21:27:16,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530479501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:16,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:16,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:27:16,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426910970] [2023-11-23 21:27:16,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:16,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:27:16,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:16,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:27:16,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:27:16,828 INFO L87 Difference]: Start difference. First operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:27:16,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:16,941 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2023-11-23 21:27:16,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:27:16,944 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-11-23 21:27:16,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:16,954 INFO L225 Difference]: With dead ends: 114 [2023-11-23 21:27:16,954 INFO L226 Difference]: Without dead ends: 53 [2023-11-23 21:27:16,959 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 21:27:16,968 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:16,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:27:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-23 21:27:17,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-11-23 21:27:17,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 41 states have internal predecessors, (45), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:27:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2023-11-23 21:27:17,027 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 21 [2023-11-23 21:27:17,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:17,027 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2023-11-23 21:27:17,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:27:17,028 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2023-11-23 21:27:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 21:27:17,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:17,031 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:17,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:27:17,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:17,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1703269633, now seen corresponding path program 1 times [2023-11-23 21:27:17,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:17,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331619261] [2023-11-23 21:27:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:27:17,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:17,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331619261] [2023-11-23 21:27:17,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331619261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:17,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:17,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:17,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91108031] [2023-11-23 21:27:17,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:17,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:17,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:17,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:17,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:17,143 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:27:17,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:17,195 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2023-11-23 21:27:17,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:17,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-11-23 21:27:17,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:17,198 INFO L225 Difference]: With dead ends: 83 [2023-11-23 21:27:17,198 INFO L226 Difference]: Without dead ends: 45 [2023-11-23 21:27:17,199 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 21:27:17,200 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:17,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:27:17,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-23 21:27:17,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-23 21:27:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 36 states have internal predecessors, (39), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:27:17,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2023-11-23 21:27:17,211 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 22 [2023-11-23 21:27:17,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:17,212 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2023-11-23 21:27:17,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:27:17,212 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2023-11-23 21:27:17,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 21:27:17,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:17,214 INFO L195 NwaCegarLoop]: trace histogram [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 21:27:17,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:27:17,215 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:17,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:17,216 INFO L85 PathProgramCache]: Analyzing trace with hash 332325953, now seen corresponding path program 1 times [2023-11-23 21:27:17,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:17,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535119422] [2023-11-23 21:27:17,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:17,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:27:17,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:17,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535119422] [2023-11-23 21:27:17,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535119422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:17,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:17,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:17,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856515690] [2023-11-23 21:27:17,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:17,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:17,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:17,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:17,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:17,442 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:27:17,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:17,480 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2023-11-23 21:27:17,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:17,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-11-23 21:27:17,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:17,483 INFO L225 Difference]: With dead ends: 88 [2023-11-23 21:27:17,485 INFO L226 Difference]: Without dead ends: 45 [2023-11-23 21:27:17,486 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 21:27:17,489 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:17,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 41 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:27:17,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-23 21:27:17,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-23 21:27:17,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 36 states have internal predecessors, (38), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:27:17,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2023-11-23 21:27:17,506 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 24 [2023-11-23 21:27:17,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:17,508 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2023-11-23 21:27:17,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:27:17,508 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2023-11-23 21:27:17,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:27:17,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:17,509 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:17,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:27:17,510 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:17,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:17,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1545401801, now seen corresponding path program 1 times [2023-11-23 21:27:17,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:17,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068412067] [2023-11-23 21:27:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:17,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:27:17,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:17,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068412067] [2023-11-23 21:27:17,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068412067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:17,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:17,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:27:17,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716753531] [2023-11-23 21:27:17,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:17,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:27:17,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:17,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:27:17,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:27:17,627 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:27:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:17,687 INFO L93 Difference]: Finished difference Result 125 states and 159 transitions. [2023-11-23 21:27:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:27:17,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2023-11-23 21:27:17,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:17,690 INFO L225 Difference]: With dead ends: 125 [2023-11-23 21:27:17,690 INFO L226 Difference]: Without dead ends: 82 [2023-11-23 21:27:17,691 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 21:27:17,693 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 36 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:17,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 92 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:27:17,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-23 21:27:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2023-11-23 21:27:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 60 states have internal predecessors, (67), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2023-11-23 21:27:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2023-11-23 21:27:17,712 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 27 [2023-11-23 21:27:17,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:17,713 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2023-11-23 21:27:17,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:27:17,713 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2023-11-23 21:27:17,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-23 21:27:17,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:17,715 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:17,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:27:17,715 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:17,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:17,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1433384321, now seen corresponding path program 1 times [2023-11-23 21:27:17,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:17,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140907090] [2023-11-23 21:27:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:17,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:27:18,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:18,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140907090] [2023-11-23 21:27:18,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140907090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:18,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:18,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:27:18,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229443784] [2023-11-23 21:27:18,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:18,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:27:18,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:18,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:27:18,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:27:18,149 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:27:18,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:18,373 INFO L93 Difference]: Finished difference Result 240 states and 298 transitions. [2023-11-23 21:27:18,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:27:18,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2023-11-23 21:27:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:18,383 INFO L225 Difference]: With dead ends: 240 [2023-11-23 21:27:18,383 INFO L226 Difference]: Without dead ends: 162 [2023-11-23 21:27:18,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:27:18,388 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 112 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:18,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 163 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:27:18,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-23 21:27:18,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2023-11-23 21:27:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 101 states have (on average 1.2475247524752475) internal successors, (126), 112 states have internal predecessors, (126), 28 states have call successors, (28), 24 states have call predecessors, (28), 24 states have return successors, (37), 26 states have call predecessors, (37), 28 states have call successors, (37) [2023-11-23 21:27:18,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 191 transitions. [2023-11-23 21:27:18,431 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 191 transitions. Word has length 32 [2023-11-23 21:27:18,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:18,431 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 191 transitions. [2023-11-23 21:27:18,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:27:18,432 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 191 transitions. [2023-11-23 21:27:18,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-23 21:27:18,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:18,434 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:18,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:27:18,434 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:18,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:18,435 INFO L85 PathProgramCache]: Analyzing trace with hash 35676312, now seen corresponding path program 1 times [2023-11-23 21:27:18,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:18,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153163091] [2023-11-23 21:27:18,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:18,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:27:18,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:18,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153163091] [2023-11-23 21:27:18,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153163091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:18,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:18,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:27:18,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559259795] [2023-11-23 21:27:18,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:18,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:27:18,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:18,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:27:18,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:27:18,924 INFO L87 Difference]: Start difference. First operand 154 states and 191 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:27:19,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:19,301 INFO L93 Difference]: Finished difference Result 370 states and 467 transitions. [2023-11-23 21:27:19,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 21:27:19,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2023-11-23 21:27:19,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:19,305 INFO L225 Difference]: With dead ends: 370 [2023-11-23 21:27:19,305 INFO L226 Difference]: Without dead ends: 267 [2023-11-23 21:27:19,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:27:19,311 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 201 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:19,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 194 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:27:19,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-11-23 21:27:19,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 231. [2023-11-23 21:27:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 156 states have (on average 1.2564102564102564) internal successors, (196), 172 states have internal predecessors, (196), 39 states have call successors, (39), 30 states have call predecessors, (39), 35 states have return successors, (54), 41 states have call predecessors, (54), 39 states have call successors, (54) [2023-11-23 21:27:19,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 289 transitions. [2023-11-23 21:27:19,391 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 289 transitions. Word has length 35 [2023-11-23 21:27:19,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:19,391 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 289 transitions. [2023-11-23 21:27:19,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:27:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 289 transitions. [2023-11-23 21:27:19,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-23 21:27:19,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:19,399 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:19,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:27:19,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:19,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:19,400 INFO L85 PathProgramCache]: Analyzing trace with hash -100258362, now seen corresponding path program 1 times [2023-11-23 21:27:19,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:19,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260795460] [2023-11-23 21:27:19,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:19,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:27:19,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:19,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260795460] [2023-11-23 21:27:19,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260795460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:19,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:27:19,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:27:19,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533955488] [2023-11-23 21:27:19,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:19,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:27:19,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:19,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:27:19,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:27:19,542 INFO L87 Difference]: Start difference. First operand 231 states and 289 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 21:27:19,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:19,840 INFO L93 Difference]: Finished difference Result 484 states and 608 transitions. [2023-11-23 21:27:19,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:27:19,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2023-11-23 21:27:19,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:19,851 INFO L225 Difference]: With dead ends: 484 [2023-11-23 21:27:19,852 INFO L226 Difference]: Without dead ends: 255 [2023-11-23 21:27:19,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:27:19,857 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 56 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:19,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 200 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:27:19,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-23 21:27:19,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 236. [2023-11-23 21:27:19,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 159 states have (on average 1.220125786163522) internal successors, (194), 175 states have internal predecessors, (194), 40 states have call successors, (40), 30 states have call predecessors, (40), 36 states have return successors, (57), 42 states have call predecessors, (57), 40 states have call successors, (57) [2023-11-23 21:27:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 291 transitions. [2023-11-23 21:27:19,902 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 291 transitions. Word has length 35 [2023-11-23 21:27:19,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:19,902 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 291 transitions. [2023-11-23 21:27:19,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 21:27:19,903 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 291 transitions. [2023-11-23 21:27:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 21:27:19,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:19,909 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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] [2023-11-23 21:27:19,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:27:19,910 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:19,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:19,910 INFO L85 PathProgramCache]: Analyzing trace with hash -735451819, now seen corresponding path program 1 times [2023-11-23 21:27:19,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:19,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292462743] [2023-11-23 21:27:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:19,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:27:20,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:20,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292462743] [2023-11-23 21:27:20,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292462743] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:27:20,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626845920] [2023-11-23 21:27:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:20,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:27:20,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:27:20,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:27:20,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:27:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:20,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 21:27:20,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:27:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:27:20,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:27:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:27:20,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626845920] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:27:20,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [165297513] [2023-11-23 21:27:20,788 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-11-23 21:27:20,790 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:27:20,795 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:27:20,801 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:27:20,801 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:27:25,835 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 28 for LOIs [2023-11-23 21:27:25,844 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 27 for LOIs [2023-11-23 21:27:26,427 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 50 for LOIs [2023-11-23 21:27:26,478 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 27 for LOIs [2023-11-23 21:27:26,545 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:27:30,209 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3645#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| 2)) (= ~waterLevel~0 |timeShift_getWaterLevel_#res#1|) (= ~methaneLevelCritical~0 0) (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 1) (<= 2 ~waterLevel~0) (= |old(~pumpRunning~0)| 0) (exists ((|v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_11| Int) (|v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_7| Int)) (and (or (not (= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_11| 0)) (and (<= |v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_7| 2147483647) (<= 0 (+ |v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_7| 2147483648)))) (<= 0 (+ |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_11| 2147483648)) (<= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_11| 2147483647))) (= |old(~waterLevel~0)| ~waterLevel~0) (<= |timeShift_getWaterLevel_#res#1| 2147483647) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| |timeShift_getWaterLevel_#res#1|) (= ~switchedOnBeforeTS~0 0) (not (= 0 ~systemActive~0)) (= ~pumpRunning~0 1))' at error location [2023-11-23 21:27:30,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:27:30,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:27:30,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 14 [2023-11-23 21:27:30,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767480449] [2023-11-23 21:27:30,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:27:30,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 21:27:30,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:30,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 21:27:30,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1370, Unknown=0, NotChecked=0, Total=1560 [2023-11-23 21:27:30,213 INFO L87 Difference]: Start difference. First operand 236 states and 291 transitions. Second operand has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-23 21:27:31,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:31,587 INFO L93 Difference]: Finished difference Result 685 states and 880 transitions. [2023-11-23 21:27:31,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-23 21:27:31,588 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) Word has length 60 [2023-11-23 21:27:31,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:31,595 INFO L225 Difference]: With dead ends: 685 [2023-11-23 21:27:31,596 INFO L226 Difference]: Without dead ends: 451 [2023-11-23 21:27:31,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 162 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=549, Invalid=3483, Unknown=0, NotChecked=0, Total=4032 [2023-11-23 21:27:31,602 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 323 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:31,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 306 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:27:31,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-11-23 21:27:31,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 404. [2023-11-23 21:27:31,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 268 states have (on average 1.1828358208955223) internal successors, (317), 301 states have internal predecessors, (317), 66 states have call successors, (66), 53 states have call predecessors, (66), 69 states have return successors, (119), 68 states have call predecessors, (119), 66 states have call successors, (119) [2023-11-23 21:27:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 502 transitions. [2023-11-23 21:27:31,669 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 502 transitions. Word has length 60 [2023-11-23 21:27:31,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:31,670 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 502 transitions. [2023-11-23 21:27:31,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 7 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-23 21:27:31,670 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 502 transitions. [2023-11-23 21:27:31,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-23 21:27:31,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:31,672 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:31,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:27:31,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:27:31,887 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:31,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:31,888 INFO L85 PathProgramCache]: Analyzing trace with hash -915316551, now seen corresponding path program 1 times [2023-11-23 21:27:31,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:31,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560839455] [2023-11-23 21:27:31,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:31,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:27:32,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:32,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560839455] [2023-11-23 21:27:32,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560839455] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:27:32,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272120196] [2023-11-23 21:27:32,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:32,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:27:32,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:27:32,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:27:32,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:27:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:32,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:27:32,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:27:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:27:32,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:27:32,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272120196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:27:32,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:27:32,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-11-23 21:27:32,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547236780] [2023-11-23 21:27:32,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:27:32,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:27:32,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:32,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:27:32,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:27:32,491 INFO L87 Difference]: Start difference. First operand 404 states and 502 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 21:27:32,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:32,655 INFO L93 Difference]: Finished difference Result 700 states and 867 transitions. [2023-11-23 21:27:32,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:27:32,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2023-11-23 21:27:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:32,661 INFO L225 Difference]: With dead ends: 700 [2023-11-23 21:27:32,661 INFO L226 Difference]: Without dead ends: 405 [2023-11-23 21:27:32,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-11-23 21:27:32,665 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 29 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:32,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 248 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:27:32,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2023-11-23 21:27:32,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 371. [2023-11-23 21:27:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 246 states have (on average 1.1585365853658536) internal successors, (285), 276 states have internal predecessors, (285), 59 states have call successors, (59), 50 states have call predecessors, (59), 65 states have return successors, (100), 62 states have call predecessors, (100), 59 states have call successors, (100) [2023-11-23 21:27:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 444 transitions. [2023-11-23 21:27:32,709 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 444 transitions. Word has length 63 [2023-11-23 21:27:32,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:32,710 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 444 transitions. [2023-11-23 21:27:32,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 21:27:32,710 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 444 transitions. [2023-11-23 21:27:32,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 21:27:32,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:27:32,713 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2023-11-23 21:27:32,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 21:27:32,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:27:32,933 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:27:32,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:27:32,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1185502938, now seen corresponding path program 1 times [2023-11-23 21:27:32,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:27:32,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645149522] [2023-11-23 21:27:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:32,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:27:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:27:33,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:27:33,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645149522] [2023-11-23 21:27:33,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645149522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:27:33,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502920911] [2023-11-23 21:27:33,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:27:33,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:27:33,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:27:33,797 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:27:33,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:27:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:27:33,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 21:27:33,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:27:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 23 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:27:34,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:27:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 21:27:34,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502920911] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:27:34,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [295130359] [2023-11-23 21:27:34,841 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-11-23 21:27:34,841 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:27:34,842 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:27:34,843 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:27:34,843 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:27:37,978 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 15 for LOIs [2023-11-23 21:27:37,985 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 27 for LOIs [2023-11-23 21:27:38,375 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 34 for LOIs [2023-11-23 21:27:38,386 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 27 for LOIs [2023-11-23 21:27:38,473 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:27:42,103 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7327#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 0)) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| 2)) (= ~waterLevel~0 |timeShift_getWaterLevel_#res#1|) (<= ~pumpRunning~0 1) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1|) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ 2147483648 |timeShift_getWaterLevel_#res#1|)) (<= |timeShift_getWaterLevel_#res#1| 2147483647) (<= 0 ~pumpRunning~0) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| |timeShift_getWaterLevel_#res#1|) (= ~switchedOnBeforeTS~0 0))' at error location [2023-11-23 21:27:42,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:27:42,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:27:42,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 11] total 32 [2023-11-23 21:27:42,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203885157] [2023-11-23 21:27:42,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:27:42,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-23 21:27:42,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:27:42,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-23 21:27:42,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=2978, Unknown=0, NotChecked=0, Total=3306 [2023-11-23 21:27:42,110 INFO L87 Difference]: Start difference. First operand 371 states and 444 transitions. Second operand has 32 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 17 states have call successors, (29), 9 states have call predecessors, (29), 12 states have return successors, (27), 16 states have call predecessors, (27), 16 states have call successors, (27) [2023-11-23 21:27:43,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:27:43,579 INFO L93 Difference]: Finished difference Result 558 states and 662 transitions. [2023-11-23 21:27:43,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-23 21:27:43,585 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 17 states have call successors, (29), 9 states have call predecessors, (29), 12 states have return successors, (27), 16 states have call predecessors, (27), 16 states have call successors, (27) Word has length 85 [2023-11-23 21:27:43,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:27:43,587 INFO L225 Difference]: With dead ends: 558 [2023-11-23 21:27:43,587 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:27:43,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 213 SyntacticMatches, 11 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2312 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=723, Invalid=5129, Unknown=0, NotChecked=0, Total=5852 [2023-11-23 21:27:43,593 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 357 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:27:43,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 270 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:27:43,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:27:43,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:27:43,594 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 21:27:43,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:27:43,595 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2023-11-23 21:27:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:27:43,595 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:27:43,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.838709677419355) internal successors, (150), 31 states have internal predecessors, (150), 17 states have call successors, (29), 9 states have call predecessors, (29), 12 states have return successors, (27), 16 states have call predecessors, (27), 16 states have call successors, (27) [2023-11-23 21:27:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:27:43,596 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:27:43,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:27:43,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:27:43,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 21:27:43,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:27:44,811 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 822 828) no Hoare annotation was computed. [2023-11-23 21:27:44,811 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 822 828) the Hoare annotation is: true [2023-11-23 21:27:44,812 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 232 243) the Hoare annotation is: true [2023-11-23 21:27:44,812 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 232 243) no Hoare annotation was computed. [2023-11-23 21:27:44,812 INFO L895 garLoopResultBuilder]: At program point L870(line 870) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse0 (not (= |old(~waterLevel~0)| 2))))) [2023-11-23 21:27:44,812 INFO L895 garLoopResultBuilder]: At program point L705(line 705) the Hoare annotation is: (let ((.cse1 (not (= |old(~waterLevel~0)| 2))) (.cse4 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= ~waterLevel~0 1))) (and (or .cse0 .cse1 (and .cse2 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| ~waterLevel~0) .cse3)) (or .cse4 .cse0 .cse1) (or .cse4 (not (= |old(~waterLevel~0)| 1)) .cse0 (and .cse2 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| 1) .cse3)))) [2023-11-23 21:27:44,812 INFO L899 garLoopResultBuilder]: For program point L705-1(line 705) no Hoare annotation was computed. [2023-11-23 21:27:44,812 INFO L895 garLoopResultBuilder]: At program point L875(line 875) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= ~pumpRunning~0 0)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (not (= |old(~waterLevel~0)| 1)) .cse1 (and .cse2 (= ~waterLevel~0 1))) (or .cse1 (not (= |old(~waterLevel~0)| 2)) (and .cse2 (= 2 ~waterLevel~0) .cse0)))) [2023-11-23 21:27:44,812 INFO L899 garLoopResultBuilder]: For program point L875-1(lines 856 880) no Hoare annotation was computed. [2023-11-23 21:27:44,812 INFO L899 garLoopResultBuilder]: For program point L809-1(lines 809 815) no Hoare annotation was computed. [2023-11-23 21:27:44,813 INFO L899 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2023-11-23 21:27:44,813 INFO L895 garLoopResultBuilder]: At program point L690(line 690) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1))) (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 2 ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2))))) [2023-11-23 21:27:44,813 INFO L899 garLoopResultBuilder]: For program point L690-1(line 690) no Hoare annotation was computed. [2023-11-23 21:27:44,813 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 795 821) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1))) (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 2 ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2))))) [2023-11-23 21:27:44,813 INFO L899 garLoopResultBuilder]: For program point L707(lines 707 717) no Hoare annotation was computed. [2023-11-23 21:27:44,813 INFO L899 garLoopResultBuilder]: For program point L802-2(lines 798 820) no Hoare annotation was computed. [2023-11-23 21:27:44,813 INFO L899 garLoopResultBuilder]: For program point L864(lines 864 872) no Hoare annotation was computed. [2023-11-23 21:27:44,813 INFO L899 garLoopResultBuilder]: For program point L703(lines 703 720) no Hoare annotation was computed. [2023-11-23 21:27:44,813 INFO L899 garLoopResultBuilder]: For program point L703-1(lines 695 723) no Hoare annotation was computed. [2023-11-23 21:27:44,813 INFO L899 garLoopResultBuilder]: For program point L860(lines 860 877) no Hoare annotation was computed. [2023-11-23 21:27:44,813 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 795 821) no Hoare annotation was computed. [2023-11-23 21:27:44,814 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2023-11-23 21:27:44,814 INFO L899 garLoopResultBuilder]: For program point L708(lines 708 714) no Hoare annotation was computed. [2023-11-23 21:27:44,814 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 99 128) no Hoare annotation was computed. [2023-11-23 21:27:44,814 INFO L899 garLoopResultBuilder]: For program point L124(lines 99 128) no Hoare annotation was computed. [2023-11-23 21:27:44,814 INFO L899 garLoopResultBuilder]: For program point L120(line 120) no Hoare annotation was computed. [2023-11-23 21:27:44,814 INFO L899 garLoopResultBuilder]: For program point L113(lines 113 117) no Hoare annotation was computed. [2023-11-23 21:27:44,814 INFO L902 garLoopResultBuilder]: At program point L113-1(lines 113 117) the Hoare annotation is: true [2023-11-23 21:27:44,814 INFO L902 garLoopResultBuilder]: At program point L109-2(lines 109 123) the Hoare annotation is: true [2023-11-23 21:27:44,814 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 99 128) the Hoare annotation is: true [2023-11-23 21:27:44,814 INFO L902 garLoopResultBuilder]: At program point L105(line 105) the Hoare annotation is: true [2023-11-23 21:27:44,815 INFO L899 garLoopResultBuilder]: For program point L105-1(line 105) no Hoare annotation was computed. [2023-11-23 21:27:44,815 INFO L895 garLoopResultBuilder]: At program point L771-2(lines 765 776) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)))) [2023-11-23 21:27:44,815 INFO L899 garLoopResultBuilder]: For program point L755(lines 755 761) no Hoare annotation was computed. [2023-11-23 21:27:44,815 INFO L899 garLoopResultBuilder]: For program point L755-1(lines 755 761) no Hoare annotation was computed. [2023-11-23 21:27:44,815 INFO L899 garLoopResultBuilder]: For program point L784(lines 725 788) no Hoare annotation was computed. [2023-11-23 21:27:44,815 INFO L895 garLoopResultBuilder]: At program point L747(line 747) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)))) [2023-11-23 21:27:44,815 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:27:44,815 INFO L899 garLoopResultBuilder]: For program point L186(lines 186 193) no Hoare annotation was computed. [2023-11-23 21:27:44,815 INFO L899 garLoopResultBuilder]: For program point L186-2(lines 186 193) no Hoare annotation was computed. [2023-11-23 21:27:44,815 INFO L895 garLoopResultBuilder]: At program point L781(lines 734 782) the Hoare annotation is: false [2023-11-23 21:27:44,815 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:27:44,816 INFO L899 garLoopResultBuilder]: For program point L736(lines 735 780) no Hoare annotation was computed. [2023-11-23 21:27:44,816 INFO L895 garLoopResultBuilder]: At program point L757(line 757) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)))) [2023-11-23 21:27:44,816 INFO L895 garLoopResultBuilder]: At program point L778(lines 735 780) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)))) [2023-11-23 21:27:44,816 INFO L899 garLoopResultBuilder]: For program point L745(lines 745 751) no Hoare annotation was computed. [2023-11-23 21:27:44,816 INFO L899 garLoopResultBuilder]: For program point L745-1(lines 745 751) no Hoare annotation was computed. [2023-11-23 21:27:44,816 INFO L895 garLoopResultBuilder]: At program point L849(line 849) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1))) [2023-11-23 21:27:44,816 INFO L899 garLoopResultBuilder]: For program point L849-1(lines 830 854) no Hoare annotation was computed. [2023-11-23 21:27:44,816 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 830 854) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0))))) [2023-11-23 21:27:44,816 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 830 854) no Hoare annotation was computed. [2023-11-23 21:27:44,817 INFO L895 garLoopResultBuilder]: At program point L844(line 844) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (and .cse0 (= |processEnvironment__wrappee__highWaterSensor_~tmp~6#1| 0)) (not (= ~waterLevel~0 1)) .cse1 .cse2) (or .cse1 .cse0 .cse2 (not (= 2 ~waterLevel~0))))) [2023-11-23 21:27:44,817 INFO L899 garLoopResultBuilder]: For program point L838(lines 838 846) no Hoare annotation was computed. [2023-11-23 21:27:44,817 INFO L899 garLoopResultBuilder]: For program point L834(lines 834 851) no Hoare annotation was computed. [2023-11-23 21:27:44,817 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 220 231) no Hoare annotation was computed. [2023-11-23 21:27:44,817 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 220 231) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (= 2 ~waterLevel~0) .cse0 (not (= |old(~waterLevel~0)| 2))) (or (not (= ~pumpRunning~0 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (= ~waterLevel~0 1)))) [2023-11-23 21:27:44,817 INFO L899 garLoopResultBuilder]: For program point isPumpRunningEXIT(lines 926 934) no Hoare annotation was computed. [2023-11-23 21:27:44,817 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 926 934) the Hoare annotation is: true [2023-11-23 21:27:44,819 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:27:44,825 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:27:44,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:27:44 BoogieIcfgContainer [2023-11-23 21:27:44,842 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:27:44,842 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:27:44,842 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:27:44,843 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:27:44,843 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:27:16" (3/4) ... [2023-11-23 21:27:44,847 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:27:44,850 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-11-23 21:27:44,851 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-11-23 21:27:44,851 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-11-23 21:27:44,851 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-11-23 21:27:44,852 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-11-23 21:27:44,852 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-11-23 21:27:44,852 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2023-11-23 21:27:44,875 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 51 nodes and edges [2023-11-23 21:27:44,876 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-23 21:27:44,878 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 21:27:44,878 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:27:44,879 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:27:45,052 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:27:45,053 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:27:45,053 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:27:45,054 INFO L158 Benchmark]: Toolchain (without parser) took 29931.55ms. Allocated memory was 174.1MB in the beginning and 526.4MB in the end (delta: 352.3MB). Free memory was 138.6MB in the beginning and 189.6MB in the end (delta: -51.0MB). Peak memory consumption was 301.2MB. Max. memory is 16.1GB. [2023-11-23 21:27:45,055 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:27:45,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 504.65ms. Allocated memory is still 174.1MB. Free memory was 138.6MB in the beginning and 127.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:27:45,058 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.64ms. Allocated memory is still 174.1MB. Free memory was 127.5MB in the beginning and 125.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:27:45,059 INFO L158 Benchmark]: Boogie Preprocessor took 36.32ms. Allocated memory is still 174.1MB. Free memory was 125.4MB in the beginning and 124.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:27:45,059 INFO L158 Benchmark]: RCFGBuilder took 644.70ms. Allocated memory is still 174.1MB. Free memory was 123.3MB in the beginning and 94.0MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-23 21:27:45,060 INFO L158 Benchmark]: TraceAbstraction took 28459.65ms. Allocated memory was 174.1MB in the beginning and 526.4MB in the end (delta: 352.3MB). Free memory was 93.0MB in the beginning and 198.0MB in the end (delta: -105.0MB). Peak memory consumption was 250.3MB. Max. memory is 16.1GB. [2023-11-23 21:27:45,061 INFO L158 Benchmark]: Witness Printer took 211.34ms. Allocated memory is still 526.4MB. Free memory was 198.0MB in the beginning and 189.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 21:27:45,063 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 88.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 504.65ms. Allocated memory is still 174.1MB. Free memory was 138.6MB in the beginning and 127.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.64ms. Allocated memory is still 174.1MB. Free memory was 127.5MB in the beginning and 125.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.32ms. Allocated memory is still 174.1MB. Free memory was 125.4MB in the beginning and 124.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 644.70ms. Allocated memory is still 174.1MB. Free memory was 123.3MB in the beginning and 94.0MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 28459.65ms. Allocated memory was 174.1MB in the beginning and 526.4MB in the end (delta: 352.3MB). Free memory was 93.0MB in the beginning and 198.0MB in the end (delta: -105.0MB). Peak memory consumption was 250.3MB. Max. memory is 16.1GB. * Witness Printer took 211.34ms. Allocated memory is still 526.4MB. Free memory was 198.0MB in the beginning and 189.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] - GenericResultAtLocation [Line: 58]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [58] - GenericResultAtLocation [Line: 96]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [96] - GenericResultAtLocation [Line: 199]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [199] - GenericResultAtLocation [Line: 308]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [308] - GenericResultAtLocation [Line: 674]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [674] - GenericResultAtLocation [Line: 724]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [724] - GenericResultAtLocation [Line: 789]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [789] * 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: 54]: 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, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 28.4s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1190 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1165 mSDsluCounter, 1648 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1129 mSDsCounter, 610 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2009 IncrementalHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 610 mSolverCounterUnsat, 519 mSDtfsCounter, 2009 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 662 GetRequests, 461 SyntacticMatches, 14 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3773 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=404occurred in iteration=8, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 146 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 575 PreInvPairs, 600 NumberOfFragments, 423 HoareAnnotationTreeSize, 575 FomulaSimplifications, 2947 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 2572 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 612 NumberOfCodeBlocks, 612 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 742 ConstructedInterpolants, 0 QuantifiedInterpolants, 2548 SizeOfPredicates, 25 NumberOfNonLiveVariables, 922 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 237/373 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 734]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 735]: Loop Invariant Derived loop invariant: ((((2 == waterLevel) && (1 == systemActive)) && (splverifierCounter == 0)) || ((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-23 21:27:45,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deb754d2-7113-4f84-ac8d-bc17b066c5fc/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE