./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0552f986eafe304f33f56d4376c7c6a56e2d691e1035259c5c13e13b2a7157c1 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 22:06:39,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 22:06:39,990 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 22:06:39,994 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 22:06:39,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 22:06:40,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 22:06:40,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 22:06:40,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 22:06:40,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 22:06:40,016 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 22:06:40,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 22:06:40,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 22:06:40,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 22:06:40,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 22:06:40,018 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 22:06:40,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 22:06:40,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 22:06:40,019 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 22:06:40,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 22:06:40,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 22:06:40,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 22:06:40,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 22:06:40,021 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 22:06:40,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 22:06:40,021 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 22:06:40,021 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 22:06:40,022 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 22:06:40,022 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 22:06:40,022 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 22:06:40,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 22:06:40,023 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 22:06:40,023 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 22:06:40,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:06:40,024 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 22:06:40,024 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 22:06:40,024 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 22:06:40,025 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 22:06:40,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 22:06:40,025 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 22:06:40,026 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 22:06:40,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 22:06:40,026 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 22:06:40,027 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0552f986eafe304f33f56d4376c7c6a56e2d691e1035259c5c13e13b2a7157c1 [2024-11-19 22:06:40,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 22:06:40,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 22:06:40,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 22:06:40,293 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 22:06:40,294 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 22:06:40,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c [2024-11-19 22:06:41,747 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 22:06:41,982 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 22:06:41,983 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c [2024-11-19 22:06:41,995 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5e0af2ae/e356683f68504df987ade7f9cdfc8bb9/FLAGea64132ed [2024-11-19 22:06:42,320 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5e0af2ae/e356683f68504df987ade7f9cdfc8bb9 [2024-11-19 22:06:42,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 22:06:42,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 22:06:42,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 22:06:42,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 22:06:42,331 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 22:06:42,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:06:42" (1/1) ... [2024-11-19 22:06:42,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f521351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:06:42, skipping insertion in model container [2024-11-19 22:06:42,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:06:42" (1/1) ... [2024-11-19 22:06:42,382 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 22:06:42,643 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c[15143,15156] [2024-11-19 22:06:42,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:06:42,691 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 22:06:42,701 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] [2024-11-19 22:06:42,703 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [415] [2024-11-19 22:06:42,703 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [453] [2024-11-19 22:06:42,704 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [562] [2024-11-19 22:06:42,704 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [664] [2024-11-19 22:06:42,704 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [699] [2024-11-19 22:06:42,705 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [708] [2024-11-19 22:06:42,705 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [776] [2024-11-19 22:06:42,799 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product50.cil.c[15143,15156] [2024-11-19 22:06:42,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:06:42,876 INFO L204 MainTranslator]: Completed translation [2024-11-19 22:06:42,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:06:42 WrapperNode [2024-11-19 22:06:42,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 22:06:42,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 22:06:42,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 22:06:42,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 22:06:42,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:06:42" (1/1) ... [2024-11-19 22:06:42,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:06:42" (1/1) ... [2024-11-19 22:06:42,940 INFO L138 Inliner]: procedures = 56, calls = 100, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 213 [2024-11-19 22:06:42,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 22:06:42,941 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 22:06:42,941 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 22:06:42,941 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 22:06:42,951 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:06:42" (1/1) ... [2024-11-19 22:06:42,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:06:42" (1/1) ... [2024-11-19 22:06:42,954 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:06:42" (1/1) ... [2024-11-19 22:06:42,968 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]. [2024-11-19 22:06:42,969 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:06:42" (1/1) ... [2024-11-19 22:06:42,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:06:42" (1/1) ... [2024-11-19 22:06:42,974 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:06:42" (1/1) ... [2024-11-19 22:06:42,981 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:06:42" (1/1) ... [2024-11-19 22:06:42,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:06:42" (1/1) ... [2024-11-19 22:06:42,984 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:06:42" (1/1) ... [2024-11-19 22:06:42,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 22:06:42,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 22:06:42,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 22:06:42,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 22:06:42,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:06:42" (1/1) ... [2024-11-19 22:06:42,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:06:43,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:06:43,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 22:06:43,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 22:06:43,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 22:06:43,079 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-19 22:06:43,079 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-19 22:06:43,079 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-19 22:06:43,079 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-19 22:06:43,079 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-19 22:06:43,079 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-19 22:06:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2024-11-19 22:06:43,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2024-11-19 22:06:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-19 22:06:43,080 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-19 22:06:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-19 22:06:43,080 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-19 22:06:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 22:06:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-19 22:06:43,080 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-19 22:06:43,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 22:06:43,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 22:06:43,149 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 22:06:43,150 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 22:06:43,424 INFO L? ?]: Removed 49 outVars from TransFormulas that were not future-live. [2024-11-19 22:06:43,424 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 22:06:43,437 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 22:06:43,438 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 22:06:43,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:06:43 BoogieIcfgContainer [2024-11-19 22:06:43,438 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 22:06:43,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 22:06:43,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 22:06:43,446 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 22:06:43,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:06:42" (1/3) ... [2024-11-19 22:06:43,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d4bc34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:06:43, skipping insertion in model container [2024-11-19 22:06:43,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:06:42" (2/3) ... [2024-11-19 22:06:43,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d4bc34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:06:43, skipping insertion in model container [2024-11-19 22:06:43,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:06:43" (3/3) ... [2024-11-19 22:06:43,449 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product50.cil.c [2024-11-19 22:06:43,467 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 22:06:43,467 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 22:06:43,546 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 22:06:43,557 INFO L333 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, 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;@1739f9d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 22:06:43,557 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 22:06:43,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 69 states have (on average 1.391304347826087) internal successors, (96), 77 states have internal predecessors, (96), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 22:06:43,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-19 22:06:43,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:06:43,576 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:06:43,576 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:06:43,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:06:43,582 INFO L85 PathProgramCache]: Analyzing trace with hash 497933795, now seen corresponding path program 1 times [2024-11-19 22:06:43,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:06:43,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857270023] [2024-11-19 22:06:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:06:43,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:06:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:43,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-19 22:06:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:06:43,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:06:43,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857270023] [2024-11-19 22:06:43,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857270023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:06:43,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:06:43,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 22:06:43,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520630027] [2024-11-19 22:06:43,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:06:43,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 22:06:43,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:06:43,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 22:06:43,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 22:06:43,844 INFO L87 Difference]: Start difference. First operand has 89 states, 69 states have (on average 1.391304347826087) internal successors, (96), 77 states have internal predecessors, (96), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 22:06:43,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:06:43,874 INFO L93 Difference]: Finished difference Result 170 states and 231 transitions. [2024-11-19 22:06:43,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 22:06:43,877 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-19 22:06:43,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:06:43,886 INFO L225 Difference]: With dead ends: 170 [2024-11-19 22:06:43,887 INFO L226 Difference]: Without dead ends: 80 [2024-11-19 22:06:43,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 22:06:43,894 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:06:43,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:06:43,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-19 22:06:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-19 22:06:43,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.3225806451612903) internal successors, (82), 69 states have internal predecessors, (82), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-19 22:06:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 103 transitions. [2024-11-19 22:06:43,936 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 103 transitions. Word has length 25 [2024-11-19 22:06:43,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:06:43,937 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 103 transitions. [2024-11-19 22:06:43,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 22:06:43,938 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2024-11-19 22:06:43,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 22:06:43,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:06:43,941 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:06:43,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 22:06:43,942 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:06:43,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:06:43,943 INFO L85 PathProgramCache]: Analyzing trace with hash -470356708, now seen corresponding path program 1 times [2024-11-19 22:06:43,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:06:43,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17024200] [2024-11-19 22:06:43,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:06:43,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:06:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:44,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-19 22:06:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:44,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:06:44,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:06:44,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17024200] [2024-11-19 22:06:44,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17024200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:06:44,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:06:44,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:06:44,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840594723] [2024-11-19 22:06:44,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:06:44,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:06:44,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:06:44,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:06:44,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:06:44,091 INFO L87 Difference]: Start difference. First operand 80 states and 103 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 22:06:44,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:06:44,109 INFO L93 Difference]: Finished difference Result 125 states and 161 transitions. [2024-11-19 22:06:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:06:44,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-19 22:06:44,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:06:44,111 INFO L225 Difference]: With dead ends: 125 [2024-11-19 22:06:44,111 INFO L226 Difference]: Without dead ends: 71 [2024-11-19 22:06:44,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:06:44,113 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 13 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:06:44,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 163 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:06:44,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-19 22:06:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-19 22:06:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 63 states have internal predecessors, (75), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-19 22:06:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2024-11-19 22:06:44,123 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 26 [2024-11-19 22:06:44,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:06:44,123 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2024-11-19 22:06:44,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 22:06:44,124 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2024-11-19 22:06:44,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 22:06:44,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:06:44,125 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:06:44,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 22:06:44,126 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:06:44,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:06:44,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1793997224, now seen corresponding path program 1 times [2024-11-19 22:06:44,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:06:44,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095313609] [2024-11-19 22:06:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:06:44,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:06:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:44,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 22:06:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:44,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:06:44,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:06:44,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095313609] [2024-11-19 22:06:44,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095313609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:06:44,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:06:44,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 22:06:44,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138263445] [2024-11-19 22:06:44,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:06:44,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:06:44,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:06:44,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:06:44,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:06:44,289 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 22:06:44,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:06:44,344 INFO L93 Difference]: Finished difference Result 135 states and 176 transitions. [2024-11-19 22:06:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:06:44,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-11-19 22:06:44,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:06:44,346 INFO L225 Difference]: With dead ends: 135 [2024-11-19 22:06:44,347 INFO L226 Difference]: Without dead ends: 71 [2024-11-19 22:06:44,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:06:44,348 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 85 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:06:44,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 259 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:06:44,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-19 22:06:44,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-19 22:06:44,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 63 states have internal predecessors, (74), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-19 22:06:44,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 90 transitions. [2024-11-19 22:06:44,363 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 90 transitions. Word has length 31 [2024-11-19 22:06:44,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:06:44,363 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 90 transitions. [2024-11-19 22:06:44,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 22:06:44,363 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 90 transitions. [2024-11-19 22:06:44,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 22:06:44,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:06:44,365 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:06:44,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 22:06:44,365 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:06:44,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:06:44,366 INFO L85 PathProgramCache]: Analyzing trace with hash -668349169, now seen corresponding path program 1 times [2024-11-19 22:06:44,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:06:44,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457429898] [2024-11-19 22:06:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:06:44,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:06:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:44,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 22:06:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:44,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-19 22:06:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:44,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-19 22:06:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:06:44,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:06:44,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457429898] [2024-11-19 22:06:44,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457429898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:06:44,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:06:44,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 22:06:44,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028257462] [2024-11-19 22:06:44,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:06:44,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:06:44,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:06:44,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:06:44,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:06:44,493 INFO L87 Difference]: Start difference. First operand 71 states and 90 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 22:06:44,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:06:44,754 INFO L93 Difference]: Finished difference Result 213 states and 271 transitions. [2024-11-19 22:06:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:06:44,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 41 [2024-11-19 22:06:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:06:44,756 INFO L225 Difference]: With dead ends: 213 [2024-11-19 22:06:44,756 INFO L226 Difference]: Without dead ends: 149 [2024-11-19 22:06:44,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 22:06:44,759 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 173 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 22:06:44,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 293 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 22:06:44,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-19 22:06:44,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 143. [2024-11-19 22:06:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 112 states have (on average 1.2767857142857142) internal successors, (143), 119 states have internal predecessors, (143), 14 states have call successors, (14), 13 states have call predecessors, (14), 16 states have return successors, (19), 15 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-19 22:06:44,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 176 transitions. [2024-11-19 22:06:44,779 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 176 transitions. Word has length 41 [2024-11-19 22:06:44,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:06:44,780 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 176 transitions. [2024-11-19 22:06:44,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 22:06:44,780 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 176 transitions. [2024-11-19 22:06:44,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 22:06:44,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:06:44,781 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:06:44,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 22:06:44,782 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:06:44,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:06:44,783 INFO L85 PathProgramCache]: Analyzing trace with hash 103943489, now seen corresponding path program 1 times [2024-11-19 22:06:44,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:06:44,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129954278] [2024-11-19 22:06:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:06:44,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:06:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:44,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 22:06:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:44,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-19 22:06:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:06:44,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:06:44,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129954278] [2024-11-19 22:06:44,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129954278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:06:44,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:06:44,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:06:44,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991345035] [2024-11-19 22:06:44,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:06:44,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:06:44,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:06:44,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:06:44,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:06:44,963 INFO L87 Difference]: Start difference. First operand 143 states and 176 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 22:06:45,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:06:45,115 INFO L93 Difference]: Finished difference Result 283 states and 355 transitions. [2024-11-19 22:06:45,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:06:45,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-19 22:06:45,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:06:45,120 INFO L225 Difference]: With dead ends: 283 [2024-11-19 22:06:45,120 INFO L226 Difference]: Without dead ends: 147 [2024-11-19 22:06:45,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:06:45,126 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 51 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:06:45,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 437 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:06:45,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-19 22:06:45,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2024-11-19 22:06:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 114 states have (on average 1.2719298245614035) internal successors, (145), 121 states have internal predecessors, (145), 14 states have call successors, (14), 13 states have call predecessors, (14), 16 states have return successors, (19), 15 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-19 22:06:45,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 178 transitions. [2024-11-19 22:06:45,155 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 178 transitions. Word has length 45 [2024-11-19 22:06:45,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:06:45,156 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 178 transitions. [2024-11-19 22:06:45,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 22:06:45,156 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 178 transitions. [2024-11-19 22:06:45,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 22:06:45,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:06:45,158 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:06:45,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 22:06:45,158 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:06:45,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:06:45,162 INFO L85 PathProgramCache]: Analyzing trace with hash 921591939, now seen corresponding path program 1 times [2024-11-19 22:06:45,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:06:45,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005153689] [2024-11-19 22:06:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:06:45,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:06:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:45,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 22:06:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:45,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-19 22:06:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:06:45,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:06:45,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005153689] [2024-11-19 22:06:45,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005153689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:06:45,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:06:45,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:06:45,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881193136] [2024-11-19 22:06:45,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:06:45,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:06:45,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:06:45,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:06:45,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:06:45,257 INFO L87 Difference]: Start difference. First operand 145 states and 178 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 22:06:45,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:06:45,389 INFO L93 Difference]: Finished difference Result 288 states and 357 transitions. [2024-11-19 22:06:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 22:06:45,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-19 22:06:45,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:06:45,392 INFO L225 Difference]: With dead ends: 288 [2024-11-19 22:06:45,392 INFO L226 Difference]: Without dead ends: 150 [2024-11-19 22:06:45,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:06:45,394 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 52 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:06:45,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 364 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:06:45,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-19 22:06:45,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2024-11-19 22:06:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 117 states have (on average 1.264957264957265) internal successors, (148), 124 states have internal predecessors, (148), 14 states have call successors, (14), 13 states have call predecessors, (14), 16 states have return successors, (19), 15 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-19 22:06:45,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 181 transitions. [2024-11-19 22:06:45,419 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 181 transitions. Word has length 45 [2024-11-19 22:06:45,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:06:45,419 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 181 transitions. [2024-11-19 22:06:45,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 22:06:45,420 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 181 transitions. [2024-11-19 22:06:45,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 22:06:45,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:06:45,421 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:06:45,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 22:06:45,422 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:06:45,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:06:45,426 INFO L85 PathProgramCache]: Analyzing trace with hash 322798207, now seen corresponding path program 1 times [2024-11-19 22:06:45,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:06:45,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170782494] [2024-11-19 22:06:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:06:45,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:06:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:45,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 22:06:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:45,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-19 22:06:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:06:45,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:06:45,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170782494] [2024-11-19 22:06:45,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170782494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:06:45,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:06:45,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 22:06:45,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962446830] [2024-11-19 22:06:45,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:06:45,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:06:45,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:06:45,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:06:45,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:06:45,515 INFO L87 Difference]: Start difference. First operand 148 states and 181 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 22:06:45,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:06:45,718 INFO L93 Difference]: Finished difference Result 416 states and 530 transitions. [2024-11-19 22:06:45,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:06:45,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-19 22:06:45,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:06:45,723 INFO L225 Difference]: With dead ends: 416 [2024-11-19 22:06:45,723 INFO L226 Difference]: Without dead ends: 275 [2024-11-19 22:06:45,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:06:45,724 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 206 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:06:45,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 290 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:06:45,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-19 22:06:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 267. [2024-11-19 22:06:45,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 208 states have (on average 1.2548076923076923) internal successors, (261), 219 states have internal predecessors, (261), 29 states have call successors, (29), 28 states have call predecessors, (29), 29 states have return successors, (44), 29 states have call predecessors, (44), 29 states have call successors, (44) [2024-11-19 22:06:45,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 334 transitions. [2024-11-19 22:06:45,765 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 334 transitions. Word has length 45 [2024-11-19 22:06:45,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:06:45,766 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 334 transitions. [2024-11-19 22:06:45,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 22:06:45,767 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 334 transitions. [2024-11-19 22:06:45,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-19 22:06:45,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:06:45,772 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:06:45,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 22:06:45,772 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:06:45,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:06:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash -916701465, now seen corresponding path program 1 times [2024-11-19 22:06:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:06:45,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027432114] [2024-11-19 22:06:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:06:45,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:06:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:45,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 22:06:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:45,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 22:06:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:45,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-19 22:06:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:06:45,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:06:45,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027432114] [2024-11-19 22:06:45,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027432114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:06:45,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:06:45,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:06:45,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649848858] [2024-11-19 22:06:45,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:06:45,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:06:45,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:06:45,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:06:45,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:06:45,912 INFO L87 Difference]: Start difference. First operand 267 states and 334 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 22:06:46,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:06:46,090 INFO L93 Difference]: Finished difference Result 527 states and 660 transitions. [2024-11-19 22:06:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:06:46,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2024-11-19 22:06:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:06:46,093 INFO L225 Difference]: With dead ends: 527 [2024-11-19 22:06:46,097 INFO L226 Difference]: Without dead ends: 267 [2024-11-19 22:06:46,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:06:46,099 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 105 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:06:46,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 311 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:06:46,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-19 22:06:46,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2024-11-19 22:06:46,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 206 states have (on average 1.2475728155339805) internal successors, (257), 217 states have internal predecessors, (257), 29 states have call successors, (29), 28 states have call predecessors, (29), 29 states have return successors, (44), 29 states have call predecessors, (44), 29 states have call successors, (44) [2024-11-19 22:06:46,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 330 transitions. [2024-11-19 22:06:46,132 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 330 transitions. Word has length 47 [2024-11-19 22:06:46,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:06:46,132 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 330 transitions. [2024-11-19 22:06:46,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 22:06:46,134 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 330 transitions. [2024-11-19 22:06:46,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-19 22:06:46,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:06:46,135 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:06:46,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 22:06:46,135 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:06:46,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:06:46,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1637594841, now seen corresponding path program 1 times [2024-11-19 22:06:46,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:06:46,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617767416] [2024-11-19 22:06:46,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:06:46,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:06:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:46,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:06:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:46,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 22:06:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:46,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-19 22:06:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:06:46,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:06:46,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617767416] [2024-11-19 22:06:46,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617767416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:06:46,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:06:46,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 22:06:46,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739648705] [2024-11-19 22:06:46,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:06:46,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 22:06:46,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:06:46,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 22:06:46,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:06:46,226 INFO L87 Difference]: Start difference. First operand 265 states and 330 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 22:06:46,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:06:46,592 INFO L93 Difference]: Finished difference Result 516 states and 647 transitions. [2024-11-19 22:06:46,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 22:06:46,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2024-11-19 22:06:46,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:06:46,595 INFO L225 Difference]: With dead ends: 516 [2024-11-19 22:06:46,595 INFO L226 Difference]: Without dead ends: 305 [2024-11-19 22:06:46,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-11-19 22:06:46,596 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 198 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 22:06:46,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 476 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 22:06:46,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-19 22:06:46,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 301. [2024-11-19 22:06:46,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 236 states have (on average 1.228813559322034) internal successors, (290), 250 states have internal predecessors, (290), 32 states have call successors, (32), 28 states have call predecessors, (32), 32 states have return successors, (44), 32 states have call predecessors, (44), 32 states have call successors, (44) [2024-11-19 22:06:46,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 366 transitions. [2024-11-19 22:06:46,630 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 366 transitions. Word has length 49 [2024-11-19 22:06:46,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:06:46,631 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 366 transitions. [2024-11-19 22:06:46,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 22:06:46,631 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 366 transitions. [2024-11-19 22:06:46,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 22:06:46,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:06:46,632 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:06:46,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 22:06:46,632 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:06:46,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:06:46,633 INFO L85 PathProgramCache]: Analyzing trace with hash -32680003, now seen corresponding path program 1 times [2024-11-19 22:06:46,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:06:46,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355182011] [2024-11-19 22:06:46,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:06:46,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:06:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:46,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:06:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:46,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 22:06:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:46,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 22:06:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:46,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-19 22:06:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:06:46,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:06:46,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355182011] [2024-11-19 22:06:46,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355182011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:06:46,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:06:46,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 22:06:46,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999117232] [2024-11-19 22:06:46,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:06:46,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 22:06:46,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:06:46,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 22:06:46,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:06:46,769 INFO L87 Difference]: Start difference. First operand 301 states and 366 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 22:06:47,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:06:47,035 INFO L93 Difference]: Finished difference Result 550 states and 676 transitions. [2024-11-19 22:06:47,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 22:06:47,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (5), 3 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 51 [2024-11-19 22:06:47,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:06:47,039 INFO L225 Difference]: With dead ends: 550 [2024-11-19 22:06:47,040 INFO L226 Difference]: Without dead ends: 305 [2024-11-19 22:06:47,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-19 22:06:47,042 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 125 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 22:06:47,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 452 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 22:06:47,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-19 22:06:47,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 301. [2024-11-19 22:06:47,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 236 states have (on average 1.2245762711864407) internal successors, (289), 250 states have internal predecessors, (289), 32 states have call successors, (32), 28 states have call predecessors, (32), 32 states have return successors, (44), 32 states have call predecessors, (44), 32 states have call successors, (44) [2024-11-19 22:06:47,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 365 transitions. [2024-11-19 22:06:47,071 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 365 transitions. Word has length 51 [2024-11-19 22:06:47,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:06:47,071 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 365 transitions. [2024-11-19 22:06:47,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 22:06:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 365 transitions. [2024-11-19 22:06:47,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 22:06:47,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:06:47,075 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:06:47,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 22:06:47,076 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:06:47,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:06:47,076 INFO L85 PathProgramCache]: Analyzing trace with hash -251534721, now seen corresponding path program 1 times [2024-11-19 22:06:47,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:06:47,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405844302] [2024-11-19 22:06:47,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:06:47,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:06:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:47,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:06:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:47,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-19 22:06:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:47,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-19 22:06:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:47,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-19 22:06:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:06:47,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:06:47,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405844302] [2024-11-19 22:06:47,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405844302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:06:47,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:06:47,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 22:06:47,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222714154] [2024-11-19 22:06:47,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:06:47,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 22:06:47,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:06:47,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 22:06:47,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:06:47,153 INFO L87 Difference]: Start difference. First operand 301 states and 365 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 22:06:47,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:06:47,324 INFO L93 Difference]: Finished difference Result 521 states and 638 transitions. [2024-11-19 22:06:47,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:06:47,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (5), 3 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 51 [2024-11-19 22:06:47,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:06:47,326 INFO L225 Difference]: With dead ends: 521 [2024-11-19 22:06:47,327 INFO L226 Difference]: Without dead ends: 276 [2024-11-19 22:06:47,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-19 22:06:47,328 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 120 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:06:47,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 299 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:06:47,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-19 22:06:47,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 272. [2024-11-19 22:06:47,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 214 states have (on average 1.2242990654205608) internal successors, (262), 227 states have internal predecessors, (262), 29 states have call successors, (29), 25 states have call predecessors, (29), 28 states have return successors, (37), 28 states have call predecessors, (37), 29 states have call successors, (37) [2024-11-19 22:06:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 328 transitions. [2024-11-19 22:06:47,352 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 328 transitions. Word has length 51 [2024-11-19 22:06:47,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:06:47,353 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 328 transitions. [2024-11-19 22:06:47,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 22:06:47,353 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 328 transitions. [2024-11-19 22:06:47,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-19 22:06:47,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:06:47,354 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 22:06:47,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 22:06:47,355 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:06:47,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:06:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash -614822540, now seen corresponding path program 1 times [2024-11-19 22:06:47,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:06:47,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864296220] [2024-11-19 22:06:47,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:06:47,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:06:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:47,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-19 22:06:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:47,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-19 22:06:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:47,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 22:06:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:47,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-19 22:06:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:47,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-19 22:06:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 22:06:47,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:06:47,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864296220] [2024-11-19 22:06:47,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864296220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:06:47,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700290071] [2024-11-19 22:06:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:06:47,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:06:47,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:06:47,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 22:06:47,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 22:06:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:06:47,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 22:06:47,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:06:47,860 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 22:06:47,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:06:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 22:06:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700290071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:06:48,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:06:48,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 17 [2024-11-19 22:06:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969362710] [2024-11-19 22:06:48,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:06:48,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 22:06:48,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:06:48,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 22:06:48,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-19 22:06:48,176 INFO L87 Difference]: Start difference. First operand 272 states and 328 transitions. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 13 states have internal predecessors, (121), 6 states have call successors, (17), 9 states have call predecessors, (17), 6 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-19 22:06:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:06:48,737 INFO L93 Difference]: Finished difference Result 511 states and 648 transitions. [2024-11-19 22:06:48,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 22:06:48,738 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 13 states have internal predecessors, (121), 6 states have call successors, (17), 9 states have call predecessors, (17), 6 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 81 [2024-11-19 22:06:48,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:06:48,738 INFO L225 Difference]: With dead ends: 511 [2024-11-19 22:06:48,739 INFO L226 Difference]: Without dead ends: 0 [2024-11-19 22:06:48,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 159 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=369, Invalid=1037, Unknown=0, NotChecked=0, Total=1406 [2024-11-19 22:06:48,741 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 326 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 22:06:48,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 432 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 22:06:48,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-19 22:06:48,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-19 22:06:48,742 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) [2024-11-19 22:06:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 22:06:48,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2024-11-19 22:06:48,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:06:48,743 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 22:06:48,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 13 states have internal predecessors, (121), 6 states have call successors, (17), 9 states have call predecessors, (17), 6 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-19 22:06:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-19 22:06:48,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-19 22:06:48,746 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-19 22:06:48,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 22:06:48,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 22:06:48,953 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:06:48,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-19 22:06:50,619 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 22:06:50,650 WARN L156 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (let ((.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (and (= ~pumpRunning~0 0) .cse1)) (or (not .cse2) (and .cse1 (= ~pumpRunning~0 1))) (let ((.cse3 (<= |old(~waterLevel~0)| 2)) (.cse4 (not (= 0 ~systemActive~0)))) (or (and .cse2 .cse3 .cse4) (and .cse0 .cse3 .cse4))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int) (|old(~waterLevel~0)| Int)) (let ((.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (= |old(~pumpRunning~0)| 1)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (and (= ~pumpRunning~0 0) .cse1)) (or (not .cse2) (and .cse1 (= ~pumpRunning~0 1))) (let ((.cse3 (<= |old(~waterLevel~0)| 2)) (.cse4 (not (= 0 ~systemActive~0)))) (or (and .cse2 .cse3 .cse4) (and .cse0 .cse3 .cse4)))))) [2024-11-19 22:06:50,657 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-19 22:06:50,664 WARN L156 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= |old(~pumpRunning~0)| 1))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (not .cse1) (= ~pumpRunning~0 1)) (let ((.cse2 (not (= 0 ~systemActive~0)))) (or (and .cse0 (<= ~waterLevel~0 2) .cse2) (and (<= ~waterLevel~0 1) .cse1 .cse2))))) Eliminated clause: (exists ((|old(~pumpRunning~0)| Int)) (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= |old(~pumpRunning~0)| 1))) (and (or (not .cse0) (= ~pumpRunning~0 0)) (or (not .cse1) (= ~pumpRunning~0 1)) (let ((.cse2 (not (= 0 ~systemActive~0)))) (or (and .cse0 (<= ~waterLevel~0 2) .cse2) (and (<= ~waterLevel~0 1) .cse1 .cse2)))))) [2024-11-19 22:06:50,668 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-19 22:06:50,672 WARN L156 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (and (= |old(~waterLevel~0)| ~waterLevel~0) (let ((.cse0 (not (= 0 ~systemActive~0)))) (or (and (= ~pumpRunning~0 0) (<= |old(~waterLevel~0)| 1) .cse0) (and (<= |old(~waterLevel~0)| 2) .cse0 (= ~pumpRunning~0 1))))) Eliminated clause: (let ((.cse0 (not (= 0 ~systemActive~0)))) (or (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1) .cse0) (and (<= ~waterLevel~0 2) .cse0 (= ~pumpRunning~0 1)))) [2024-11-19 22:06:50,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:06:50 BoogieIcfgContainer [2024-11-19 22:06:50,679 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 22:06:50,679 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 22:06:50,679 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 22:06:50,680 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 22:06:50,680 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:06:43" (3/4) ... [2024-11-19 22:06:50,683 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 22:06:50,686 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-19 22:06:50,687 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-19 22:06:50,687 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-19 22:06:50,687 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-19 22:06:50,687 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2024-11-19 22:06:50,687 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-19 22:06:50,687 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-19 22:06:50,697 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-11-19 22:06:50,698 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-19 22:06:50,699 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-19 22:06:50,699 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 22:06:50,699 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 22:06:50,827 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 22:06:50,827 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 22:06:50,828 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 22:06:50,828 INFO L158 Benchmark]: Toolchain (without parser) took 8504.50ms. Allocated memory was 190.8MB in the beginning and 237.0MB in the end (delta: 46.1MB). Free memory was 122.1MB in the beginning and 200.5MB in the end (delta: -78.4MB). Peak memory consumption was 100.9MB. Max. memory is 16.1GB. [2024-11-19 22:06:50,829 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 80.3MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 22:06:50,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 552.46ms. Allocated memory is still 190.8MB. Free memory was 122.1MB in the beginning and 159.7MB in the end (delta: -37.6MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2024-11-19 22:06:50,829 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.66ms. Allocated memory is still 190.8MB. Free memory was 159.7MB in the beginning and 157.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 22:06:50,829 INFO L158 Benchmark]: Boogie Preprocessor took 49.94ms. Allocated memory is still 190.8MB. Free memory was 157.6MB in the beginning and 154.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 22:06:50,830 INFO L158 Benchmark]: RCFGBuilder took 446.95ms. Allocated memory is still 190.8MB. Free memory was 154.5MB in the beginning and 135.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-19 22:06:50,830 INFO L158 Benchmark]: TraceAbstraction took 7238.45ms. Allocated memory was 190.8MB in the beginning and 237.0MB in the end (delta: 46.1MB). Free memory was 135.6MB in the beginning and 73.8MB in the end (delta: 61.8MB). Peak memory consumption was 114.2MB. Max. memory is 16.1GB. [2024-11-19 22:06:50,830 INFO L158 Benchmark]: Witness Printer took 148.33ms. Allocated memory is still 237.0MB. Free memory was 73.8MB in the beginning and 200.5MB in the end (delta: -126.7MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2024-11-19 22:06:50,832 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 80.3MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 552.46ms. Allocated memory is still 190.8MB. Free memory was 122.1MB in the beginning and 159.7MB in the end (delta: -37.6MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.66ms. Allocated memory is still 190.8MB. Free memory was 159.7MB in the beginning and 157.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.94ms. Allocated memory is still 190.8MB. Free memory was 157.6MB in the beginning and 154.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 446.95ms. Allocated memory is still 190.8MB. Free memory was 154.5MB in the beginning and 135.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 7238.45ms. Allocated memory was 190.8MB in the beginning and 237.0MB in the end (delta: 46.1MB). Free memory was 135.6MB in the beginning and 73.8MB in the end (delta: 61.8MB). Peak memory consumption was 114.2MB. Max. memory is 16.1GB. * Witness Printer took 148.33ms. Allocated memory is still 237.0MB. Free memory was 73.8MB in the beginning and 200.5MB in the end (delta: -126.7MB). Peak memory consumption was 5.4MB. 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,"libacc.i","") [49] - GenericResultAtLocation [Line: 415]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [415] - GenericResultAtLocation [Line: 453]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [453] - GenericResultAtLocation [Line: 562]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [562] - GenericResultAtLocation [Line: 664]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [664] - GenericResultAtLocation [Line: 699]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [699] - GenericResultAtLocation [Line: 708]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [708] - GenericResultAtLocation [Line: 776]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [776] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 704]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1485 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1454 mSDsluCounter, 3888 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2819 mSDsCounter, 305 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1835 IncrementalHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 305 mSolverCounterUnsat, 1069 mSDtfsCounter, 1835 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 241 SyntacticMatches, 7 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=301occurred in iteration=9, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 32 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 618 NumberOfCodeBlocks, 618 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 685 ConstructedInterpolants, 0 QuantifiedInterpolants, 1266 SizeOfPredicates, 2 NumberOfNonLiveVariables, 284 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 46/63 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: 720]: Loop Invariant Derived loop invariant: ((((((waterLevel <= 1) && (splverifierCounter == 0)) && (0 != systemActive)) && (pumpRunning == 1)) || ((((pumpRunning == 0) && (waterLevel <= 1)) && (splverifierCounter == 0)) && (0 != systemActive))) || ((((2 == waterLevel) && (splverifierCounter == 0)) && (0 != systemActive)) && (pumpRunning == 1))) - InvariantResult [Line: 719]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 575]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 806]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: ((((pumpRunning == 0) && (waterLevel <= 1)) && (0 != systemActive)) || (((waterLevel <= 1) && (0 != systemActive)) && (pumpRunning == 1))) Ensures: (((((pumpRunning == 0) && (waterLevel <= 1)) && (0 != systemActive)) || (((waterLevel <= 1) && (0 != systemActive)) && (pumpRunning == 1))) && ((((((head == \old(head)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 486]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: ((((pumpRunning == 0) && (waterLevel <= 2)) && (0 != systemActive)) || (((waterLevel <= 2) && (0 != systemActive)) && (pumpRunning == 1))) Ensures: (((((pumpRunning == 0) && (waterLevel <= 2)) && (0 != systemActive)) || (((waterLevel <= 2) && (0 != systemActive)) && (pumpRunning == 1))) && (((((head == \old(head)) && (waterLevel == \old(waterLevel))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 782]: Procedure Contract for timeShift Derived contract for procedure timeShift. Ensures: (((((((\old(pumpRunning) == 1) && (\old(waterLevel) <= 2)) && (0 != systemActive)) || ((\old(pumpRunning) == 0) && (0 != systemActive))) && (((((waterLevel <= 1) && (waterLevel <= \old(waterLevel))) && (pumpRunning == 1)) || (\old(pumpRunning) != 1)) || (((pumpRunning == 0) && (waterLevel <= 1)) && (waterLevel <= \old(waterLevel))))) && (((((pumpRunning == 0) && (waterLevel <= 1)) && (\old(waterLevel) == waterLevel)) || (\old(pumpRunning) != 0)) || (((2 == waterLevel) && (\old(waterLevel) == 2)) && (pumpRunning == 1)))) && ((((head == \old(head)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 565]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((head == \old(head)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 498]: Procedure Contract for isMethaneLevelCritical Derived contract for procedure isMethaneLevelCritical. Requires: ((((pumpRunning == 0) && (waterLevel <= 1)) && (0 != systemActive)) || (((waterLevel <= 2) && (0 != systemActive)) && (pumpRunning == 1))) Ensures: (((((pumpRunning == 0) && (waterLevel <= 1)) && (0 != systemActive)) || (((waterLevel <= 2) && (0 != systemActive)) && (pumpRunning == 1))) && ((((((head == \old(head)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 814]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Ensures: (((((((waterLevel <= 1) && (\old(pumpRunning) == 1)) && (0 != systemActive)) || ((\old(pumpRunning) == 0) && (0 != systemActive))) && (((\old(pumpRunning) != 0) || ((pumpRunning == 0) && (waterLevel <= 1))) || ((2 == waterLevel) && (pumpRunning == 1)))) && ((\old(pumpRunning) != 1) || (pumpRunning == 1))) && (((((head == \old(head)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (systemActive == \old(systemActive)))) - ProcedureContractResult [Line: 474]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: ((((pumpRunning == 0) && (waterLevel <= 1)) && (0 != systemActive)) || (((waterLevel <= 2) && (0 != systemActive)) && (pumpRunning == 1))) Ensures: (((((((pumpRunning != 0) || (2 == waterLevel)) || (\old(waterLevel) != 1)) && ((\old(waterLevel) < 2) || (\old(waterLevel) == waterLevel))) && (waterLevel <= ((long long) \old(waterLevel) + 1))) && ((((pumpRunning == 0) && (\old(waterLevel) <= 1)) && (0 != systemActive)) || (((\old(waterLevel) <= 2) && (0 != systemActive)) && (pumpRunning == 1)))) && (((((head == \old(head)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (cleanupTimeShifts == \old(cleanupTimeShifts))) && (pumpRunning == \old(pumpRunning))) && (systemActive == \old(systemActive)))) RESULT: Ultimate proved your program to be correct! [2024-11-19 22:06:50,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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