./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7bcd24ea8f621c8db79e853f5aaf064ffcae573e6c1e9f03eb1f84bb0c15fc3c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:44:43,588 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:44:43,705 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:44:43,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:44:43,713 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:44:43,740 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:44:43,741 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:44:43,741 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:44:43,742 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:44:43,743 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:44:43,744 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:44:43,744 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:44:43,745 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:44:43,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:44:43,747 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:44:43,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:44:43,748 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:44:43,748 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:44:43,749 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:44:43,750 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:44:43,750 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:44:43,751 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:44:43,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:44:43,752 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:44:43,753 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:44:43,753 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:44:43,754 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:44:43,754 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:44:43,755 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:44:43,755 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:44:43,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:44:43,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:43,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:44:43,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:44:43,758 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:44:43,758 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:44:43,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:44:43,758 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:44:43,759 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:44:43,759 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:44:43,759 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:44:43,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:44:43,760 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7bcd24ea8f621c8db79e853f5aaf064ffcae573e6c1e9f03eb1f84bb0c15fc3c [2023-11-26 10:44:44,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:44:44,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:44:44,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:44:44,130 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:44:44,131 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:44:44,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c [2023-11-26 10:44:47,309 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:44:47,606 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:44:47,606 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c [2023-11-26 10:44:47,623 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/data/ad199bea0/ca99f30d3e334068aa76047cfee1003d/FLAGe28dca450 [2023-11-26 10:44:47,637 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/data/ad199bea0/ca99f30d3e334068aa76047cfee1003d [2023-11-26 10:44:47,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:44:47,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:44:47,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:47,644 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:44:47,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:44:47,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:47" (1/1) ... [2023-11-26 10:44:47,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f607523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:47, skipping insertion in model container [2023-11-26 10:44:47,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:44:47" (1/1) ... [2023-11-26 10:44:47,735 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:44:47,985 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_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c[8146,8159] [2023-11-26 10:44:48,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:48,080 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:44:48,091 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] [2023-11-26 10:44:48,092 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [160] [2023-11-26 10:44:48,093 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [418] [2023-11-26 10:44:48,093 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [488] [2023-11-26 10:44:48,093 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [526] [2023-11-26 10:44:48,093 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [535] [2023-11-26 10:44:48,094 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [584] [2023-11-26 10:44:48,094 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [950] [2023-11-26 10:44:48,119 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_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/sv-benchmarks/c/product-lines/minepump_spec5_product56.cil.c[8146,8159] [2023-11-26 10:44:48,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:44:48,182 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:44:48,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:48 WrapperNode [2023-11-26 10:44:48,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:44:48,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:48,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:44:48,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:44:48,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:48" (1/1) ... [2023-11-26 10:44:48,207 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:48" (1/1) ... [2023-11-26 10:44:48,255 INFO L138 Inliner]: procedures = 60, calls = 108, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 241 [2023-11-26 10:44:48,256 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:44:48,257 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:44:48,257 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:44:48,257 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:44:48,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:48" (1/1) ... [2023-11-26 10:44:48,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:48" (1/1) ... [2023-11-26 10:44:48,285 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:48" (1/1) ... [2023-11-26 10:44:48,304 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 10:44:48,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:48" (1/1) ... [2023-11-26 10:44:48,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:48" (1/1) ... [2023-11-26 10:44:48,311 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:48" (1/1) ... [2023-11-26 10:44:48,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:48" (1/1) ... [2023-11-26 10:44:48,330 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:48" (1/1) ... [2023-11-26 10:44:48,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:48" (1/1) ... [2023-11-26 10:44:48,334 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:44:48,335 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:44:48,335 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:44:48,335 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:44:48,336 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:48" (1/1) ... [2023-11-26 10:44:48,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:44:48,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:48,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:44:48,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:44:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:44:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-26 10:44:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-26 10:44:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-26 10:44:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-26 10:44:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-26 10:44:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-26 10:44:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-11-26 10:44:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-11-26 10:44:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-26 10:44:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-26 10:44:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2023-11-26 10:44:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2023-11-26 10:44:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-11-26 10:44:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-11-26 10:44:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-11-26 10:44:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-11-26 10:44:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:44:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-26 10:44:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-26 10:44:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:44:48,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:44:48,594 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:44:48,596 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:44:48,958 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:44:49,046 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:44:49,046 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 10:44:49,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:49 BoogieIcfgContainer [2023-11-26 10:44:49,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:44:49,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:44:49,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:44:49,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:44:49,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:44:47" (1/3) ... [2023-11-26 10:44:49,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59776c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:49, skipping insertion in model container [2023-11-26 10:44:49,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:44:48" (2/3) ... [2023-11-26 10:44:49,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59776c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:44:49, skipping insertion in model container [2023-11-26 10:44:49,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:49" (3/3) ... [2023-11-26 10:44:49,057 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product56.cil.c [2023-11-26 10:44:49,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:44:49,076 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:44:49,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:44:49,137 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@78586baa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:44:49,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:44:49,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 57 states have (on average 1.5263157894736843) internal successors, (87), 68 states have internal predecessors, (87), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-26 10:44:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-26 10:44:49,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:49,154 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:49,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:49,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:49,160 INFO L85 PathProgramCache]: Analyzing trace with hash 854361438, now seen corresponding path program 1 times [2023-11-26 10:44:49,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:49,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827711713] [2023-11-26 10:44:49,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:49,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 10:44:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:44:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:49,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:49,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827711713] [2023-11-26 10:44:49,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827711713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:49,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:49,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:44:49,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827964775] [2023-11-26 10:44:49,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:49,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:44:49,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:49,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:44:49,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:44:49,499 INFO L87 Difference]: Start difference. First operand has 85 states, 57 states have (on average 1.5263157894736843) internal successors, (87), 68 states have internal predecessors, (87), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:44:49,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:49,581 INFO L93 Difference]: Finished difference Result 168 states and 243 transitions. [2023-11-26 10:44:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:44:49,583 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-11-26 10:44:49,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:49,595 INFO L225 Difference]: With dead ends: 168 [2023-11-26 10:44:49,595 INFO L226 Difference]: Without dead ends: 80 [2023-11-26 10:44:49,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:44:49,604 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:49,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:49,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-26 10:44:49,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-26 10:44:49,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.4259259259259258) internal successors, (77), 64 states have internal predecessors, (77), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-26 10:44:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 110 transitions. [2023-11-26 10:44:49,658 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 110 transitions. Word has length 22 [2023-11-26 10:44:49,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:49,659 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 110 transitions. [2023-11-26 10:44:49,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:44:49,660 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 110 transitions. [2023-11-26 10:44:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-26 10:44:49,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:49,663 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:49,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:44:49,664 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:49,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:49,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1532484765, now seen corresponding path program 1 times [2023-11-26 10:44:49,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:49,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670858623] [2023-11-26 10:44:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:49,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:44:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:49,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:49,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670858623] [2023-11-26 10:44:49,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670858623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:49,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:49,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:49,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383165679] [2023-11-26 10:44:49,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:49,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:49,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:49,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:49,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:49,806 INFO L87 Difference]: Start difference. First operand 80 states and 110 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:44:49,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:49,885 INFO L93 Difference]: Finished difference Result 130 states and 178 transitions. [2023-11-26 10:44:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:49,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-11-26 10:44:49,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:49,888 INFO L225 Difference]: With dead ends: 130 [2023-11-26 10:44:49,888 INFO L226 Difference]: Without dead ends: 72 [2023-11-26 10:44:49,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:49,891 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 14 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:49,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 152 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:49,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-26 10:44:49,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-11-26 10:44:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 59 states have internal predecessors, (71), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 9 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-26 10:44:49,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 99 transitions. [2023-11-26 10:44:49,906 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 99 transitions. Word has length 23 [2023-11-26 10:44:49,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:49,906 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 99 transitions. [2023-11-26 10:44:49,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:44:49,907 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 99 transitions. [2023-11-26 10:44:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-26 10:44:49,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:49,916 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:49,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:44:49,916 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:49,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:49,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1076188903, now seen corresponding path program 1 times [2023-11-26 10:44:49,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:49,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635566635] [2023-11-26 10:44:49,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:49,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:50,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:44:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:50,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 10:44:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:50,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:50,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:50,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635566635] [2023-11-26 10:44:50,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635566635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:50,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:50,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:44:50,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71104452] [2023-11-26 10:44:50,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:50,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:44:50,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:50,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:44:50,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:50,074 INFO L87 Difference]: Start difference. First operand 72 states and 99 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:44:50,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:50,174 INFO L93 Difference]: Finished difference Result 212 states and 294 transitions. [2023-11-26 10:44:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:44:50,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-11-26 10:44:50,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:50,178 INFO L225 Difference]: With dead ends: 212 [2023-11-26 10:44:50,178 INFO L226 Difference]: Without dead ends: 142 [2023-11-26 10:44:50,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:44:50,181 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 90 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:50,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 178 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:44:50,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-26 10:44:50,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2023-11-26 10:44:50,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 113 states have internal predecessors, (137), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 17 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-26 10:44:50,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 193 transitions. [2023-11-26 10:44:50,211 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 193 transitions. Word has length 26 [2023-11-26 10:44:50,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:50,212 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 193 transitions. [2023-11-26 10:44:50,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:44:50,213 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 193 transitions. [2023-11-26 10:44:50,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 10:44:50,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:50,215 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:50,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:44:50,215 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:50,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash 439230069, now seen corresponding path program 1 times [2023-11-26 10:44:50,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:50,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422444190] [2023-11-26 10:44:50,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:50,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:50,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:44:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:50,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 10:44:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:44:50,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:50,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422444190] [2023-11-26 10:44:50,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422444190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:50,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:50,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:44:50,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995149009] [2023-11-26 10:44:50,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:50,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:50,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:50,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:50,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:50,401 INFO L87 Difference]: Start difference. First operand 139 states and 193 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:44:50,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:50,670 INFO L93 Difference]: Finished difference Result 368 states and 521 transitions. [2023-11-26 10:44:50,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:44:50,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2023-11-26 10:44:50,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:50,674 INFO L225 Difference]: With dead ends: 368 [2023-11-26 10:44:50,674 INFO L226 Difference]: Without dead ends: 231 [2023-11-26 10:44:50,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:44:50,679 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 51 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:50,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 378 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:44:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-26 10:44:50,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 226. [2023-11-26 10:44:50,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 157 states have (on average 1.3694267515923566) internal successors, (215), 174 states have internal predecessors, (215), 38 states have call successors, (38), 30 states have call predecessors, (38), 30 states have return successors, (50), 33 states have call predecessors, (50), 38 states have call successors, (50) [2023-11-26 10:44:50,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 303 transitions. [2023-11-26 10:44:50,718 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 303 transitions. Word has length 29 [2023-11-26 10:44:50,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:50,719 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 303 transitions. [2023-11-26 10:44:50,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:44:50,719 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 303 transitions. [2023-11-26 10:44:50,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-26 10:44:50,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:50,722 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:50,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:44:50,722 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:50,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:50,723 INFO L85 PathProgramCache]: Analyzing trace with hash 112415171, now seen corresponding path program 1 times [2023-11-26 10:44:50,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:50,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196336282] [2023-11-26 10:44:50,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:50,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:50,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:44:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:50,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 10:44:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:50,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:50,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:44:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:50,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:50,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196336282] [2023-11-26 10:44:50,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196336282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:50,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:50,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:44:50,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264177856] [2023-11-26 10:44:50,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:50,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:50,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:50,991 INFO L87 Difference]: Start difference. First operand 226 states and 303 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 10:44:51,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:51,403 INFO L93 Difference]: Finished difference Result 700 states and 983 transitions. [2023-11-26 10:44:51,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:44:51,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2023-11-26 10:44:51,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:51,418 INFO L225 Difference]: With dead ends: 700 [2023-11-26 10:44:51,419 INFO L226 Difference]: Without dead ends: 476 [2023-11-26 10:44:51,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:44:51,429 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 148 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:51,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 309 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:44:51,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-11-26 10:44:51,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 450. [2023-11-26 10:44:51,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 317 states have (on average 1.3217665615141956) internal successors, (419), 339 states have internal predecessors, (419), 69 states have call successors, (69), 53 states have call predecessors, (69), 63 states have return successors, (107), 72 states have call predecessors, (107), 69 states have call successors, (107) [2023-11-26 10:44:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 595 transitions. [2023-11-26 10:44:51,537 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 595 transitions. Word has length 43 [2023-11-26 10:44:51,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:51,537 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 595 transitions. [2023-11-26 10:44:51,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 10:44:51,538 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 595 transitions. [2023-11-26 10:44:51,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-26 10:44:51,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:51,546 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:51,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:44:51,546 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:51,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:51,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1801358913, now seen corresponding path program 1 times [2023-11-26 10:44:51,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:51,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56887022] [2023-11-26 10:44:51,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:51,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:51,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:44:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 10:44:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:51,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:51,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:44:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:51,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:51,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:51,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56887022] [2023-11-26 10:44:51,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56887022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:51,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:51,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:44:51,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179291080] [2023-11-26 10:44:51,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:51,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:44:51,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:51,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:44:51,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:44:51,734 INFO L87 Difference]: Start difference. First operand 450 states and 595 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:44:51,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:51,933 INFO L93 Difference]: Finished difference Result 908 states and 1223 transitions. [2023-11-26 10:44:51,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:44:51,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2023-11-26 10:44:51,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:51,938 INFO L225 Difference]: With dead ends: 908 [2023-11-26 10:44:51,939 INFO L226 Difference]: Without dead ends: 460 [2023-11-26 10:44:51,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:51,947 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 57 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:51,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 235 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:44:51,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-11-26 10:44:52,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 458. [2023-11-26 10:44:52,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 325 states have (on average 1.3138461538461539) internal successors, (427), 347 states have internal predecessors, (427), 69 states have call successors, (69), 53 states have call predecessors, (69), 63 states have return successors, (107), 72 states have call predecessors, (107), 69 states have call successors, (107) [2023-11-26 10:44:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 603 transitions. [2023-11-26 10:44:52,032 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 603 transitions. Word has length 43 [2023-11-26 10:44:52,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:52,034 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 603 transitions. [2023-11-26 10:44:52,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:44:52,035 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 603 transitions. [2023-11-26 10:44:52,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-26 10:44:52,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:52,038 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:52,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:44:52,038 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:52,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:52,039 INFO L85 PathProgramCache]: Analyzing trace with hash 213011011, now seen corresponding path program 1 times [2023-11-26 10:44:52,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:52,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438546463] [2023-11-26 10:44:52,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:52,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:52,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:44:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:52,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 10:44:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:52,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:52,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 10:44:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:52,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:52,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438546463] [2023-11-26 10:44:52,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438546463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:52,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:52,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:44:52,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67402543] [2023-11-26 10:44:52,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:52,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:44:52,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:52,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:44:52,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:44:52,194 INFO L87 Difference]: Start difference. First operand 458 states and 603 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 10:44:52,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:52,538 INFO L93 Difference]: Finished difference Result 852 states and 1142 transitions. [2023-11-26 10:44:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:44:52,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2023-11-26 10:44:52,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:52,542 INFO L225 Difference]: With dead ends: 852 [2023-11-26 10:44:52,542 INFO L226 Difference]: Without dead ends: 396 [2023-11-26 10:44:52,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:44:52,547 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 202 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:52,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 290 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:44:52,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-26 10:44:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 380. [2023-11-26 10:44:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 269 states have (on average 1.2862453531598512) internal successors, (346), 288 states have internal predecessors, (346), 58 states have call successors, (58), 44 states have call predecessors, (58), 52 states have return successors, (80), 59 states have call predecessors, (80), 58 states have call successors, (80) [2023-11-26 10:44:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 484 transitions. [2023-11-26 10:44:52,590 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 484 transitions. Word has length 43 [2023-11-26 10:44:52,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:52,590 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 484 transitions. [2023-11-26 10:44:52,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 10:44:52,591 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 484 transitions. [2023-11-26 10:44:52,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-26 10:44:52,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:52,594 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:52,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:44:52,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:52,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:52,598 INFO L85 PathProgramCache]: Analyzing trace with hash 540619359, now seen corresponding path program 1 times [2023-11-26 10:44:52,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:52,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333698159] [2023-11-26 10:44:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:52,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:52,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:44:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:52,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:44:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:52,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 10:44:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:52,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:52,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 10:44:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:44:52,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:52,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333698159] [2023-11-26 10:44:52,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333698159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:52,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:52,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 10:44:52,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788463051] [2023-11-26 10:44:52,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:52,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 10:44:52,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:52,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 10:44:52,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:44:52,883 INFO L87 Difference]: Start difference. First operand 380 states and 484 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 10:44:53,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:53,724 INFO L93 Difference]: Finished difference Result 1166 states and 1605 transitions. [2023-11-26 10:44:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-26 10:44:53,725 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 47 [2023-11-26 10:44:53,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:53,732 INFO L225 Difference]: With dead ends: 1166 [2023-11-26 10:44:53,732 INFO L226 Difference]: Without dead ends: 888 [2023-11-26 10:44:53,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2023-11-26 10:44:53,737 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 474 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:53,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 328 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:44:53,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2023-11-26 10:44:53,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 822. [2023-11-26 10:44:53,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 577 states have (on average 1.2703639514731369) internal successors, (733), 625 states have internal predecessors, (733), 129 states have call successors, (129), 95 states have call predecessors, (129), 115 states have return successors, (213), 127 states have call predecessors, (213), 129 states have call successors, (213) [2023-11-26 10:44:53,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1075 transitions. [2023-11-26 10:44:53,863 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1075 transitions. Word has length 47 [2023-11-26 10:44:53,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:53,864 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1075 transitions. [2023-11-26 10:44:53,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 10:44:53,864 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1075 transitions. [2023-11-26 10:44:53,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-26 10:44:53,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:53,868 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:53,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:44:53,869 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:53,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:53,870 INFO L85 PathProgramCache]: Analyzing trace with hash 994621290, now seen corresponding path program 1 times [2023-11-26 10:44:53,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:53,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384419260] [2023-11-26 10:44:53,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:53,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:53,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:44:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:53,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 10:44:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:53,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:53,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:53,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 10:44:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:53,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 10:44:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 10:44:53,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:53,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384419260] [2023-11-26 10:44:53,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384419260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:53,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:53,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:44:53,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239867154] [2023-11-26 10:44:53,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:53,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:44:53,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:53,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:44:53,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:53,974 INFO L87 Difference]: Start difference. First operand 822 states and 1075 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-26 10:44:54,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:54,436 INFO L93 Difference]: Finished difference Result 1382 states and 1801 transitions. [2023-11-26 10:44:54,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:44:54,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 72 [2023-11-26 10:44:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:54,441 INFO L225 Difference]: With dead ends: 1382 [2023-11-26 10:44:54,441 INFO L226 Difference]: Without dead ends: 562 [2023-11-26 10:44:54,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:44:54,445 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 220 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:54,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 241 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:44:54,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-26 10:44:54,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 536. [2023-11-26 10:44:54,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 379 states have (on average 1.2612137203166227) internal successors, (478), 411 states have internal predecessors, (478), 83 states have call successors, (83), 63 states have call predecessors, (83), 73 states have return successors, (126), 82 states have call predecessors, (126), 83 states have call successors, (126) [2023-11-26 10:44:54,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 687 transitions. [2023-11-26 10:44:54,519 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 687 transitions. Word has length 72 [2023-11-26 10:44:54,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:54,519 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 687 transitions. [2023-11-26 10:44:54,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-26 10:44:54,520 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 687 transitions. [2023-11-26 10:44:54,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-26 10:44:54,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:54,521 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:54,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:44:54,522 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:54,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:54,522 INFO L85 PathProgramCache]: Analyzing trace with hash 875974300, now seen corresponding path program 1 times [2023-11-26 10:44:54,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:54,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993512180] [2023-11-26 10:44:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:54,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:44:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 10:44:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:44:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:44:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-26 10:44:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 10:44:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 10:44:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 10:44:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 10:44:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 10:44:54,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:54,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993512180] [2023-11-26 10:44:54,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993512180] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:44:54,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193873046] [2023-11-26 10:44:54,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:54,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:54,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:54,833 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:54,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:44:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:54,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:44:54,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:44:55,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 10:44:55,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193873046] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:55,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:44:55,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 15 [2023-11-26 10:44:55,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776822099] [2023-11-26 10:44:55,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:55,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 10:44:55,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:55,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 10:44:55,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-26 10:44:55,364 INFO L87 Difference]: Start difference. First operand 536 states and 687 transitions. Second operand has 15 states, 11 states have (on average 9.272727272727273) internal successors, (102), 10 states have internal predecessors, (102), 6 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2023-11-26 10:44:56,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:56,983 INFO L93 Difference]: Finished difference Result 1173 states and 1546 transitions. [2023-11-26 10:44:56,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-26 10:44:56,984 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 9.272727272727273) internal successors, (102), 10 states have internal predecessors, (102), 6 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 87 [2023-11-26 10:44:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:56,986 INFO L225 Difference]: With dead ends: 1173 [2023-11-26 10:44:56,986 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 10:44:56,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 200 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=451, Invalid=1711, Unknown=0, NotChecked=0, Total=2162 [2023-11-26 10:44:56,992 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 380 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:56,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 933 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 10:44:56,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 10:44:56,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 10:44:56,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:44:56,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 10:44:56,994 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2023-11-26 10:44:56,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:56,995 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 10:44:56,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 9.272727272727273) internal successors, (102), 10 states have internal predecessors, (102), 6 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2023-11-26 10:44:56,995 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 10:44:56,995 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 10:44:56,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-26 10:44:57,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 10:44:57,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 10:44:57,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-26 10:44:59,953 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 293 300) no Hoare annotation was computed. [2023-11-26 10:44:59,953 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 293 300) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (< |old(~pumpRunning~0)| 1))) (and (or (< 2 ~waterLevel~0) .cse0 .cse1 (< ~switchedOnBeforeTS~0 1) .cse2) (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) .cse2))) [2023-11-26 10:44:59,953 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 200 206) no Hoare annotation was computed. [2023-11-26 10:44:59,954 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 200 206) the Hoare annotation is: true [2023-11-26 10:44:59,954 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 84 95) the Hoare annotation is: true [2023-11-26 10:44:59,954 INFO L899 garLoopResultBuilder]: For program point L88-1(lines 84 95) no Hoare annotation was computed. [2023-11-26 10:44:59,954 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 84 95) no Hoare annotation was computed. [2023-11-26 10:44:59,954 INFO L902 garLoopResultBuilder]: At program point L962-2(lines 962 976) the Hoare annotation is: true [2023-11-26 10:44:59,954 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 952 981) no Hoare annotation was computed. [2023-11-26 10:44:59,954 INFO L902 garLoopResultBuilder]: At program point L958(line 958) the Hoare annotation is: true [2023-11-26 10:44:59,954 INFO L899 garLoopResultBuilder]: For program point L958-1(line 958) no Hoare annotation was computed. [2023-11-26 10:44:59,955 INFO L899 garLoopResultBuilder]: For program point L977(lines 952 981) no Hoare annotation was computed. [2023-11-26 10:44:59,955 INFO L899 garLoopResultBuilder]: For program point L973(line 973) no Hoare annotation was computed. [2023-11-26 10:44:59,955 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 952 981) the Hoare annotation is: true [2023-11-26 10:44:59,955 INFO L899 garLoopResultBuilder]: For program point L966(lines 966 970) no Hoare annotation was computed. [2023-11-26 10:44:59,955 INFO L902 garLoopResultBuilder]: At program point L966-1(lines 966 970) the Hoare annotation is: true [2023-11-26 10:44:59,955 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 68) no Hoare annotation was computed. [2023-11-26 10:44:59,955 INFO L899 garLoopResultBuilder]: For program point L64-2(lines 60 71) no Hoare annotation was computed. [2023-11-26 10:44:59,955 INFO L899 garLoopResultBuilder]: For program point L568(lines 568 574) no Hoare annotation was computed. [2023-11-26 10:44:59,956 INFO L895 garLoopResultBuilder]: At program point L279(line 279) the Hoare annotation is: (let ((.cse1 (< |old(~pumpRunning~0)| 1)) (.cse3 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (< 2 |old(~waterLevel~0)|))) (and (or .cse0 (not (= |old(~waterLevel~0)| 2)) .cse1) (or (< |old(~switchedOnBeforeTS~0)| 1) .cse0 .cse1 .cse2) (or .cse3 .cse2 (not (= 0 ~systemActive~0))) (or .cse3 (and (= ~pumpRunning~0 0) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse0 .cse2))) [2023-11-26 10:44:59,956 INFO L899 garLoopResultBuilder]: For program point L279-1(lines 260 284) no Hoare annotation was computed. [2023-11-26 10:44:59,956 INFO L899 garLoopResultBuilder]: For program point L180(lines 180 186) no Hoare annotation was computed. [2023-11-26 10:44:59,956 INFO L899 garLoopResultBuilder]: For program point L531(line 531) no Hoare annotation was computed. [2023-11-26 10:44:59,956 INFO L899 garLoopResultBuilder]: For program point L180-2(lines 176 198) no Hoare annotation was computed. [2023-11-26 10:44:59,957 INFO L895 garLoopResultBuilder]: At program point L565(line 565) the Hoare annotation is: (let ((.cse3 (= ~pumpRunning~0 0))) (let ((.cse10 (not (= 0 ~systemActive~0))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse9 (and .cse3 (= |old(~waterLevel~0)| ~waterLevel~0))) (.cse7 (< 2 |old(~waterLevel~0)|)) (.cse1 (not (= 1 ~systemActive~0))) (.cse8 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse6 (< |old(~pumpRunning~0)| 1)) (.cse5 (<= 1 ~switchedOnBeforeTS~0))) (and (or .cse0 .cse1 .cse2) (let ((.cse4 (<= ~waterLevel~0 2))) (or (< |old(~switchedOnBeforeTS~0)| 1) .cse1 (and .cse3 .cse4 .cse5) .cse6 .cse7 (and .cse8 .cse4 .cse5))) (or .cse0 .cse9 .cse7 .cse10) (or .cse0 .cse2 .cse10) (or .cse0 .cse9 .cse1 .cse7) (let ((.cse11 (= ~waterLevel~0 1))) (or .cse1 (and .cse8 .cse11 .cse5) .cse2 .cse6 (and .cse3 .cse11 .cse5)))))) [2023-11-26 10:44:59,957 INFO L899 garLoopResultBuilder]: For program point L565-1(line 565) no Hoare annotation was computed. [2023-11-26 10:44:59,957 INFO L899 garLoopResultBuilder]: For program point L268(lines 268 276) no Hoare annotation was computed. [2023-11-26 10:44:59,957 INFO L899 garLoopResultBuilder]: For program point L264(lines 264 281) no Hoare annotation was computed. [2023-11-26 10:44:59,957 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 173 199) the Hoare annotation is: (let ((.cse3 (= ~switchedOnBeforeTS~0 |old(~switchedOnBeforeTS~0)|)) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse2 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse1 (< |old(~pumpRunning~0)| 1)) (.cse6 (and (= ~pumpRunning~0 0) .cse3 .cse4)) (.cse7 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (< 2 |old(~waterLevel~0)|))) (and (or (< |old(~switchedOnBeforeTS~0)| 1) .cse0 .cse1 (and .cse2 .cse3 .cse4) .cse5) (or .cse6 .cse7 .cse0 .cse5) (or .cse0 (and .cse2 (= 2 ~waterLevel~0) .cse3) (not (= |old(~waterLevel~0)| 2)) .cse1) (or .cse6 .cse7 .cse5 (not (= 0 ~systemActive~0)))))) [2023-11-26 10:44:59,958 INFO L895 garLoopResultBuilder]: At program point L550(line 550) the Hoare annotation is: (let ((.cse3 (= ~switchedOnBeforeTS~0 |old(~switchedOnBeforeTS~0)|)) (.cse4 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse2 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse1 (< |old(~pumpRunning~0)| 1)) (.cse6 (and (= ~pumpRunning~0 0) .cse3 .cse4)) (.cse7 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (< 2 |old(~waterLevel~0)|))) (and (or (< |old(~switchedOnBeforeTS~0)| 1) .cse0 .cse1 (and .cse2 .cse3 .cse4) .cse5) (or .cse6 .cse7 .cse0 .cse5) (or .cse0 (and .cse2 (= 2 ~waterLevel~0) .cse3) (not (= |old(~waterLevel~0)| 2)) .cse1) (or .cse6 .cse7 .cse5 (not (= 0 ~systemActive~0)))))) [2023-11-26 10:44:59,958 INFO L899 garLoopResultBuilder]: For program point L550-1(line 550) no Hoare annotation was computed. [2023-11-26 10:44:59,958 INFO L899 garLoopResultBuilder]: For program point L187-1(lines 187 193) no Hoare annotation was computed. [2023-11-26 10:44:59,958 INFO L899 garLoopResultBuilder]: For program point L567(lines 567 577) no Hoare annotation was computed. [2023-11-26 10:44:59,961 INFO L899 garLoopResultBuilder]: For program point L563(lines 563 580) no Hoare annotation was computed. [2023-11-26 10:44:59,962 INFO L895 garLoopResultBuilder]: At program point L274(line 274) the Hoare annotation is: (let ((.cse3 (< |old(~pumpRunning~0)| 1)) (.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (<= 1 ~switchedOnBeforeTS~0)) (.cse0 (not (= 1 ~systemActive~0))) (.cse5 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (< 2 |old(~waterLevel~0)|))) (and (or .cse0 (and .cse1 (= ~waterLevel~0 1) .cse2) (not (= |old(~waterLevel~0)| 2)) .cse3) (or (< |old(~switchedOnBeforeTS~0)| 1) .cse0 .cse3 .cse4 (and .cse1 (<= ~waterLevel~0 2) .cse2)) (or .cse5 .cse0 .cse4) (or .cse5 .cse4 (not (= 0 ~systemActive~0))))) [2023-11-26 10:44:59,962 INFO L899 garLoopResultBuilder]: For program point L563-1(lines 555 583) no Hoare annotation was computed. [2023-11-26 10:44:59,962 INFO L895 garLoopResultBuilder]: At program point L270(line 270) the Hoare annotation is: (let ((.cse3 (< |old(~pumpRunning~0)| 1)) (.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (<= 1 ~switchedOnBeforeTS~0)) (.cse0 (not (= 1 ~systemActive~0))) (.cse5 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (< 2 |old(~waterLevel~0)|))) (and (or .cse0 (and .cse1 (= ~waterLevel~0 1) .cse2) (not (= |old(~waterLevel~0)| 2)) .cse3) (or (< |old(~switchedOnBeforeTS~0)| 1) .cse0 .cse3 .cse4 (and .cse1 (<= ~waterLevel~0 2) .cse2)) (or .cse5 .cse0 .cse4) (or .cse5 .cse4 (not (= 0 ~systemActive~0))))) [2023-11-26 10:44:59,962 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 173 199) no Hoare annotation was computed. [2023-11-26 10:44:59,963 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 531) no Hoare annotation was computed. [2023-11-26 10:44:59,963 INFO L895 garLoopResultBuilder]: At program point L477(lines 430 479) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse4 (<= 1 ~pumpRunning~0)) (.cse3 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (<= ~waterLevel~0 2))) (or (and .cse0 .cse1 .cse2 (= 0 ~systemActive~0)) (and .cse0 .cse3 .cse1 .cse2) (and .cse4 (= 2 ~waterLevel~0) .cse3 .cse1) (and .cse4 .cse3 .cse1 .cse2 (<= 1 ~switchedOnBeforeTS~0)))) [2023-11-26 10:44:59,963 INFO L899 garLoopResultBuilder]: For program point L440(lines 440 446) no Hoare annotation was computed. [2023-11-26 10:44:59,963 INFO L899 garLoopResultBuilder]: For program point L440-1(lines 440 446) no Hoare annotation was computed. [2023-11-26 10:44:59,963 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 405) no Hoare annotation was computed. [2023-11-26 10:44:59,963 INFO L899 garLoopResultBuilder]: For program point L399-1(lines 399 405) no Hoare annotation was computed. [2023-11-26 10:44:59,963 INFO L899 garLoopResultBuilder]: For program point L483(lines 420 487) no Hoare annotation was computed. [2023-11-26 10:44:59,963 INFO L899 garLoopResultBuilder]: For program point L450(lines 450 456) no Hoare annotation was computed. [2023-11-26 10:44:59,964 INFO L899 garLoopResultBuilder]: For program point L450-1(lines 450 456) no Hoare annotation was computed. [2023-11-26 10:44:59,964 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-26 10:44:59,964 INFO L895 garLoopResultBuilder]: At program point L442(line 442) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse4 (<= 1 ~pumpRunning~0)) (.cse3 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (<= ~waterLevel~0 2))) (or (and .cse0 .cse1 .cse2 (= 0 ~systemActive~0)) (and .cse0 .cse3 .cse1 .cse2) (and .cse4 (= 2 ~waterLevel~0) .cse3 .cse1) (and .cse4 .cse3 .cse1 .cse2 (<= 1 ~switchedOnBeforeTS~0)))) [2023-11-26 10:44:59,964 INFO L895 garLoopResultBuilder]: At program point L401(line 401) the Hoare annotation is: (let ((.cse0 (<= 1 ~pumpRunning~0)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= 2 ~waterLevel~0) .cse1 .cse2) (and .cse0 .cse1 .cse2 (<= ~waterLevel~0 2) (<= 1 ~switchedOnBeforeTS~0)))) [2023-11-26 10:44:59,964 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-26 10:44:59,964 INFO L895 garLoopResultBuilder]: At program point L480(lines 429 481) the Hoare annotation is: false [2023-11-26 10:44:59,964 INFO L899 garLoopResultBuilder]: For program point L468(lines 468 474) no Hoare annotation was computed. [2023-11-26 10:44:59,965 INFO L895 garLoopResultBuilder]: At program point L468-2(lines 460 475) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse4 (<= 1 ~pumpRunning~0)) (.cse3 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (<= ~waterLevel~0 2))) (or (and .cse0 .cse1 .cse2 (= 0 ~systemActive~0)) (and .cse0 .cse3 .cse1 .cse2) (and .cse4 (= 2 ~waterLevel~0) .cse3 .cse1) (and .cse4 .cse3 .cse1 .cse2 (<= 1 ~switchedOnBeforeTS~0)))) [2023-11-26 10:44:59,965 INFO L899 garLoopResultBuilder]: For program point L431(lines 430 479) no Hoare annotation was computed. [2023-11-26 10:44:59,965 INFO L899 garLoopResultBuilder]: For program point L460(lines 460 475) no Hoare annotation was computed. [2023-11-26 10:44:59,965 INFO L899 garLoopResultBuilder]: For program point L1034(lines 1034 1041) no Hoare annotation was computed. [2023-11-26 10:44:59,965 INFO L899 garLoopResultBuilder]: For program point L1034-2(lines 1034 1041) no Hoare annotation was computed. [2023-11-26 10:44:59,965 INFO L895 garLoopResultBuilder]: At program point L452(line 452) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse4 (<= 1 ~pumpRunning~0)) (.cse3 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (<= ~waterLevel~0 2))) (or (and .cse0 .cse1 .cse2 (= 0 ~systemActive~0)) (and .cse0 .cse3 .cse1 .cse2) (and .cse4 (= 2 ~waterLevel~0) .cse3 .cse1) (and .cse4 .cse3 .cse1 .cse2 (<= 1 ~switchedOnBeforeTS~0)))) [2023-11-26 10:44:59,965 INFO L899 garLoopResultBuilder]: For program point L366(lines 366 370) no Hoare annotation was computed. [2023-11-26 10:44:59,965 INFO L899 garLoopResultBuilder]: For program point L141(lines 141 147) no Hoare annotation was computed. [2023-11-26 10:44:59,966 INFO L899 garLoopResultBuilder]: For program point L366-2(lines 366 370) no Hoare annotation was computed. [2023-11-26 10:44:59,967 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 208 232) the Hoare annotation is: (let ((.cse0 (< 2 ~waterLevel~0)) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse1) (or .cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 (< ~switchedOnBeforeTS~0 1) (< |old(~pumpRunning~0)| 1)))) [2023-11-26 10:44:59,967 INFO L899 garLoopResultBuilder]: For program point isHighWaterSensorDry_returnLabel#1(lines 137 150) no Hoare annotation was computed. [2023-11-26 10:44:59,967 INFO L895 garLoopResultBuilder]: At program point L222(line 222) the Hoare annotation is: (let ((.cse2 (< 2 ~waterLevel~0)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (not (= |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1| 0))) (or .cse2 .cse1 (< ~switchedOnBeforeTS~0 1) (< |old(~pumpRunning~0)| 1)) (or .cse2 .cse0 .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~0#1| 0))))) [2023-11-26 10:44:59,968 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 208 232) no Hoare annotation was computed. [2023-11-26 10:44:59,968 INFO L899 garLoopResultBuilder]: For program point L216(lines 216 224) no Hoare annotation was computed. [2023-11-26 10:44:59,968 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 229) no Hoare annotation was computed. [2023-11-26 10:44:59,968 INFO L895 garLoopResultBuilder]: At program point L227(line 227) the Hoare annotation is: (let ((.cse0 (< 2 ~waterLevel~0)) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 0)) .cse1) (or .cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 (< ~switchedOnBeforeTS~0 1) (< |old(~pumpRunning~0)| 1)))) [2023-11-26 10:44:59,968 INFO L899 garLoopResultBuilder]: For program point L227-1(lines 208 232) no Hoare annotation was computed. [2023-11-26 10:44:59,968 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 72 83) no Hoare annotation was computed. [2023-11-26 10:44:59,968 INFO L899 garLoopResultBuilder]: For program point L76-1(lines 72 83) no Hoare annotation was computed. [2023-11-26 10:44:59,969 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 72 83) the Hoare annotation is: (let ((.cse0 (< ~pumpRunning~0 1)) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= ~pumpRunning~0 0))) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse4 (< 2 |old(~waterLevel~0)|))) (and (or .cse0 (= 2 ~waterLevel~0) .cse1 (not (= |old(~waterLevel~0)| 2))) (or .cse2 .cse1 .cse3 .cse4) (or .cse0 .cse1 (< ~switchedOnBeforeTS~0 1) .cse3 .cse4) (or .cse2 .cse3 .cse4 (not (= 0 ~systemActive~0))))) [2023-11-26 10:44:59,969 INFO L895 garLoopResultBuilder]: At program point L248(line 248) the Hoare annotation is: (let ((.cse0 (< 2 ~waterLevel~0)) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 0)) .cse1) (or .cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 (< ~switchedOnBeforeTS~0 1) (< |old(~pumpRunning~0)| 1)))) [2023-11-26 10:44:59,969 INFO L895 garLoopResultBuilder]: At program point L244(line 244) the Hoare annotation is: (let ((.cse0 (< 2 ~waterLevel~0)) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 0)) .cse1) (or .cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 (< ~switchedOnBeforeTS~0 1) (< |old(~pumpRunning~0)| 1)))) [2023-11-26 10:44:59,969 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 250) no Hoare annotation was computed. [2023-11-26 10:44:59,969 INFO L899 garLoopResultBuilder]: For program point L238(lines 238 255) no Hoare annotation was computed. [2023-11-26 10:44:59,969 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 234 258) the Hoare annotation is: (let ((.cse0 (< 2 ~waterLevel~0)) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse1) (or .cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 (< ~switchedOnBeforeTS~0 1) (< |old(~pumpRunning~0)| 1)))) [2023-11-26 10:44:59,969 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 389) no Hoare annotation was computed. [2023-11-26 10:44:59,969 INFO L899 garLoopResultBuilder]: For program point L385-2(lines 385 389) no Hoare annotation was computed. [2023-11-26 10:44:59,970 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__lowWaterSensorEXIT(lines 234 258) no Hoare annotation was computed. [2023-11-26 10:44:59,970 INFO L895 garLoopResultBuilder]: At program point L253(line 253) the Hoare annotation is: (let ((.cse0 (< 2 ~waterLevel~0)) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse1) (or .cse0 .cse1 (< ~switchedOnBeforeTS~0 1) (< |old(~pumpRunning~0)| 1)))) [2023-11-26 10:44:59,970 INFO L899 garLoopResultBuilder]: For program point L253-1(lines 234 258) no Hoare annotation was computed. [2023-11-26 10:44:59,970 INFO L899 garLoopResultBuilder]: For program point isPumpRunningEXIT(lines 312 320) no Hoare annotation was computed. [2023-11-26 10:44:59,970 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 312 320) the Hoare annotation is: true [2023-11-26 10:44:59,974 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:59,976 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:44:59,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:44:59 BoogieIcfgContainer [2023-11-26 10:44:59,991 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:44:59,991 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:44:59,991 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:44:59,992 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:44:59,992 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:44:49" (3/4) ... [2023-11-26 10:44:59,994 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 10:44:59,997 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2023-11-26 10:44:59,997 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-11-26 10:44:59,998 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-11-26 10:44:59,998 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-11-26 10:44:59,998 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-11-26 10:44:59,998 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-11-26 10:44:59,998 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-11-26 10:44:59,998 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__lowWaterSensor [2023-11-26 10:44:59,998 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2023-11-26 10:45:00,015 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2023-11-26 10:45:00,015 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-26 10:45:00,016 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-26 10:45:00,017 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 10:45:00,018 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 10:45:00,180 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:45:00,181 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 10:45:00,181 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:45:00,182 INFO L158 Benchmark]: Toolchain (without parser) took 12539.73ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 112.0MB in the beginning and 155.8MB in the end (delta: -43.8MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2023-11-26 10:45:00,182 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:45:00,182 INFO L158 Benchmark]: CACSL2BoogieTranslator took 539.78ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 106.2MB in the end (delta: 5.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 10:45:00,183 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.45ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 103.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:45:00,183 INFO L158 Benchmark]: Boogie Preprocessor took 77.59ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 101.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:45:00,183 INFO L158 Benchmark]: RCFGBuilder took 712.05ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 76.8MB in the end (delta: 24.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-26 10:45:00,184 INFO L158 Benchmark]: TraceAbstraction took 10941.21ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 75.9MB in the beginning and 164.2MB in the end (delta: -88.3MB). Peak memory consumption was 87.0MB. Max. memory is 16.1GB. [2023-11-26 10:45:00,185 INFO L158 Benchmark]: Witness Printer took 189.34ms. Allocated memory is still 207.6MB. Free memory was 164.2MB in the beginning and 155.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 10:45:00,188 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 539.78ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 106.2MB in the end (delta: 5.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.45ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 103.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.59ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 101.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 712.05ms. Allocated memory is still 142.6MB. Free memory was 101.1MB in the beginning and 76.8MB in the end (delta: 24.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 10941.21ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 75.9MB in the beginning and 164.2MB in the end (delta: -88.3MB). Peak memory consumption was 87.0MB. Max. memory is 16.1GB. * Witness Printer took 189.34ms. Allocated memory is still 207.6MB. Free memory was 164.2MB in the beginning and 155.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] - GenericResultAtLocation [Line: 160]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [160] - GenericResultAtLocation [Line: 418]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [418] - GenericResultAtLocation [Line: 488]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [488] - GenericResultAtLocation [Line: 526]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [526] - GenericResultAtLocation [Line: 535]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [535] - GenericResultAtLocation [Line: 584]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [584] - GenericResultAtLocation [Line: 950]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [950] * 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: 531]: 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 10 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.9s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1683 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1636 mSDsluCounter, 3142 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2287 mSDsCounter, 571 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3195 IncrementalHoareTripleChecker+Invalid, 3766 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 571 mSolverCounterUnsat, 855 mSDtfsCounter, 3195 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 413 GetRequests, 293 SyntacticMatches, 4 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=822occurred in iteration=8, InterpolantAutomatonStates: 115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 144 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 28 LocationsWithAnnotation, 1331 PreInvPairs, 1464 NumberOfFragments, 1108 HoareAnnotationTreeSize, 1331 FomulaSimplifications, 2248 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 28 FomulaSimplificationsInter, 5105 FormulaSimplificationTreeSizeReductionInter, 2.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 522 NumberOfCodeBlocks, 522 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 597 ConstructedInterpolants, 0 QuantifiedInterpolants, 1133 SizeOfPredicates, 3 NumberOfNonLiveVariables, 329 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 104/131 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: 430]: Loop Invariant Derived loop invariant: (((((((pumpRunning == 0) && (splverifierCounter == 0)) && (waterLevel <= 2)) && (0 == systemActive)) || ((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel <= 2))) || ((((1 <= pumpRunning) && (2 == waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0))) || (((((1 <= pumpRunning) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel <= 2)) && (1 <= switchedOnBeforeTS))) - InvariantResult [Line: 962]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 429]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-11-26 10:45:00,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f6e7ee-6290-4d7a-8f3f-12f5abd5e240/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE