./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ --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 db9cad3d4bb6f197e1ca94da7e6c4fb3038f74aed96fd168a277cfa6f57caad2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:54:08,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:54:08,179 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:54:08,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:54:08,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:54:08,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:54:08,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:54:08,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:54:08,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:54:08,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:54:08,238 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:54:08,239 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:54:08,240 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:54:08,240 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:54:08,241 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:54:08,242 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:54:08,242 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:54:08,243 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:54:08,243 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:54:08,244 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:54:08,245 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:54:08,245 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:54:08,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:54:08,247 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:54:08,247 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:54:08,248 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:54:08,248 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:54:08,249 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:54:08,249 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:54:08,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:54:08,250 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:54:08,251 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:54:08,251 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:54:08,267 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:54:08,268 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:54:08,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:54:08,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:54:08,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:54:08,269 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:54:08,270 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:54:08,270 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:54:08,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:54:08,271 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:54:08,271 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:54:08,271 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:54:08,271 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_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db9cad3d4bb6f197e1ca94da7e6c4fb3038f74aed96fd168a277cfa6f57caad2 [2023-11-19 04:54:08,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:54:08,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:54:08,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:54:08,614 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:54:08,614 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:54:08,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c [2023-11-19 04:54:11,740 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:54:12,201 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:54:12,203 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c [2023-11-19 04:54:12,224 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/data/6e14b48dc/454822f665d049f09398c40b06926fe4/FLAGd5d38ac4b [2023-11-19 04:54:12,247 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/data/6e14b48dc/454822f665d049f09398c40b06926fe4 [2023-11-19 04:54:12,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:54:12,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:54:12,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:54:12,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:54:12,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:54:12,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:54:12" (1/1) ... [2023-11-19 04:54:12,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74beabe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:12, skipping insertion in model container [2023-11-19 04:54:12,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:54:12" (1/1) ... [2023-11-19 04:54:12,323 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:54:12,592 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_a4325c13-ed68-49c0-816a-2369b70e29f8/sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c[14935,14948] [2023-11-19 04:54:12,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:54:12,631 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:54:12,640 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] [2023-11-19 04:54:12,641 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [160] [2023-11-19 04:54:12,642 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [211] [2023-11-19 04:54:12,642 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [577] [2023-11-19 04:54:12,642 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [680] [2023-11-19 04:54:12,643 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [689] [2023-11-19 04:54:12,643 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [757] [2023-11-19 04:54:12,643 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [985] [2023-11-19 04:54:12,702 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_a4325c13-ed68-49c0-816a-2369b70e29f8/sv-benchmarks/c/product-lines/minepump_spec5_product58.cil.c[14935,14948] [2023-11-19 04:54:12,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:54:12,747 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:54:12,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:12 WrapperNode [2023-11-19 04:54:12,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:54:12,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:54:12,761 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:54:12,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:54:12,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:12" (1/1) ... [2023-11-19 04:54:12,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:12" (1/1) ... [2023-11-19 04:54:12,833 INFO L138 Inliner]: procedures = 59, calls = 104, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 235 [2023-11-19 04:54:12,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:54:12,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:54:12,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:54:12,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:54:12,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:12" (1/1) ... [2023-11-19 04:54:12,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:12" (1/1) ... [2023-11-19 04:54:12,850 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:12" (1/1) ... [2023-11-19 04:54:12,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:12" (1/1) ... [2023-11-19 04:54:12,857 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:12" (1/1) ... [2023-11-19 04:54:12,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:12" (1/1) ... [2023-11-19 04:54:12,865 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:12" (1/1) ... [2023-11-19 04:54:12,867 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:12" (1/1) ... [2023-11-19 04:54:12,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:54:12,887 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:54:12,887 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:54:12,887 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:54:12,888 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:12" (1/1) ... [2023-11-19 04:54:12,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:54:12,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:54:12,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:54:12,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:54:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:54:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-19 04:54:12,997 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-19 04:54:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-19 04:54:12,998 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-19 04:54:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-19 04:54:12,998 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-19 04:54:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-11-19 04:54:12,999 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-11-19 04:54:12,999 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-19 04:54:13,000 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-19 04:54:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-11-19 04:54:13,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-11-19 04:54:13,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:54:13,001 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-19 04:54:13,001 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-19 04:54:13,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:54:13,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:54:13,126 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:54:13,128 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:54:13,483 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:54:13,653 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:54:13,653 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 04:54:13,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:13 BoogieIcfgContainer [2023-11-19 04:54:13,660 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:54:13,669 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:54:13,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:54:13,674 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:54:13,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:54:12" (1/3) ... [2023-11-19 04:54:13,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606eba2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:54:13, skipping insertion in model container [2023-11-19 04:54:13,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:12" (2/3) ... [2023-11-19 04:54:13,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606eba2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:54:13, skipping insertion in model container [2023-11-19 04:54:13,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:13" (3/3) ... [2023-11-19 04:54:13,680 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product58.cil.c [2023-11-19 04:54:13,716 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:54:13,716 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:54:13,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:54:13,799 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;@52cda934, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:54:13,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:54:13,804 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) [2023-11-19 04:54:13,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 04:54:13,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:13,814 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] [2023-11-19 04:54:13,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:13,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:13,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1005937234, now seen corresponding path program 1 times [2023-11-19 04:54:13,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:13,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049244432] [2023-11-19 04:54:13,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:13,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:54:14,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:14,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049244432] [2023-11-19 04:54:14,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049244432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:14,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:14,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:54:14,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707364206] [2023-11-19 04:54:14,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:14,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:54:14,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:14,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:54:14,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:54:14,078 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) [2023-11-19 04:54:14,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:14,150 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2023-11-19 04:54:14,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:54:14,161 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 [2023-11-19 04:54:14,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:14,174 INFO L225 Difference]: With dead ends: 114 [2023-11-19 04:54:14,175 INFO L226 Difference]: Without dead ends: 53 [2023-11-19 04:54:14,180 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 [2023-11-19 04:54:14,187 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:14,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:54:14,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-19 04:54:14,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-11-19 04:54:14,239 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) [2023-11-19 04:54:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2023-11-19 04:54:14,243 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 21 [2023-11-19 04:54:14,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:14,244 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2023-11-19 04:54:14,244 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) [2023-11-19 04:54:14,244 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2023-11-19 04:54:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 04:54:14,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:14,248 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] [2023-11-19 04:54:14,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:54:14,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:14,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:14,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1660980994, now seen corresponding path program 1 times [2023-11-19 04:54:14,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:14,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840535906] [2023-11-19 04:54:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:14,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:54:14,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:14,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840535906] [2023-11-19 04:54:14,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840535906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:14,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:14,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 04:54:14,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99118834] [2023-11-19 04:54:14,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:14,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:54:14,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:14,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:54:14,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:54:14,722 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 04:54:15,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:15,545 INFO L93 Difference]: Finished difference Result 220 states and 321 transitions. [2023-11-19 04:54:15,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 04:54:15,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 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 [2023-11-19 04:54:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:15,550 INFO L225 Difference]: With dead ends: 220 [2023-11-19 04:54:15,551 INFO L226 Difference]: Without dead ends: 169 [2023-11-19 04:54:15,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-11-19 04:54:15,555 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 121 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:15,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 467 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:54:15,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-19 04:54:15,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2023-11-19 04:54:15,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 107 states have (on average 1.2429906542056075) internal successors, (133), 118 states have internal predecessors, (133), 36 states have call successors, (36), 24 states have call predecessors, (36), 21 states have return successors, (64), 31 states have call predecessors, (64), 32 states have call successors, (64) [2023-11-19 04:54:15,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 233 transitions. [2023-11-19 04:54:15,609 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 233 transitions. Word has length 24 [2023-11-19 04:54:15,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:15,610 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 233 transitions. [2023-11-19 04:54:15,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 04:54:15,617 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 233 transitions. [2023-11-19 04:54:15,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 04:54:15,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:15,621 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] [2023-11-19 04:54:15,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:54:15,622 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:15,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:15,622 INFO L85 PathProgramCache]: Analyzing trace with hash 560583234, now seen corresponding path program 1 times [2023-11-19 04:54:15,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:15,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572717311] [2023-11-19 04:54:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:15,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:16,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:54:16,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:16,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572717311] [2023-11-19 04:54:16,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572717311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:16,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:16,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 04:54:16,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004632863] [2023-11-19 04:54:16,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:16,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:54:16,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:16,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:54:16,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:54:16,184 INFO L87 Difference]: Start difference. First operand 165 states and 233 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:54:16,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:16,576 INFO L93 Difference]: Finished difference Result 581 states and 893 transitions. [2023-11-19 04:54:16,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:54:16,578 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2023-11-19 04:54:16,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:16,594 INFO L225 Difference]: With dead ends: 581 [2023-11-19 04:54:16,595 INFO L226 Difference]: Without dead ends: 418 [2023-11-19 04:54:16,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:54:16,601 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 163 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:16,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 340 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:54:16,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-11-19 04:54:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 362. [2023-11-19 04:54:16,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 232 states have (on average 1.2370689655172413) internal successors, (287), 256 states have internal predecessors, (287), 83 states have call successors, (83), 56 states have call predecessors, (83), 46 states have return successors, (182), 65 states have call predecessors, (182), 73 states have call successors, (182) [2023-11-19 04:54:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 552 transitions. [2023-11-19 04:54:16,712 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 552 transitions. Word has length 32 [2023-11-19 04:54:16,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:16,713 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 552 transitions. [2023-11-19 04:54:16,713 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), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:54:16,713 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 552 transitions. [2023-11-19 04:54:16,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 04:54:16,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:16,721 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] [2023-11-19 04:54:16,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:54:16,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:16,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:16,723 INFO L85 PathProgramCache]: Analyzing trace with hash 704325423, now seen corresponding path program 1 times [2023-11-19 04:54:16,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:16,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772447137] [2023-11-19 04:54:16,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:16,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:54:17,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:17,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772447137] [2023-11-19 04:54:17,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772447137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:17,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:17,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 04:54:17,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247073205] [2023-11-19 04:54:17,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:17,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:54:17,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:17,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:54:17,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:54:17,037 INFO L87 Difference]: Start difference. First operand 362 states and 552 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 04:54:17,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:17,760 INFO L93 Difference]: Finished difference Result 993 states and 1619 transitions. [2023-11-19 04:54:17,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 04:54:17,761 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), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2023-11-19 04:54:17,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:17,773 INFO L225 Difference]: With dead ends: 993 [2023-11-19 04:54:17,773 INFO L226 Difference]: Without dead ends: 774 [2023-11-19 04:54:17,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:54:17,788 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 226 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:17,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 416 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:54:17,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2023-11-19 04:54:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 639. [2023-11-19 04:54:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 415 states have (on average 1.2313253012048193) internal successors, (511), 457 states have internal predecessors, (511), 141 states have call successors, (141), 93 states have call predecessors, (141), 82 states have return successors, (307), 115 states have call predecessors, (307), 125 states have call successors, (307) [2023-11-19 04:54:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 959 transitions. [2023-11-19 04:54:17,958 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 959 transitions. Word has length 35 [2023-11-19 04:54:17,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:17,959 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 959 transitions. [2023-11-19 04:54:17,959 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), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 04:54:17,959 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 959 transitions. [2023-11-19 04:54:17,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 04:54:17,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:17,970 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:17,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:54:17,971 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:17,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:17,972 INFO L85 PathProgramCache]: Analyzing trace with hash -967620177, now seen corresponding path program 1 times [2023-11-19 04:54:17,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:17,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71304475] [2023-11-19 04:54:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:17,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 04:54:18,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:18,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71304475] [2023-11-19 04:54:18,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71304475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:18,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:18,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:54:18,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656986107] [2023-11-19 04:54:18,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:18,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:54:18,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:18,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:54:18,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:54:18,102 INFO L87 Difference]: Start difference. First operand 639 states and 959 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 04:54:18,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:18,208 INFO L93 Difference]: Finished difference Result 923 states and 1282 transitions. [2023-11-19 04:54:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:54:18,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2023-11-19 04:54:18,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:18,214 INFO L225 Difference]: With dead ends: 923 [2023-11-19 04:54:18,214 INFO L226 Difference]: Without dead ends: 516 [2023-11-19 04:54:18,218 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 [2023-11-19 04:54:18,225 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 2 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 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 [2023-11-19 04:54:18,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 77 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:54:18,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-11-19 04:54:18,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2023-11-19 04:54:18,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 339 states have (on average 1.2359882005899705) internal successors, (419), 380 states have internal predecessors, (419), 94 states have call successors, (94), 77 states have call predecessors, (94), 82 states have return successors, (164), 85 states have call predecessors, (164), 94 states have call successors, (164) [2023-11-19 04:54:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 677 transitions. [2023-11-19 04:54:18,324 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 677 transitions. Word has length 50 [2023-11-19 04:54:18,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:18,325 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 677 transitions. [2023-11-19 04:54:18,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 04:54:18,325 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 677 transitions. [2023-11-19 04:54:18,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-19 04:54:18,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:18,330 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:18,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:54:18,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:18,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:18,331 INFO L85 PathProgramCache]: Analyzing trace with hash -937185032, now seen corresponding path program 1 times [2023-11-19 04:54:18,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:18,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368387763] [2023-11-19 04:54:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:18,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:54:18,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:18,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368387763] [2023-11-19 04:54:18,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368387763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:18,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:18,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 04:54:18,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825352553] [2023-11-19 04:54:18,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:18,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:54:18,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:18,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:54:18,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:54:18,599 INFO L87 Difference]: Start difference. First operand 516 states and 677 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 04:54:18,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:18,917 INFO L93 Difference]: Finished difference Result 803 states and 1138 transitions. [2023-11-19 04:54:18,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 04:54:18,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2023-11-19 04:54:18,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:18,923 INFO L225 Difference]: With dead ends: 803 [2023-11-19 04:54:18,924 INFO L226 Difference]: Without dead ends: 605 [2023-11-19 04:54:18,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-19 04:54:18,926 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 67 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:18,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 147 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:54:18,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2023-11-19 04:54:19,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 553. [2023-11-19 04:54:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 366 states have (on average 1.2322404371584699) internal successors, (451), 412 states have internal predecessors, (451), 98 states have call successors, (98), 77 states have call predecessors, (98), 88 states have return successors, (209), 90 states have call predecessors, (209), 98 states have call successors, (209) [2023-11-19 04:54:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 758 transitions. [2023-11-19 04:54:19,022 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 758 transitions. Word has length 52 [2023-11-19 04:54:19,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:19,023 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 758 transitions. [2023-11-19 04:54:19,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 04:54:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 758 transitions. [2023-11-19 04:54:19,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 04:54:19,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:19,028 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-19 04:54:19,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:54:19,028 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:19,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:19,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1201779355, now seen corresponding path program 1 times [2023-11-19 04:54:19,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:19,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885278242] [2023-11-19 04:54:19,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:19,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:19,302 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:54:19,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:19,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885278242] [2023-11-19 04:54:19,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885278242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:54:19,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062744471] [2023-11-19 04:54:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:19,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:54:19,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:54:19,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:54:19,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:54:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:19,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 04:54:19,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:19,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:54:19,715 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:54:19,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062744471] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:54:19,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1255096630] [2023-11-19 04:54:19,740 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-11-19 04:54:19,740 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:54:19,745 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:54:19,751 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:54:19,751 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:54:24,324 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 19 for LOIs [2023-11-19 04:54:24,330 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 49 for LOIs [2023-11-19 04:54:24,779 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 55 for LOIs [2023-11-19 04:54:24,803 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 48 for LOIs [2023-11-19 04:54:24,866 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:54:27,719 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8729#(and (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| |timeShift_getWaterLevel_#res#1|) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 0)) (= ~waterLevel~0 |timeShift_getWaterLevel_#res#1|) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 1) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1|) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| 2)) (= ~switchedOnBeforeTS~0 0))' at error location [2023-11-19 04:54:27,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:54:27,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:54:27,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2023-11-19 04:54:27,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036506344] [2023-11-19 04:54:27,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:54:27,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 04:54:27,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:27,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 04:54:27,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1520, Unknown=0, NotChecked=0, Total=1722 [2023-11-19 04:54:27,728 INFO L87 Difference]: Start difference. First operand 553 states and 758 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-19 04:54:28,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:28,305 INFO L93 Difference]: Finished difference Result 1769 states and 2589 transitions. [2023-11-19 04:54:28,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 04:54:28,306 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 55 [2023-11-19 04:54:28,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:28,315 INFO L225 Difference]: With dead ends: 1769 [2023-11-19 04:54:28,315 INFO L226 Difference]: Without dead ends: 1025 [2023-11-19 04:54:28,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=242, Invalid=1828, Unknown=0, NotChecked=0, Total=2070 [2023-11-19 04:54:28,322 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 173 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:28,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 454 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:54:28,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2023-11-19 04:54:28,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 887. [2023-11-19 04:54:28,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 586 states have (on average 1.21160409556314) internal successors, (710), 660 states have internal predecessors, (710), 156 states have call successors, (156), 130 states have call predecessors, (156), 144 states have return successors, (318), 146 states have call predecessors, (318), 156 states have call successors, (318) [2023-11-19 04:54:28,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1184 transitions. [2023-11-19 04:54:28,444 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1184 transitions. Word has length 55 [2023-11-19 04:54:28,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:28,445 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 1184 transitions. [2023-11-19 04:54:28,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-19 04:54:28,445 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1184 transitions. [2023-11-19 04:54:28,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 04:54:28,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:28,448 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-19 04:54:28,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:54:28,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:54:28,669 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:28,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:28,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1743656912, now seen corresponding path program 1 times [2023-11-19 04:54:28,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:28,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826798797] [2023-11-19 04:54:28,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:28,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 04:54:28,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:28,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826798797] [2023-11-19 04:54:28,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826798797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:28,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:28,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:54:28,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304085561] [2023-11-19 04:54:28,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:28,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:54:28,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:28,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:54:28,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:54:28,824 INFO L87 Difference]: Start difference. First operand 887 states and 1184 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-19 04:54:28,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:28,946 INFO L93 Difference]: Finished difference Result 1342 states and 1790 transitions. [2023-11-19 04:54:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:54:28,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 57 [2023-11-19 04:54:28,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:28,951 INFO L225 Difference]: With dead ends: 1342 [2023-11-19 04:54:28,951 INFO L226 Difference]: Without dead ends: 487 [2023-11-19 04:54:28,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:54:28,956 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 48 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:28,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 78 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:54:28,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-11-19 04:54:29,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 456. [2023-11-19 04:54:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 298 states have (on average 1.1644295302013423) internal successors, (347), 332 states have internal predecessors, (347), 81 states have call successors, (81), 72 states have call predecessors, (81), 76 states have return successors, (135), 75 states have call predecessors, (135), 81 states have call successors, (135) [2023-11-19 04:54:29,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 563 transitions. [2023-11-19 04:54:29,015 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 563 transitions. Word has length 57 [2023-11-19 04:54:29,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:29,015 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 563 transitions. [2023-11-19 04:54:29,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-19 04:54:29,016 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 563 transitions. [2023-11-19 04:54:29,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 04:54:29,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:29,017 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 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, 1] [2023-11-19 04:54:29,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 04:54:29,018 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:29,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:29,018 INFO L85 PathProgramCache]: Analyzing trace with hash 112483453, now seen corresponding path program 1 times [2023-11-19 04:54:29,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:29,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356089427] [2023-11-19 04:54:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:29,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 04:54:29,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:29,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356089427] [2023-11-19 04:54:29,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356089427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:54:29,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596762719] [2023-11-19 04:54:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:29,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:54:29,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:54:29,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:54:29,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:54:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:29,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 04:54:29,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:54:29,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:54:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 04:54:30,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596762719] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:54:30,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1734262721] [2023-11-19 04:54:30,604 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-11-19 04:54:30,604 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:54:30,604 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:54:30,605 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:54:30,605 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:54:33,674 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 46 for LOIs [2023-11-19 04:54:33,689 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 33 for LOIs [2023-11-19 04:54:34,245 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 8 for LOIs [2023-11-19 04:54:34,247 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 30 for LOIs [2023-11-19 04:54:34,351 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 30 for LOIs [2023-11-19 04:54:34,355 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:54:37,339 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15251#(and (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| |timeShift_getWaterLevel_#res#1|) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 0)) (<= 0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1|) (= ~waterLevel~0 |timeShift_getWaterLevel_#res#1|) (<= ~pumpRunning~0 1) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1|) (= |old(~pumpRunning~0)| 0) (<= 0 (+ 2147483648 |timeShift_getWaterLevel_#res#1|)) (= |old(~waterLevel~0)| ~waterLevel~0) (<= |timeShift_getWaterLevel_#res#1| 2147483647) (exists ((|v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_12| Int) (|v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_12| Int)) (and (<= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_12| 2147483647) (or (and (<= |v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_12| 2147483647) (= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_12| 0) (<= 0 (+ |v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_12| 2147483648))) (and (= 1 ~systemActive~0) (not (= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_12| 0)))) (<= 0 (+ |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_12| 2147483648)))) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| 2)) (= ~switchedOnBeforeTS~0 0) (not (= 0 ~systemActive~0)) (= |old(~switchedOnBeforeTS~0)| 0))' at error location [2023-11-19 04:54:37,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:54:37,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:54:37,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 21 [2023-11-19 04:54:37,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025041363] [2023-11-19 04:54:37,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:54:37,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-19 04:54:37,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:37,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-19 04:54:37,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=2125, Unknown=0, NotChecked=0, Total=2450 [2023-11-19 04:54:37,344 INFO L87 Difference]: Start difference. First operand 456 states and 563 transitions. Second operand has 21 states, 18 states have (on average 5.222222222222222) internal successors, (94), 20 states have internal predecessors, (94), 11 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (23), 11 states have call predecessors, (23), 11 states have call successors, (23) [2023-11-19 04:54:39,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:39,176 INFO L93 Difference]: Finished difference Result 1174 states and 1499 transitions. [2023-11-19 04:54:39,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-19 04:54:39,177 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.222222222222222) internal successors, (94), 20 states have internal predecessors, (94), 11 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (23), 11 states have call predecessors, (23), 11 states have call successors, (23) Word has length 68 [2023-11-19 04:54:39,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:39,193 INFO L225 Difference]: With dead ends: 1174 [2023-11-19 04:54:39,194 INFO L226 Difference]: Without dead ends: 896 [2023-11-19 04:54:39,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2331 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=806, Invalid=5836, Unknown=0, NotChecked=0, Total=6642 [2023-11-19 04:54:39,202 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 564 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:39,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 626 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 04:54:39,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2023-11-19 04:54:39,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 769. [2023-11-19 04:54:39,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 506 states have (on average 1.1699604743083003) internal successors, (592), 560 states have internal predecessors, (592), 134 states have call successors, (134), 119 states have call predecessors, (134), 128 states have return successors, (237), 127 states have call predecessors, (237), 134 states have call successors, (237) [2023-11-19 04:54:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 963 transitions. [2023-11-19 04:54:39,333 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 963 transitions. Word has length 68 [2023-11-19 04:54:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:39,335 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 963 transitions. [2023-11-19 04:54:39,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.222222222222222) internal successors, (94), 20 states have internal predecessors, (94), 11 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (23), 11 states have call predecessors, (23), 11 states have call successors, (23) [2023-11-19 04:54:39,335 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 963 transitions. [2023-11-19 04:54:39,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 04:54:39,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:39,338 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] [2023-11-19 04:54:39,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 04:54:39,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:54:39,559 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:39,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:39,560 INFO L85 PathProgramCache]: Analyzing trace with hash 650221112, now seen corresponding path program 1 times [2023-11-19 04:54:39,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:39,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500684270] [2023-11-19 04:54:39,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:39,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:40,521 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 04:54:40,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:40,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500684270] [2023-11-19 04:54:40,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500684270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:54:40,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563475073] [2023-11-19 04:54:40,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:40,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:54:40,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:54:40,524 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:54:40,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:54:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:40,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 04:54:40,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 55 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 04:54:40,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:54:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 04:54:41,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563475073] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:54:41,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1351672215] [2023-11-19 04:54:41,544 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-11-19 04:54:41,545 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:54:41,548 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:54:41,549 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:54:41,549 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:54:44,599 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 46 for LOIs [2023-11-19 04:54:44,614 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 31 for LOIs [2023-11-19 04:54:44,915 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 37 for LOIs [2023-11-19 04:54:44,926 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 30 for LOIs [2023-11-19 04:54:45,009 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:54:48,018 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18548#(and (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| |timeShift_getWaterLevel_#res#1|) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 0)) (= ~waterLevel~0 |timeShift_getWaterLevel_#res#1|) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 1) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1|) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ ~waterLevel~0 2147483648)) (<= ~waterLevel~0 2147483647) (<= 0 ~pumpRunning~0) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| 2)) (= ~switchedOnBeforeTS~0 0))' at error location [2023-11-19 04:54:48,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:54:48,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:54:48,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 11] total 28 [2023-11-19 04:54:48,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474720937] [2023-11-19 04:54:48,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:54:48,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-19 04:54:48,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-19 04:54:48,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=2874, Unknown=0, NotChecked=0, Total=3192 [2023-11-19 04:54:48,023 INFO L87 Difference]: Start difference. First operand 769 states and 963 transitions. Second operand has 28 states, 27 states have (on average 4.703703703703703) internal successors, (127), 27 states have internal predecessors, (127), 12 states have call successors, (23), 7 states have call predecessors, (23), 11 states have return successors, (23), 12 states have call predecessors, (23), 12 states have call successors, (23) [2023-11-19 04:54:51,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:51,146 INFO L93 Difference]: Finished difference Result 1432 states and 1794 transitions. [2023-11-19 04:54:51,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-19 04:54:51,147 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.703703703703703) internal successors, (127), 27 states have internal predecessors, (127), 12 states have call successors, (23), 7 states have call predecessors, (23), 11 states have return successors, (23), 12 states have call predecessors, (23), 12 states have call successors, (23) Word has length 85 [2023-11-19 04:54:51,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:51,148 INFO L225 Difference]: With dead ends: 1432 [2023-11-19 04:54:51,148 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 04:54:51,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 238 SyntacticMatches, 11 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4966 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1551, Invalid=12491, Unknown=0, NotChecked=0, Total=14042 [2023-11-19 04:54:51,160 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 754 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:51,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 467 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 04:54:51,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 04:54:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 04:54:51,162 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) [2023-11-19 04:54:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 04:54:51,163 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2023-11-19 04:54:51,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:51,163 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 04:54:51,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.703703703703703) internal successors, (127), 27 states have internal predecessors, (127), 12 states have call successors, (23), 7 states have call predecessors, (23), 11 states have return successors, (23), 12 states have call predecessors, (23), 12 states have call successors, (23) [2023-11-19 04:54:51,164 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 04:54:51,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 04:54:51,167 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:54:51,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:54:51,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 04:54:51,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 04:54:55,902 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 790 796) no Hoare annotation was computed. [2023-11-19 04:54:55,902 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 790 796) the Hoare annotation is: true [2023-11-19 04:54:55,903 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 84 95) the Hoare annotation is: true [2023-11-19 04:54:55,903 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 84 95) no Hoare annotation was computed. [2023-11-19 04:54:55,903 INFO L899 garLoopResultBuilder]: For program point L770-2(lines 766 788) no Hoare annotation was computed. [2023-11-19 04:54:55,903 INFO L899 garLoopResultBuilder]: For program point L832(lines 832 840) no Hoare annotation was computed. [2023-11-19 04:54:55,903 INFO L895 garLoopResultBuilder]: At program point L192(line 192) the Hoare annotation is: (let ((.cse5 (= ~switchedOnBeforeTS~0 0))) (let ((.cse0 (< 1 |old(~waterLevel~0)|)) (.cse3 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| ~waterLevel~0)) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse7 (not .cse5)) (.cse2 (= ~pumpRunning~0 0)) (.cse9 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse10 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse11 (not (= |old(~waterLevel~0)| 2))) (.cse6 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (and .cse2 .cse3 .cse4 .cse5) .cse6) (let ((.cse8 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)))) (or .cse0 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (and .cse7 (or (< 0 |old(~waterLevel~0)|) .cse4) .cse2 .cse3 (or (< |old(~waterLevel~0)| 1) .cse8)) .cse6 (and .cse9 .cse3 (or (and .cse8 (<= 1 |old(~waterLevel~0)|)) (and (<= |old(~waterLevel~0)| 0) .cse4)) .cse10) (= |old(~switchedOnBeforeTS~0)| 0))) (or .cse1 .cse11 .cse6) (let ((.cse12 (= ~waterLevel~0 1)) (.cse13 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~0#1| 1))) (or (and .cse7 .cse2 .cse12 .cse13) (and .cse9 .cse12 .cse10 .cse13) .cse11 .cse6))))) [2023-11-19 04:54:55,904 INFO L899 garLoopResultBuilder]: For program point L192-1(line 192) no Hoare annotation was computed. [2023-11-19 04:54:55,904 INFO L899 garLoopResultBuilder]: For program point L828(lines 828 845) no Hoare annotation was computed. [2023-11-19 04:54:55,904 INFO L895 garLoopResultBuilder]: At program point L177(line 177) the Hoare annotation is: (let ((.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= ~switchedOnBeforeTS~0 0))) (.cse4 (= |old(~switchedOnBeforeTS~0)| 0)) (.cse5 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse6 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or (and .cse5 (= 2 ~waterLevel~0)) .cse2 .cse3) (or (< 1 |old(~waterLevel~0)|) .cse1 .cse3 (and .cse0 (= ~pumpRunning~0 0) .cse6) .cse4) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (and .cse5 .cse6 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse3 (< 2 |old(~waterLevel~0)|)))) [2023-11-19 04:54:55,904 INFO L899 garLoopResultBuilder]: For program point L177-1(line 177) no Hoare annotation was computed. [2023-11-19 04:54:55,904 INFO L899 garLoopResultBuilder]: For program point L685(line 685) no Hoare annotation was computed. [2023-11-19 04:54:55,905 INFO L895 garLoopResultBuilder]: At program point L838(line 838) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse4 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (<= 1 |old(~waterLevel~0)|)) (.cse2 (= 0 ~systemActive~0))) (and (or (and .cse0 (not (= ~pumpRunning~0 0)) (= ~waterLevel~0 1) .cse1) (not (= |old(~waterLevel~0)| 2)) .cse2) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (and .cse0 (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse3) (and (<= |old(~waterLevel~0)| 0) (= |old(~waterLevel~0)| ~waterLevel~0))) .cse1) .cse2 (< 2 |old(~waterLevel~0)|)) (or .cse4 (not (= |old(~waterLevel~0)| 1)) .cse2) (or .cse4 .cse3 .cse2))) [2023-11-19 04:54:55,905 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 204) no Hoare annotation was computed. [2023-11-19 04:54:55,905 INFO L899 garLoopResultBuilder]: For program point L190(lines 190 207) no Hoare annotation was computed. [2023-11-19 04:54:55,905 INFO L899 garLoopResultBuilder]: For program point L190-1(lines 182 210) no Hoare annotation was computed. [2023-11-19 04:54:55,905 INFO L895 garLoopResultBuilder]: At program point L843(line 843) the Hoare annotation is: (let ((.cse4 (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|))) (.cse1 (= |old(~pumpRunning~0)| 0)) (.cse6 (not (= |old(~waterLevel~0)| 1))) (.cse5 (<= 1 |old(~waterLevel~0)|)) (.cse3 (= 0 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (= ~switchedOnBeforeTS~0 0))) (and (or (not (= |old(~waterLevel~0)| 2)) (and .cse0 (= 2 ~waterLevel~0) .cse1 .cse2) .cse3) (or .cse4 .cse5 .cse3 (= |old(~switchedOnBeforeTS~0)| 0)) (or .cse4 .cse6 .cse1 .cse3) (or (not .cse1) (and .cse6 .cse5) .cse3 (and .cse0 (= |old(~waterLevel~0)| ~waterLevel~0) .cse2)))) [2023-11-19 04:54:55,905 INFO L899 garLoopResultBuilder]: For program point L843-1(lines 824 848) no Hoare annotation was computed. [2023-11-19 04:54:55,906 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 763 789) the Hoare annotation is: (let ((.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= ~switchedOnBeforeTS~0 0))) (.cse4 (= |old(~switchedOnBeforeTS~0)| 0)) (.cse5 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse6 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or (and .cse5 (= 2 ~waterLevel~0)) .cse2 .cse3) (or (< 1 |old(~waterLevel~0)|) .cse1 .cse3 (and .cse0 (= ~pumpRunning~0 0) .cse6) .cse4) (or (not (= |old(~switchedOnBeforeTS~0)| |old(~pumpRunning~0)|)) (and .cse5 .cse6 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse3 (< 2 |old(~waterLevel~0)|)))) [2023-11-19 04:54:55,906 INFO L899 garLoopResultBuilder]: For program point L777-1(lines 777 783) no Hoare annotation was computed. [2023-11-19 04:54:55,906 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 201) no Hoare annotation was computed. [2023-11-19 04:54:55,906 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 763 789) no Hoare annotation was computed. [2023-11-19 04:54:55,906 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 685) no Hoare annotation was computed. [2023-11-19 04:54:55,906 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 580 609) no Hoare annotation was computed. [2023-11-19 04:54:55,907 INFO L899 garLoopResultBuilder]: For program point L605(lines 580 609) no Hoare annotation was computed. [2023-11-19 04:54:55,907 INFO L899 garLoopResultBuilder]: For program point L601(line 601) no Hoare annotation was computed. [2023-11-19 04:54:55,907 INFO L899 garLoopResultBuilder]: For program point L594(lines 594 598) no Hoare annotation was computed. [2023-11-19 04:54:55,907 INFO L902 garLoopResultBuilder]: At program point L594-1(lines 594 598) the Hoare annotation is: true [2023-11-19 04:54:55,907 INFO L902 garLoopResultBuilder]: At program point L590-2(lines 590 604) the Hoare annotation is: true [2023-11-19 04:54:55,907 INFO L902 garLoopResultBuilder]: At program point L586(line 586) the Hoare annotation is: true [2023-11-19 04:54:55,908 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 580 609) the Hoare annotation is: true [2023-11-19 04:54:55,908 INFO L899 garLoopResultBuilder]: For program point L586-1(line 586) no Hoare annotation was computed. [2023-11-19 04:54:55,908 INFO L899 garLoopResultBuilder]: For program point L667(lines 667 674) no Hoare annotation was computed. [2023-11-19 04:54:55,908 INFO L899 garLoopResultBuilder]: For program point L667-2(lines 667 674) no Hoare annotation was computed. [2023-11-19 04:54:55,908 INFO L899 garLoopResultBuilder]: For program point L721(lines 721 727) no Hoare annotation was computed. [2023-11-19 04:54:55,908 INFO L899 garLoopResultBuilder]: For program point L721-1(lines 721 727) no Hoare annotation was computed. [2023-11-19 04:54:55,908 INFO L895 garLoopResultBuilder]: At program point L746(lines 701 748) the Hoare annotation is: (let ((.cse0 (<= ~waterLevel~0 1)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_main_~tmp~4#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 .cse3) (and (= 2 ~waterLevel~0) .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse2 .cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)))) [2023-11-19 04:54:55,909 INFO L895 garLoopResultBuilder]: At program point L713(line 713) the Hoare annotation is: (let ((.cse0 (<= ~waterLevel~0 1)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_main_~tmp~4#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 .cse3) (and (= 2 ~waterLevel~0) .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse2 .cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)))) [2023-11-19 04:54:55,909 INFO L895 garLoopResultBuilder]: At program point L739-2(lines 731 744) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_main_~tmp~4#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (<= ~waterLevel~0 2))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 .cse3))) [2023-11-19 04:54:55,909 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 04:54:55,909 INFO L899 garLoopResultBuilder]: For program point L702(lines 701 748) no Hoare annotation was computed. [2023-11-19 04:54:55,909 INFO L895 garLoopResultBuilder]: At program point L723(line 723) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_main_~tmp~4#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (<= ~waterLevel~0 2))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2) (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 .cse3))) [2023-11-19 04:54:55,909 INFO L899 garLoopResultBuilder]: For program point L752(lines 691 756) no Hoare annotation was computed. [2023-11-19 04:54:55,910 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 04:54:55,910 INFO L899 garLoopResultBuilder]: For program point L711(lines 711 717) no Hoare annotation was computed. [2023-11-19 04:54:55,910 INFO L899 garLoopResultBuilder]: For program point L711-1(lines 711 717) no Hoare annotation was computed. [2023-11-19 04:54:55,910 INFO L895 garLoopResultBuilder]: At program point L749(lines 700 750) the Hoare annotation is: false [2023-11-19 04:54:55,910 INFO L895 garLoopResultBuilder]: At program point L812(line 812) the Hoare annotation is: (let ((.cse2 (= ~pumpRunning~0 0)) (.cse0 (= 0 ~systemActive~0)) (.cse1 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or (< 2 ~waterLevel~0) .cse0 (= ~switchedOnBeforeTS~0 0) .cse1) (or (and .cse2 (= |processEnvironment__wrappee__highWaterSensor_~tmp~6#1| 0)) (< 1 ~waterLevel~0) .cse0 .cse1) (or .cse2 (not (= 2 ~waterLevel~0)) .cse0 .cse1))) [2023-11-19 04:54:55,910 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 798 822) the Hoare annotation is: (or (< 2 ~waterLevel~0) (= 0 ~systemActive~0) (= ~pumpRunning~0 ~switchedOnBeforeTS~0) (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|))) [2023-11-19 04:54:55,911 INFO L899 garLoopResultBuilder]: For program point L806(lines 806 814) no Hoare annotation was computed. [2023-11-19 04:54:55,911 INFO L899 garLoopResultBuilder]: For program point L802(lines 802 819) no Hoare annotation was computed. [2023-11-19 04:54:55,911 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 798 822) no Hoare annotation was computed. [2023-11-19 04:54:55,911 INFO L895 garLoopResultBuilder]: At program point L817(line 817) the Hoare annotation is: (let ((.cse0 (< 2 ~waterLevel~0)) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (= ~switchedOnBeforeTS~0 |old(~pumpRunning~0)|)))) (and (or .cse0 .cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0) .cse2) (or .cse0 (not (= |old(~pumpRunning~0)| 0)) .cse1 .cse2))) [2023-11-19 04:54:55,911 INFO L899 garLoopResultBuilder]: For program point L817-1(lines 798 822) no Hoare annotation was computed. [2023-11-19 04:54:55,911 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 72 83) no Hoare annotation was computed. [2023-11-19 04:54:55,912 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 72 83) the Hoare annotation is: (let ((.cse0 (< 1 |old(~waterLevel~0)|)) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 (not (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) .cse1 .cse2) (or (= 2 ~waterLevel~0) (not (= |old(~waterLevel~0)| 2)) .cse2) (or .cse0 (not (= ~pumpRunning~0 0)) .cse1 .cse2))) [2023-11-19 04:54:55,912 INFO L899 garLoopResultBuilder]: For program point isPumpRunningEXIT(lines 894 902) no Hoare annotation was computed. [2023-11-19 04:54:55,912 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 894 902) the Hoare annotation is: true [2023-11-19 04:54:55,914 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:55,915 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:54:55,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:54:55 BoogieIcfgContainer [2023-11-19 04:54:55,927 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:54:55,928 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:54:55,928 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:54:55,928 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:54:55,929 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:13" (3/4) ... [2023-11-19 04:54:55,930 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 04:54:55,934 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-11-19 04:54:55,934 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-11-19 04:54:55,934 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-11-19 04:54:55,934 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-11-19 04:54:55,934 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-11-19 04:54:55,935 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-11-19 04:54:55,935 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2023-11-19 04:54:55,944 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 51 nodes and edges [2023-11-19 04:54:55,945 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-19 04:54:55,946 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-19 04:54:55,946 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 04:54:55,947 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 04:54:56,064 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:54:56,064 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 04:54:56,064 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:54:56,065 INFO L158 Benchmark]: Toolchain (without parser) took 43813.10ms. Allocated memory was 153.1MB in the beginning and 1.0GB in the end (delta: 878.7MB). Free memory was 120.2MB in the beginning and 736.5MB in the end (delta: -616.3MB). Peak memory consumption was 265.0MB. Max. memory is 16.1GB. [2023-11-19 04:54:56,065 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:54:56,066 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.70ms. Allocated memory is still 153.1MB. Free memory was 120.2MB in the beginning and 100.3MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 04:54:56,066 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.32ms. Allocated memory is still 153.1MB. Free memory was 100.3MB in the beginning and 98.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:54:56,066 INFO L158 Benchmark]: Boogie Preprocessor took 36.03ms. Allocated memory is still 153.1MB. Free memory was 98.2MB in the beginning and 96.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:54:56,067 INFO L158 Benchmark]: RCFGBuilder took 773.79ms. Allocated memory is still 153.1MB. Free memory was 96.5MB in the beginning and 66.7MB in the end (delta: 29.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-19 04:54:56,067 INFO L158 Benchmark]: TraceAbstraction took 42258.54ms. Allocated memory was 153.1MB in the beginning and 1.0GB in the end (delta: 878.7MB). Free memory was 65.8MB in the beginning and 743.8MB in the end (delta: -678.1MB). Peak memory consumption was 569.1MB. Max. memory is 16.1GB. [2023-11-19 04:54:56,068 INFO L158 Benchmark]: Witness Printer took 136.90ms. Allocated memory is still 1.0GB. Free memory was 743.8MB in the beginning and 736.5MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 04:54:56,069 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 121.6MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 506.70ms. Allocated memory is still 153.1MB. Free memory was 120.2MB in the beginning and 100.3MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.32ms. Allocated memory is still 153.1MB. Free memory was 100.3MB in the beginning and 98.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.03ms. Allocated memory is still 153.1MB. Free memory was 98.2MB in the beginning and 96.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 773.79ms. Allocated memory is still 153.1MB. Free memory was 96.5MB in the beginning and 66.7MB in the end (delta: 29.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 42258.54ms. Allocated memory was 153.1MB in the beginning and 1.0GB in the end (delta: 878.7MB). Free memory was 65.8MB in the beginning and 743.8MB in the end (delta: -678.1MB). Peak memory consumption was 569.1MB. Max. memory is 16.1GB. * Witness Printer took 136.90ms. Allocated memory is still 1.0GB. Free memory was 743.8MB in the beginning and 736.5MB in the end (delta: 7.3MB). 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,"Environment.i","") [49] - GenericResultAtLocation [Line: 160]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [160] - GenericResultAtLocation [Line: 211]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [211] - GenericResultAtLocation [Line: 577]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [577] - GenericResultAtLocation [Line: 680]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [680] - GenericResultAtLocation [Line: 689]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [689] - GenericResultAtLocation [Line: 757]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [757] - GenericResultAtLocation [Line: 985]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [985] * 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: 685]: 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: 42.2s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2148 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2118 mSDsluCounter, 3129 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2407 mSDsCounter, 1071 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4013 IncrementalHoareTripleChecker+Invalid, 5084 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1071 mSolverCounterUnsat, 722 mSDtfsCounter, 4013 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 879 GetRequests, 575 SyntacticMatches, 11 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8142 ImplicationChecksByTransitivity, 12.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=887occurred in iteration=7, InterpolantAutomatonStates: 182, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 543 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 1800 PreInvPairs, 1955 NumberOfFragments, 784 HoareAnnotationTreeSize, 1800 FomulaSimplifications, 18685 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 21 FomulaSimplificationsInter, 17947 FormulaSimplificationTreeSizeReductionInter, 3.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 687 NumberOfCodeBlocks, 687 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 879 ConstructedInterpolants, 0 QuantifiedInterpolants, 3208 SizeOfPredicates, 26 NumberOfNonLiveVariables, 934 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 380/472 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: 701]: Loop Invariant Derived loop invariant: (((((((pumpRunning == 0) && (waterLevel <= 1)) && (1 == systemActive)) && (tmp == 1)) && (splverifierCounter == 0)) || ((((2 == waterLevel) && (1 == systemActive)) && (tmp == 1)) && (splverifierCounter == 0))) || (((((waterLevel <= 1) && (1 == systemActive)) && (tmp == 1)) && (splverifierCounter == 0)) && (pumpRunning == switchedOnBeforeTS))) - InvariantResult [Line: 700]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 590]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-11-19 04:54:56,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4325c13-ed68-49c0-816a-2369b70e29f8/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE