./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product08.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product08.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh --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 315d60eb588d6482efeebc0b747aa91d22e611dd88f8ad5f52fb821083a93df1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:16:36,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:16:36,358 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 18:16:36,363 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:16:36,363 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:16:36,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:16:36,389 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:16:36,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:16:36,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:16:36,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:16:36,392 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:16:36,392 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:16:36,393 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:16:36,393 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:16:36,394 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:16:36,394 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:16:36,395 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:16:36,395 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:16:36,396 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:16:36,396 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:16:36,397 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:16:36,397 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:16:36,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:16:36,398 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:16:36,399 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:16:36,399 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:16:36,399 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:16:36,400 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:16:36,400 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:16:36,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:16:36,401 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:16:36,401 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:16:36,401 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:16:36,402 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:16:36,402 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:16:36,402 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:16:36,402 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:16:36,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:16:36,403 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:16:36,403 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:16:36,403 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:16:36,403 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:16:36,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:16:36,404 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:16:36,404 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:16:36,404 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:16:36,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:16:36,404 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_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 315d60eb588d6482efeebc0b747aa91d22e611dd88f8ad5f52fb821083a93df1 [2023-12-02 18:16:36,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:16:36,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:16:36,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:16:36,665 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:16:36,665 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:16:36,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/minepump_spec4_product08.cil.c [2023-12-02 18:16:39,525 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:16:39,749 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:16:39,750 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/sv-benchmarks/c/product-lines/minepump_spec4_product08.cil.c [2023-12-02 18:16:39,771 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/data/84aac0c24/a3b7ee969aec4b8bbf9453e33e8d5d41/FLAGa617cf366 [2023-12-02 18:16:39,786 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/data/84aac0c24/a3b7ee969aec4b8bbf9453e33e8d5d41 [2023-12-02 18:16:39,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:16:39,791 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:16:39,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:16:39,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:16:39,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:16:39,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:16:39" (1/1) ... [2023-12-02 18:16:39,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105105d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:39, skipping insertion in model container [2023-12-02 18:16:39,800 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:16:39" (1/1) ... [2023-12-02 18:16:39,852 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:16:40,105 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_6905743c-c4b0-4b32-9602-0c2b4d298172/sv-benchmarks/c/product-lines/minepump_spec4_product08.cil.c[17389,17402] [2023-12-02 18:16:40,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:16:40,123 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:16:40,134 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] [2023-12-02 18:16:40,136 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [135] [2023-12-02 18:16:40,137 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [173] [2023-12-02 18:16:40,137 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [272] [2023-12-02 18:16:40,138 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [638] [2023-12-02 18:16:40,138 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [666] [2023-12-02 18:16:40,138 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [826] [2023-12-02 18:16:40,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [895] [2023-12-02 18:16:40,194 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_6905743c-c4b0-4b32-9602-0c2b4d298172/sv-benchmarks/c/product-lines/minepump_spec4_product08.cil.c[17389,17402] [2023-12-02 18:16:40,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:16:40,216 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:16:40,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:40 WrapperNode [2023-12-02 18:16:40,217 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:16:40,218 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:16:40,218 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:16:40,218 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:16:40,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:40" (1/1) ... [2023-12-02 18:16:40,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:40" (1/1) ... [2023-12-02 18:16:40,265 INFO L138 Inliner]: procedures = 52, calls = 95, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 166 [2023-12-02 18:16:40,265 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:16:40,266 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:16:40,266 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:16:40,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:16:40,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:40" (1/1) ... [2023-12-02 18:16:40,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:40" (1/1) ... [2023-12-02 18:16:40,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:40" (1/1) ... [2023-12-02 18:16:40,280 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:40" (1/1) ... [2023-12-02 18:16:40,285 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:40" (1/1) ... [2023-12-02 18:16:40,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:40" (1/1) ... [2023-12-02 18:16:40,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:40" (1/1) ... [2023-12-02 18:16:40,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:40" (1/1) ... [2023-12-02 18:16:40,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:16:40,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:16:40,297 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:16:40,297 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:16:40,298 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:40" (1/1) ... [2023-12-02 18:16:40,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:16:40,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:16:40,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:16:40,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:16:40,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:16:40,372 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-02 18:16:40,372 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-02 18:16:40,373 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 18:16:40,373 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 18:16:40,373 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 18:16:40,373 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 18:16:40,373 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-02 18:16:40,373 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-02 18:16:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-12-02 18:16:40,374 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-12-02 18:16:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:16:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-02 18:16:40,374 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-02 18:16:40,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:16:40,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:16:40,441 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:16:40,443 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:16:40,636 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:16:40,727 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:16:40,727 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 18:16:40,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:16:40 BoogieIcfgContainer [2023-12-02 18:16:40,729 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:16:40,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:16:40,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:16:40,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:16:40,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:16:39" (1/3) ... [2023-12-02 18:16:40,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14671436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:16:40, skipping insertion in model container [2023-12-02 18:16:40,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:16:40" (2/3) ... [2023-12-02 18:16:40,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14671436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:16:40, skipping insertion in model container [2023-12-02 18:16:40,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:16:40" (3/3) ... [2023-12-02 18:16:40,738 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product08.cil.c [2023-12-02 18:16:40,755 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:16:40,755 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 18:16:40,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:16:40,805 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;@4a4ba108, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:16:40,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 18:16:40,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 41 states have internal predecessors, (50), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 18:16:40,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 18:16:40,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:16:40,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:16:40,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:16:40,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:16:40,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1578644705, now seen corresponding path program 1 times [2023-12-02 18:16:40,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:16:40,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418916291] [2023-12-02 18:16:40,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:16:40,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:16:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:16:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:16:41,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:16:41,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418916291] [2023-12-02 18:16:41,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418916291] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:16:41,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:16:41,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:16:41,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566233947] [2023-12-02 18:16:41,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:16:41,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:16:41,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:16:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:16:41,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:16:41,071 INFO L87 Difference]: Start difference. First operand has 52 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 41 states have internal predecessors, (50), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:16:41,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:16:41,131 INFO L93 Difference]: Finished difference Result 102 states and 141 transitions. [2023-12-02 18:16:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:16:41,134 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 18:16:41,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:16:41,143 INFO L225 Difference]: With dead ends: 102 [2023-12-02 18:16:41,143 INFO L226 Difference]: Without dead ends: 47 [2023-12-02 18:16:41,147 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 [2023-12-02 18:16:41,150 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:16:41,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:16:41,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-02 18:16:41,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-12-02 18:16:41,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 37 states have internal predecessors, (42), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 18:16:41,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2023-12-02 18:16:41,194 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 12 [2023-12-02 18:16:41,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:16:41,194 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2023-12-02 18:16:41,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:16:41,195 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2023-12-02 18:16:41,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 18:16:41,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:16:41,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:16:41,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:16:41,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:16:41,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:16:41,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1639255572, now seen corresponding path program 1 times [2023-12-02 18:16:41,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:16:41,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647629309] [2023-12-02 18:16:41,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:16:41,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:16:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:16:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:16:41,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:16:41,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647629309] [2023-12-02 18:16:41,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647629309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:16:41,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:16:41,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:16:41,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913760709] [2023-12-02 18:16:41,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:16:41,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:16:41,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:16:41,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:16:41,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:16:41,289 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:16:41,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:16:41,323 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2023-12-02 18:16:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:16:41,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-02 18:16:41,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:16:41,325 INFO L225 Difference]: With dead ends: 66 [2023-12-02 18:16:41,325 INFO L226 Difference]: Without dead ends: 39 [2023-12-02 18:16:41,326 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 [2023-12-02 18:16:41,327 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 14 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:16:41,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 58 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:16:41,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-02 18:16:41,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-02 18:16:41,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 32 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 18:16:41,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2023-12-02 18:16:41,336 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 13 [2023-12-02 18:16:41,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:16:41,337 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2023-12-02 18:16:41,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:16:41,337 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2023-12-02 18:16:41,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 18:16:41,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:16:41,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:16:41,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 18:16:41,339 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:16:41,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:16:41,339 INFO L85 PathProgramCache]: Analyzing trace with hash -224848603, now seen corresponding path program 1 times [2023-12-02 18:16:41,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:16:41,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185861015] [2023-12-02 18:16:41,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:16:41,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:16:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:16:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:16:41,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:16:41,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185861015] [2023-12-02 18:16:41,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185861015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:16:41,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:16:41,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:16:41,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109069727] [2023-12-02 18:16:41,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:16:41,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:16:41,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:16:41,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:16:41,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:16:41,443 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:16:41,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:16:41,538 INFO L93 Difference]: Finished difference Result 105 states and 136 transitions. [2023-12-02 18:16:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:16:41,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 18:16:41,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:16:41,541 INFO L225 Difference]: With dead ends: 105 [2023-12-02 18:16:41,541 INFO L226 Difference]: Without dead ends: 68 [2023-12-02 18:16:41,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:16:41,544 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 73 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:16:41,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 85 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:16:41,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-02 18:16:41,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2023-12-02 18:16:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 53 states have internal predecessors, (61), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (12), 8 states have call predecessors, (12), 11 states have call successors, (12) [2023-12-02 18:16:41,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2023-12-02 18:16:41,562 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 16 [2023-12-02 18:16:41,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:16:41,562 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2023-12-02 18:16:41,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:16:41,563 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2023-12-02 18:16:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 18:16:41,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:16:41,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:16:41,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 18:16:41,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:16:41,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:16:41,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1067287813, now seen corresponding path program 1 times [2023-12-02 18:16:41,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:16:41,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629431018] [2023-12-02 18:16:41,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:16:41,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:16:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:16:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:16:41,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:16:41,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629431018] [2023-12-02 18:16:41,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629431018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:16:41,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:16:41,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:16:41,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891374222] [2023-12-02 18:16:41,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:16:41,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:16:41,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:16:41,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:16:41,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:16:41,763 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:16:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:16:41,897 INFO L93 Difference]: Finished difference Result 192 states and 263 transitions. [2023-12-02 18:16:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:16:41,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-02 18:16:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:16:41,901 INFO L225 Difference]: With dead ends: 192 [2023-12-02 18:16:41,901 INFO L226 Difference]: Without dead ends: 129 [2023-12-02 18:16:41,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:16:41,904 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 41 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:16:41,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 169 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:16:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-12-02 18:16:41,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 108. [2023-12-02 18:16:41,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 77 states have (on average 1.3376623376623376) internal successors, (103), 88 states have internal predecessors, (103), 16 states have call successors, (16), 14 states have call predecessors, (16), 14 states have return successors, (18), 13 states have call predecessors, (18), 16 states have call successors, (18) [2023-12-02 18:16:41,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 137 transitions. [2023-12-02 18:16:41,953 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 137 transitions. Word has length 19 [2023-12-02 18:16:41,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:16:41,954 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 137 transitions. [2023-12-02 18:16:41,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:16:41,954 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 137 transitions. [2023-12-02 18:16:41,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 18:16:41,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:16:41,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:16:41,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 18:16:41,957 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:16:41,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:16:41,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1944676589, now seen corresponding path program 1 times [2023-12-02 18:16:41,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:16:41,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349790657] [2023-12-02 18:16:41,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:16:41,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:16:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:16:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:16:42,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:16:42,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349790657] [2023-12-02 18:16:42,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349790657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:16:42,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:16:42,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 18:16:42,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861614088] [2023-12-02 18:16:42,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:16:42,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:16:42,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:16:42,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:16:42,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:16:42,154 INFO L87 Difference]: Start difference. First operand 108 states and 137 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:16:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:16:42,371 INFO L93 Difference]: Finished difference Result 227 states and 295 transitions. [2023-12-02 18:16:42,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:16:42,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-12-02 18:16:42,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:16:42,374 INFO L225 Difference]: With dead ends: 227 [2023-12-02 18:16:42,374 INFO L226 Difference]: Without dead ends: 164 [2023-12-02 18:16:42,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:16:42,377 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 92 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:16:42,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 144 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:16:42,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-02 18:16:42,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 157. [2023-12-02 18:16:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 112 states have (on average 1.3125) internal successors, (147), 127 states have internal predecessors, (147), 23 states have call successors, (23), 21 states have call predecessors, (23), 21 states have return successors, (26), 20 states have call predecessors, (26), 23 states have call successors, (26) [2023-12-02 18:16:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 196 transitions. [2023-12-02 18:16:42,408 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 196 transitions. Word has length 22 [2023-12-02 18:16:42,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:16:42,409 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 196 transitions. [2023-12-02 18:16:42,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:16:42,409 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 196 transitions. [2023-12-02 18:16:42,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 18:16:42,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:16:42,412 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:16:42,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 18:16:42,413 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:16:42,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:16:42,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1431123323, now seen corresponding path program 1 times [2023-12-02 18:16:42,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:16:42,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017919190] [2023-12-02 18:16:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:16:42,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:16:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:16:42,889 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:16:42,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:16:42,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017919190] [2023-12-02 18:16:42,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017919190] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:16:42,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129191717] [2023-12-02 18:16:42,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:16:42,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:16:42,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:16:42,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:16:42,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:16:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:16:42,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-02 18:16:42,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:16:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 18:16:43,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:16:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:16:44,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129191717] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:16:44,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1083051995] [2023-12-02 18:16:44,428 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-12-02 18:16:44,428 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:16:44,432 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:16:44,437 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:16:44,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:16:47,926 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 57 for LOIs [2023-12-02 18:16:47,944 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 53 for LOIs [2023-12-02 18:16:48,222 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:16:51,305 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1841#(and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (exists ((|v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_main_~tmp~0#1_BEFORE_CALL_15| Int) (|v_ULTIMATE.start_valid_product_#res#1_BEFORE_CALL_15| Int) (|v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_test_~tmp~6#1_BEFORE_CALL_15| Int) (|v_ULTIMATE.start_test_~tmp___0~1#1_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_15| Int)) (and (<= 1 |#StackHeapBarrier|) (<= |v_ULTIMATE.start_test_~tmp~6#1_BEFORE_CALL_15| 2147483647) (= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_13| 0) (= ~methaneLevelCritical~0 0) (= |v_ULTIMATE.start_valid_product_#res#1_BEFORE_CALL_15| 1) (= ~head~0.offset 0) (= |v_ULTIMATE.start_main_~tmp~0#1_BEFORE_CALL_15| 1) (= |v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_13| 0) (<= 0 (+ |v_ULTIMATE.start_test_~tmp~6#1_BEFORE_CALL_15| 2147483648)) (= ~head~0.base 0) (= |v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_15| 0) (= |v_ULTIMATE.start_test_~tmp___0~1#1_BEFORE_CALL_13| 0) (= ~cleanupTimeShifts~0 4))) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~4#1| 0) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (or (= |old(~waterLevel~0)| 1) (= |old(~waterLevel~0)| 0)) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (= 0 ~systemActive~0) (= ~waterLevel~0 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)))' at error location [2023-12-02 18:16:51,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:16:51,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:16:51,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 34 [2023-12-02 18:16:51,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464094408] [2023-12-02 18:16:51,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:16:51,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 18:16:51,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:16:51,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 18:16:51,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=2795, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 18:16:51,308 INFO L87 Difference]: Start difference. First operand 157 states and 196 transitions. Second operand has 35 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 27 states have internal predecessors, (79), 8 states have call successors, (12), 11 states have call predecessors, (12), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-02 18:16:51,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:16:51,634 INFO L93 Difference]: Finished difference Result 207 states and 264 transitions. [2023-12-02 18:16:51,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 18:16:51,635 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 27 states have internal predecessors, (79), 8 states have call successors, (12), 11 states have call predecessors, (12), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 40 [2023-12-02 18:16:51,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:16:51,635 INFO L225 Difference]: With dead ends: 207 [2023-12-02 18:16:51,635 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 18:16:51,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1464 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=544, Invalid=3238, Unknown=0, NotChecked=0, Total=3782 [2023-12-02 18:16:51,640 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 285 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:16:51,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 279 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:16:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 18:16:51,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 18:16:51,642 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) [2023-12-02 18:16:51,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 18:16:51,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2023-12-02 18:16:51,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:16:51,643 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 18:16:51,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 27 states have internal predecessors, (79), 8 states have call successors, (12), 11 states have call predecessors, (12), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-02 18:16:51,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 18:16:51,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 18:16:51,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 18:16:51,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:16:51,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:16:51,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 18:16:52,254 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 739 746) no Hoare annotation was computed. [2023-12-02 18:16:52,254 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 739 746) the Hoare annotation is: true [2023-12-02 18:16:52,254 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 698 704) no Hoare annotation was computed. [2023-12-02 18:16:52,254 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 698 704) the Hoare annotation is: true [2023-12-02 18:16:52,254 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 82 93) the Hoare annotation is: true [2023-12-02 18:16:52,254 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 82 93) no Hoare annotation was computed. [2023-12-02 18:16:52,255 INFO L895 garLoopResultBuilder]: At program point L725(line 725) the Hoare annotation is: (let ((.cse2 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (not (= 0 ~systemActive~0)))) (and (or (and .cse0 (= ~waterLevel~0 1) .cse1) .cse2 (not (= |old(~waterLevel~0)| 1))) (or .cse2 (and .cse0 (= 2 ~waterLevel~0) .cse1) (not (= |old(~waterLevel~0)| 2))))) [2023-12-02 18:16:52,255 INFO L899 garLoopResultBuilder]: For program point L725-1(lines 706 730) no Hoare annotation was computed. [2023-12-02 18:16:52,255 INFO L899 garLoopResultBuilder]: For program point L685-1(lines 685 691) no Hoare annotation was computed. [2023-12-02 18:16:52,255 INFO L899 garLoopResultBuilder]: For program point L714(lines 714 722) no Hoare annotation was computed. [2023-12-02 18:16:52,255 INFO L899 garLoopResultBuilder]: For program point L710(lines 710 727) no Hoare annotation was computed. [2023-12-02 18:16:52,255 INFO L899 garLoopResultBuilder]: For program point L900(line 900) no Hoare annotation was computed. [2023-12-02 18:16:52,255 INFO L899 garLoopResultBuilder]: For program point L653(lines 653 659) no Hoare annotation was computed. [2023-12-02 18:16:52,255 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 674 697) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0))) (and (or .cse0 (and .cse1 (= 2 ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) (and .cse1 (= ~waterLevel~0 1))))) [2023-12-02 18:16:52,256 INFO L899 garLoopResultBuilder]: For program point L649(lines 649 662) no Hoare annotation was computed. [2023-12-02 18:16:52,256 INFO L899 garLoopResultBuilder]: For program point L649-1(lines 641 665) no Hoare annotation was computed. [2023-12-02 18:16:52,256 INFO L899 garLoopResultBuilder]: For program point L678-1(lines 677 696) no Hoare annotation was computed. [2023-12-02 18:16:52,256 INFO L895 garLoopResultBuilder]: At program point L720(line 720) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 2))) (or .cse0 (not (= |old(~waterLevel~0)| 1))))) [2023-12-02 18:16:52,256 INFO L895 garLoopResultBuilder]: At program point L716(line 716) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 2))) (or .cse0 (not (= |old(~waterLevel~0)| 1))))) [2023-12-02 18:16:52,256 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 674 697) no Hoare annotation was computed. [2023-12-02 18:16:52,256 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 900) no Hoare annotation was computed. [2023-12-02 18:16:52,256 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 176 205) no Hoare annotation was computed. [2023-12-02 18:16:52,256 INFO L899 garLoopResultBuilder]: For program point L190(lines 190 194) no Hoare annotation was computed. [2023-12-02 18:16:52,257 INFO L902 garLoopResultBuilder]: At program point L190-1(lines 190 194) the Hoare annotation is: true [2023-12-02 18:16:52,257 INFO L902 garLoopResultBuilder]: At program point L186-2(lines 186 200) the Hoare annotation is: true [2023-12-02 18:16:52,257 INFO L902 garLoopResultBuilder]: At program point L182(line 182) the Hoare annotation is: true [2023-12-02 18:16:52,257 INFO L899 garLoopResultBuilder]: For program point L182-1(line 182) no Hoare annotation was computed. [2023-12-02 18:16:52,257 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 176 205) the Hoare annotation is: true [2023-12-02 18:16:52,257 INFO L899 garLoopResultBuilder]: For program point L201(lines 176 205) no Hoare annotation was computed. [2023-12-02 18:16:52,257 INFO L899 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2023-12-02 18:16:52,257 INFO L899 garLoopResultBuilder]: For program point L890(lines 827 894) no Hoare annotation was computed. [2023-12-02 18:16:52,257 INFO L899 garLoopResultBuilder]: For program point L857(lines 857 863) no Hoare annotation was computed. [2023-12-02 18:16:52,257 INFO L899 garLoopResultBuilder]: For program point L857-1(lines 857 863) no Hoare annotation was computed. [2023-12-02 18:16:52,258 INFO L895 garLoopResultBuilder]: At program point L849(line 849) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= 2 ~waterLevel~0) .cse1 .cse2) (and .cse0 .cse1 .cse2 (= ~waterLevel~0 1)))) [2023-12-02 18:16:52,258 INFO L899 garLoopResultBuilder]: For program point L259(lines 259 266) no Hoare annotation was computed. [2023-12-02 18:16:52,258 INFO L899 garLoopResultBuilder]: For program point L259-2(lines 259 266) no Hoare annotation was computed. [2023-12-02 18:16:52,258 INFO L895 garLoopResultBuilder]: At program point L887(lines 836 888) the Hoare annotation is: false [2023-12-02 18:16:52,258 INFO L899 garLoopResultBuilder]: For program point L875(lines 875 881) no Hoare annotation was computed. [2023-12-02 18:16:52,258 INFO L895 garLoopResultBuilder]: At program point L809(line 809) the Hoare annotation is: false [2023-12-02 18:16:52,258 INFO L895 garLoopResultBuilder]: At program point L875-2(lines 867 882) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= 2 ~waterLevel~0) .cse1 .cse2) (and .cse0 .cse1 .cse2 (= ~waterLevel~0 1)))) [2023-12-02 18:16:52,258 INFO L899 garLoopResultBuilder]: For program point L838(lines 837 886) no Hoare annotation was computed. [2023-12-02 18:16:52,258 INFO L899 garLoopResultBuilder]: For program point L867(lines 867 882) no Hoare annotation was computed. [2023-12-02 18:16:52,259 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 18:16:52,259 INFO L895 garLoopResultBuilder]: At program point L859(line 859) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= 2 ~waterLevel~0) .cse1 .cse2) (and .cse0 .cse1 .cse2 (= ~waterLevel~0 1)))) [2023-12-02 18:16:52,259 INFO L895 garLoopResultBuilder]: At program point L884(lines 837 886) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= 2 ~waterLevel~0) .cse1 .cse2) (and .cse0 .cse1 .cse2 (= ~waterLevel~0 1)))) [2023-12-02 18:16:52,259 INFO L899 garLoopResultBuilder]: For program point L847(lines 847 853) no Hoare annotation was computed. [2023-12-02 18:16:52,259 INFO L899 garLoopResultBuilder]: For program point L847-1(lines 847 853) no Hoare annotation was computed. [2023-12-02 18:16:52,259 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 18:16:52,259 INFO L899 garLoopResultBuilder]: For program point L807(lines 807 813) no Hoare annotation was computed. [2023-12-02 18:16:52,259 INFO L899 garLoopResultBuilder]: For program point L807-1(lines 807 813) no Hoare annotation was computed. [2023-12-02 18:16:52,259 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 70 81) no Hoare annotation was computed. [2023-12-02 18:16:52,260 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 70 81) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0)))) (and (or .cse0 (= 2 ~waterLevel~0) (not (= |old(~waterLevel~0)| 2))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1)))) [2023-12-02 18:16:52,262 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-02 18:16:52,264 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 18:16:52,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:16:52 BoogieIcfgContainer [2023-12-02 18:16:52,273 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 18:16:52,274 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 18:16:52,274 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 18:16:52,274 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 18:16:52,275 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:16:40" (3/4) ... [2023-12-02 18:16:52,277 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 18:16:52,280 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2023-12-02 18:16:52,280 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-12-02 18:16:52,280 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-12-02 18:16:52,281 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-12-02 18:16:52,281 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-12-02 18:16:52,281 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-12-02 18:16:52,289 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2023-12-02 18:16:52,289 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-12-02 18:16:52,290 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 18:16:52,290 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 18:16:52,291 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 18:16:52,318 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (2 == waterLevel))) || !((\old(waterLevel) == 2))) && ((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || ((pumpRunning == 0) && (waterLevel == 1)))) [2023-12-02 18:16:52,348 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (2 == waterLevel))) || !((\old(waterLevel) == 2))) && ((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || ((pumpRunning == 0) && (waterLevel == 1)))) [2023-12-02 18:16:52,397 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 18:16:52,397 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 18:16:52,397 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 18:16:52,398 INFO L158 Benchmark]: Toolchain (without parser) took 12607.63ms. Allocated memory was 167.8MB in the beginning and 518.0MB in the end (delta: 350.2MB). Free memory was 120.2MB in the beginning and 337.3MB in the end (delta: -217.1MB). Peak memory consumption was 134.7MB. Max. memory is 16.1GB. [2023-12-02 18:16:52,399 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:16:52,399 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.99ms. Allocated memory is still 167.8MB. Free memory was 119.7MB in the beginning and 101.3MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 18:16:52,400 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.62ms. Allocated memory is still 167.8MB. Free memory was 101.3MB in the beginning and 99.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 18:16:52,400 INFO L158 Benchmark]: Boogie Preprocessor took 29.45ms. Allocated memory is still 167.8MB. Free memory was 99.2MB in the beginning and 97.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:16:52,400 INFO L158 Benchmark]: RCFGBuilder took 433.13ms. Allocated memory is still 167.8MB. Free memory was 97.6MB in the beginning and 75.6MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-12-02 18:16:52,401 INFO L158 Benchmark]: TraceAbstraction took 11541.03ms. Allocated memory was 167.8MB in the beginning and 518.0MB in the end (delta: 350.2MB). Free memory was 75.1MB in the beginning and 343.6MB in the end (delta: -268.5MB). Peak memory consumption was 84.4MB. Max. memory is 16.1GB. [2023-12-02 18:16:52,401 INFO L158 Benchmark]: Witness Printer took 123.80ms. Allocated memory is still 518.0MB. Free memory was 343.6MB in the beginning and 337.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 18:16:52,403 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 96.5MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 424.99ms. Allocated memory is still 167.8MB. Free memory was 119.7MB in the beginning and 101.3MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.62ms. Allocated memory is still 167.8MB. Free memory was 101.3MB in the beginning and 99.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.45ms. Allocated memory is still 167.8MB. Free memory was 99.2MB in the beginning and 97.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 433.13ms. Allocated memory is still 167.8MB. Free memory was 97.6MB in the beginning and 75.6MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 11541.03ms. Allocated memory was 167.8MB in the beginning and 518.0MB in the end (delta: 350.2MB). Free memory was 75.1MB in the beginning and 343.6MB in the end (delta: -268.5MB). Peak memory consumption was 84.4MB. Max. memory is 16.1GB. * Witness Printer took 123.80ms. Allocated memory is still 518.0MB. Free memory was 343.6MB in the beginning and 337.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] - GenericResultAtLocation [Line: 135]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [135] - GenericResultAtLocation [Line: 173]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [173] - GenericResultAtLocation [Line: 272]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [272] - GenericResultAtLocation [Line: 638]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [638] - GenericResultAtLocation [Line: 666]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [666] - GenericResultAtLocation [Line: 826]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [826] - GenericResultAtLocation [Line: 895]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [895] * 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: 900]: 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 7 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.5s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 516 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 505 mSDsluCounter, 786 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 561 mSDsCounter, 195 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 574 IncrementalHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 195 mSolverCounterUnsat, 225 mSDtfsCounter, 574 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1475 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157occurred in iteration=5, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 31 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 141 PreInvPairs, 163 NumberOfFragments, 254 HoareAnnotationTreeSize, 141 FomulaSimplifications, 670 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 837 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 1365 SizeOfPredicates, 7 NumberOfNonLiveVariables, 192 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 3/48 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: 836]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 837]: Loop Invariant Derived loop invariant: (((((pumpRunning == 0) && (2 == waterLevel)) && (tmp == 1)) && (splverifierCounter == 0)) || ((((pumpRunning == 0) && (tmp == 1)) && (splverifierCounter == 0)) && (waterLevel == 1))) - InvariantResult [Line: 186]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 674]: Loop Invariant Derived loop invariant: (((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (2 == waterLevel))) || !((\old(waterLevel) == 2))) && ((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || ((pumpRunning == 0) && (waterLevel == 1)))) RESULT: Ultimate proved your program to be correct! [2023-12-02 18:16:52,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6905743c-c4b0-4b32-9602-0c2b4d298172/bin/utaipan-verify-nQ1chXbOIh/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