./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product61.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product61.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd --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 a5340faf3ec1f0e0bc66d280fc3b45c510e704ff1d108d74101ee8606e665888 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:13:37,421 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:13:37,532 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:13:37,546 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:13:37,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:13:37,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:13:37,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:13:37,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:13:37,598 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:13:37,598 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:13:37,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:13:37,599 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:13:37,599 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:13:37,599 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:13:37,600 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:13:37,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:13:37,600 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:13:37,600 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:13:37,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:13:37,600 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:13:37,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:13:37,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:13:37,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:13:37,601 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:13:37,604 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:13:37,604 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:13:37,604 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:13:37,604 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:13:37,605 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:13:37,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:13:37,605 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:13:37,605 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:13:37,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:13:37,605 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:13:37,606 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:13:37,606 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:13:37,606 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:13:37,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:13:37,606 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:13:37,606 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:13:37,606 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:13:37,606 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:13:37,607 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd 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 -> a5340faf3ec1f0e0bc66d280fc3b45c510e704ff1d108d74101ee8606e665888 [2024-11-13 13:13:38,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:13:38,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:13:38,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:13:38,028 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:13:38,028 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:13:38,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/product-lines/minepump_spec4_product61.cil.c Unable to find full path for "g++" [2024-11-13 13:13:40,260 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:13:40,753 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:13:40,754 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/sv-benchmarks/c/product-lines/minepump_spec4_product61.cil.c [2024-11-13 13:13:40,769 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/data/799ab32d5/8f4becf118154fbb90c251edbae2ed22/FLAGf7bc58628 [2024-11-13 13:13:40,789 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/data/799ab32d5/8f4becf118154fbb90c251edbae2ed22 [2024-11-13 13:13:40,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:13:40,793 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:13:40,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:13:40,796 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:13:40,802 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:13:40,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:13:40" (1/1) ... [2024-11-13 13:13:40,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bef5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:40, skipping insertion in model container [2024-11-13 13:13:40,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:13:40" (1/1) ... [2024-11-13 13:13:40,864 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:13:41,086 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/sv-benchmarks/c/product-lines/minepump_spec4_product61.cil.c[1605,1618] [2024-11-13 13:13:41,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:13:41,351 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:13:41,363 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2024-11-13 13:13:41,364 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [58] [2024-11-13 13:13:41,365 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [96] [2024-11-13 13:13:41,365 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [347] [2024-11-13 13:13:41,365 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [415] [2024-11-13 13:13:41,365 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [519] [2024-11-13 13:13:41,365 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [545] [2024-11-13 13:13:41,365 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [911] [2024-11-13 13:13:41,373 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/sv-benchmarks/c/product-lines/minepump_spec4_product61.cil.c[1605,1618] [2024-11-13 13:13:41,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:13:41,499 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:13:41,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:41 WrapperNode [2024-11-13 13:13:41,500 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:13:41,501 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:13:41,501 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:13:41,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:13:41,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:41" (1/1) ... [2024-11-13 13:13:41,539 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:41" (1/1) ... [2024-11-13 13:13:41,581 INFO L138 Inliner]: procedures = 57, calls = 104, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 235 [2024-11-13 13:13:41,581 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:13:41,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:13:41,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:13:41,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:13:41,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:41" (1/1) ... [2024-11-13 13:13:41,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:41" (1/1) ... [2024-11-13 13:13:41,600 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:41" (1/1) ... [2024-11-13 13:13:41,616 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]. [2024-11-13 13:13:41,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:41" (1/1) ... [2024-11-13 13:13:41,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:41" (1/1) ... [2024-11-13 13:13:41,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:41" (1/1) ... [2024-11-13 13:13:41,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:41" (1/1) ... [2024-11-13 13:13:41,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:41" (1/1) ... [2024-11-13 13:13:41,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:41" (1/1) ... [2024-11-13 13:13:41,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:13:41,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:13:41,642 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:13:41,642 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:13:41,643 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:41" (1/1) ... [2024-11-13 13:13:41,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:13:41,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:41,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:13:41,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:13:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:13:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-13 13:13:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-13 13:13:41,736 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-13 13:13:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-13 13:13:41,736 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-13 13:13:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-13 13:13:41,736 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-13 13:13:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-13 13:13:41,737 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-13 13:13:41,737 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-13 13:13:41,737 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2024-11-13 13:13:41,737 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2024-11-13 13:13:41,738 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2024-11-13 13:13:41,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2024-11-13 13:13:41,738 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-13 13:13:41,738 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-13 13:13:41,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:13:41,739 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-13 13:13:41,740 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-13 13:13:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:13:41,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:13:41,843 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:13:41,846 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:13:42,297 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2024-11-13 13:13:42,297 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:13:42,312 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:13:42,313 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:13:42,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:13:42 BoogieIcfgContainer [2024-11-13 13:13:42,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:13:42,317 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:13:42,317 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:13:42,322 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:13:42,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:13:40" (1/3) ... [2024-11-13 13:13:42,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbebcd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:13:42, skipping insertion in model container [2024-11-13 13:13:42,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:41" (2/3) ... [2024-11-13 13:13:42,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbebcd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:13:42, skipping insertion in model container [2024-11-13 13:13:42,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:13:42" (3/3) ... [2024-11-13 13:13:42,326 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product61.cil.c [2024-11-13 13:13:42,345 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:13:42,347 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG minepump_spec4_product61.cil.c that has 10 procedures, 103 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 13:13:42,439 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:13:42,459 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;@75ffcdd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:13:42,461 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:13:42,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 76 states have (on average 1.381578947368421) internal successors, (105), 86 states have internal predecessors, (105), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 13:13:42,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 13:13:42,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:42,480 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:42,480 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:42,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:42,485 INFO L85 PathProgramCache]: Analyzing trace with hash -250246345, now seen corresponding path program 1 times [2024-11-13 13:13:42,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:42,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237480523] [2024-11-13 13:13:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:42,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:42,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:42,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237480523] [2024-11-13 13:13:42,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237480523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:42,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:42,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:13:42,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807443394] [2024-11-13 13:13:42,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:42,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:13:42,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:42,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:13:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:13:42,751 INFO L87 Difference]: Start difference. First operand has 103 states, 76 states have (on average 1.381578947368421) internal successors, (105), 86 states have internal predecessors, (105), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:42,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:42,787 INFO L93 Difference]: Finished difference Result 198 states and 269 transitions. [2024-11-13 13:13:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:13:42,789 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-13 13:13:42,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:42,799 INFO L225 Difference]: With dead ends: 198 [2024-11-13 13:13:42,800 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 13:13:42,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:13:42,808 INFO L432 NwaCegarLoop]: 131 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, 131 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 [2024-11-13 13:13:42,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:13:42,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 13:13:42,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-13 13:13:42,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.318840579710145) internal successors, (91), 78 states have internal predecessors, (91), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-13 13:13:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2024-11-13 13:13:42,855 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 19 [2024-11-13 13:13:42,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:42,856 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2024-11-13 13:13:42,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:42,857 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2024-11-13 13:13:42,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 13:13:42,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:42,859 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] [2024-11-13 13:13:42,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:13:42,859 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:42,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:42,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1249525353, now seen corresponding path program 1 times [2024-11-13 13:13:42,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:42,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100996750] [2024-11-13 13:13:42,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:42,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:43,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:43,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100996750] [2024-11-13 13:13:43,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100996750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:43,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:43,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:13:43,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466347649] [2024-11-13 13:13:43,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:43,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:13:43,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:43,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:13:43,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:13:43,026 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:43,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:43,070 INFO L93 Difference]: Finished difference Result 154 states and 200 transitions. [2024-11-13 13:13:43,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:13:43,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 13:13:43,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:43,074 INFO L225 Difference]: With dead ends: 154 [2024-11-13 13:13:43,074 INFO L226 Difference]: Without dead ends: 85 [2024-11-13 13:13:43,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:13:43,080 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 202 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 [2024-11-13 13:13:43,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:13:43,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-13 13:13:43,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-13 13:13:43,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 72 states have internal predecessors, (84), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 13:13:43,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2024-11-13 13:13:43,110 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 20 [2024-11-13 13:13:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:43,111 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2024-11-13 13:13:43,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:43,111 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2024-11-13 13:13:43,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 13:13:43,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:43,116 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] [2024-11-13 13:13:43,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:13:43,116 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:43,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:43,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1573018675, now seen corresponding path program 1 times [2024-11-13 13:13:43,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:43,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854883063] [2024-11-13 13:13:43,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:43,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:43,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:43,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:43,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854883063] [2024-11-13 13:13:43,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854883063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:43,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:43,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:13:43,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608206328] [2024-11-13 13:13:43,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:43,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:13:43,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:43,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:13:43,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:13:43,344 INFO L87 Difference]: Start difference. First operand 85 states and 110 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:43,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:43,368 INFO L93 Difference]: Finished difference Result 163 states and 214 transitions. [2024-11-13 13:13:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:13:43,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-13 13:13:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:43,370 INFO L225 Difference]: With dead ends: 163 [2024-11-13 13:13:43,371 INFO L226 Difference]: Without dead ends: 85 [2024-11-13 13:13:43,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:13:43,373 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 92 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 108 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 [2024-11-13 13:13:43,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 108 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:13:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-13 13:13:43,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-13 13:13:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.3174603174603174) internal successors, (83), 72 states have internal predecessors, (83), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 13:13:43,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2024-11-13 13:13:43,390 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 24 [2024-11-13 13:13:43,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:43,390 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2024-11-13 13:13:43,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:43,391 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2024-11-13 13:13:43,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 13:13:43,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:43,393 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] [2024-11-13 13:13:43,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:13:43,393 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:43,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:43,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1115070652, now seen corresponding path program 1 times [2024-11-13 13:13:43,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:43,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997565469] [2024-11-13 13:13:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:43,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:43,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 13:13:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:43,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 13:13:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:43,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:43,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997565469] [2024-11-13 13:13:43,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997565469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:43,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:43,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:13:43,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131794840] [2024-11-13 13:13:43,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:43,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:43,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:43,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:43,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:43,542 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 13:13:43,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:43,936 INFO L93 Difference]: Finished difference Result 238 states and 306 transitions. [2024-11-13 13:13:43,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:13:43,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-11-13 13:13:43,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:43,939 INFO L225 Difference]: With dead ends: 238 [2024-11-13 13:13:43,939 INFO L226 Difference]: Without dead ends: 160 [2024-11-13 13:13:43,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:13:43,946 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 153 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:43,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 185 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:13:43,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-13 13:13:43,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2024-11-13 13:13:43,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 117 states have (on average 1.2735042735042734) internal successors, (149), 126 states have internal predecessors, (149), 16 states have call successors, (16), 15 states have call predecessors, (16), 20 states have return successors, (27), 18 states have call predecessors, (27), 16 states have call successors, (27) [2024-11-13 13:13:43,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 192 transitions. [2024-11-13 13:13:43,999 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 192 transitions. Word has length 37 [2024-11-13 13:13:43,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:43,999 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 192 transitions. [2024-11-13 13:13:44,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 13:13:44,000 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 192 transitions. [2024-11-13 13:13:44,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 13:13:44,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:44,007 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] [2024-11-13 13:13:44,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:13:44,007 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:44,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:44,008 INFO L85 PathProgramCache]: Analyzing trace with hash 630282670, now seen corresponding path program 1 times [2024-11-13 13:13:44,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:44,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004840747] [2024-11-13 13:13:44,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:44,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:44,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 13:13:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:44,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:44,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:13:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:44,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:44,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:44,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004840747] [2024-11-13 13:13:44,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004840747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:44,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:44,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:13:44,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307954912] [2024-11-13 13:13:44,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:44,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:13:44,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:44,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:13:44,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:13:44,329 INFO L87 Difference]: Start difference. First operand 154 states and 192 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 3 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) [2024-11-13 13:13:45,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:45,170 INFO L93 Difference]: Finished difference Result 577 states and 766 transitions. [2024-11-13 13:13:45,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:13:45,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 3 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 45 [2024-11-13 13:13:45,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:45,181 INFO L225 Difference]: With dead ends: 577 [2024-11-13 13:13:45,184 INFO L226 Difference]: Without dead ends: 430 [2024-11-13 13:13:45,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-13 13:13:45,187 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 330 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:45,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 489 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:13:45,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-13 13:13:45,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 424. [2024-11-13 13:13:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 317 states have (on average 1.2460567823343849) internal successors, (395), 342 states have internal predecessors, (395), 46 states have call successors, (46), 43 states have call predecessors, (46), 60 states have return successors, (105), 54 states have call predecessors, (105), 46 states have call successors, (105) [2024-11-13 13:13:45,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 546 transitions. [2024-11-13 13:13:45,297 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 546 transitions. Word has length 45 [2024-11-13 13:13:45,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:45,297 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 546 transitions. [2024-11-13 13:13:45,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 3 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) [2024-11-13 13:13:45,299 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 546 transitions. [2024-11-13 13:13:45,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 13:13:45,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:45,304 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] [2024-11-13 13:13:45,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:13:45,304 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:45,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:45,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2127171320, now seen corresponding path program 1 times [2024-11-13 13:13:45,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:45,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719376688] [2024-11-13 13:13:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:45,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:45,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 13:13:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:45,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 13:13:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:45,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:45,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:13:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:45,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:45,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719376688] [2024-11-13 13:13:45,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719376688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:45,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:45,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:13:45,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905755433] [2024-11-13 13:13:45,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:45,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:13:45,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:45,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:13:45,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:13:45,603 INFO L87 Difference]: Start difference. First operand 424 states and 546 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:13:46,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:46,340 INFO L93 Difference]: Finished difference Result 491 states and 633 transitions. [2024-11-13 13:13:46,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 13:13:46,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2024-11-13 13:13:46,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:46,353 INFO L225 Difference]: With dead ends: 491 [2024-11-13 13:13:46,353 INFO L226 Difference]: Without dead ends: 489 [2024-11-13 13:13:46,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-11-13 13:13:46,355 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 216 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:46,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 284 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:13:46,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2024-11-13 13:13:46,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 465. [2024-11-13 13:13:46,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 350 states have (on average 1.2314285714285715) internal successors, (431), 378 states have internal predecessors, (431), 50 states have call successors, (50), 43 states have call predecessors, (50), 64 states have return successors, (119), 59 states have call predecessors, (119), 50 states have call successors, (119) [2024-11-13 13:13:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 600 transitions. [2024-11-13 13:13:46,459 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 600 transitions. Word has length 49 [2024-11-13 13:13:46,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:46,460 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 600 transitions. [2024-11-13 13:13:46,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:13:46,461 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 600 transitions. [2024-11-13 13:13:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 13:13:46,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:46,467 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, 1, 1, 1, 1] [2024-11-13 13:13:46,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:13:46,467 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:46,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:46,468 INFO L85 PathProgramCache]: Analyzing trace with hash 546496624, now seen corresponding path program 1 times [2024-11-13 13:13:46,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:46,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052815648] [2024-11-13 13:13:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:46,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:46,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 13:13:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:46,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 13:13:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:46,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:46,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:13:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:46,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:46,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052815648] [2024-11-13 13:13:46,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052815648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:46,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:46,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:13:46,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353141378] [2024-11-13 13:13:46,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:46,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:13:46,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:46,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:13:46,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:13:46,767 INFO L87 Difference]: Start difference. First operand 465 states and 600 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-13 13:13:47,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:47,193 INFO L93 Difference]: Finished difference Result 956 states and 1301 transitions. [2024-11-13 13:13:47,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:13:47,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 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 55 [2024-11-13 13:13:47,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:47,198 INFO L225 Difference]: With dead ends: 956 [2024-11-13 13:13:47,198 INFO L226 Difference]: Without dead ends: 498 [2024-11-13 13:13:47,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:13:47,203 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 149 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:47,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 285 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:13:47,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2024-11-13 13:13:47,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 474. [2024-11-13 13:13:47,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 359 states have (on average 1.2256267409470751) internal successors, (440), 387 states have internal predecessors, (440), 50 states have call successors, (50), 43 states have call predecessors, (50), 64 states have return successors, (119), 59 states have call predecessors, (119), 50 states have call successors, (119) [2024-11-13 13:13:47,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 609 transitions. [2024-11-13 13:13:47,268 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 609 transitions. Word has length 55 [2024-11-13 13:13:47,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:47,269 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 609 transitions. [2024-11-13 13:13:47,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-13 13:13:47,269 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 609 transitions. [2024-11-13 13:13:47,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 13:13:47,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:47,271 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, 1, 1, 1, 1] [2024-11-13 13:13:47,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:13:47,271 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:47,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:47,272 INFO L85 PathProgramCache]: Analyzing trace with hash 412483118, now seen corresponding path program 1 times [2024-11-13 13:13:47,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:47,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9032735] [2024-11-13 13:13:47,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:47,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:47,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 13:13:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:47,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 13:13:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:47,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:47,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:13:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:47,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:47,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:47,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9032735] [2024-11-13 13:13:47,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9032735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:47,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:47,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:13:47,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309731581] [2024-11-13 13:13:47,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:47,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:13:47,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:47,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:13:47,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:13:47,506 INFO L87 Difference]: Start difference. First operand 474 states and 609 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 13:13:48,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:48,001 INFO L93 Difference]: Finished difference Result 930 states and 1241 transitions. [2024-11-13 13:13:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:13:48,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55 [2024-11-13 13:13:48,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:48,006 INFO L225 Difference]: With dead ends: 930 [2024-11-13 13:13:48,006 INFO L226 Difference]: Without dead ends: 463 [2024-11-13 13:13:48,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:13:48,009 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 239 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:48,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 221 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:13:48,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-13 13:13:48,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 452. [2024-11-13 13:13:48,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 342 states have (on average 1.2222222222222223) internal successors, (418), 368 states have internal predecessors, (418), 49 states have call successors, (49), 42 states have call predecessors, (49), 60 states have return successors, (110), 56 states have call predecessors, (110), 49 states have call successors, (110) [2024-11-13 13:13:48,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 577 transitions. [2024-11-13 13:13:48,085 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 577 transitions. Word has length 55 [2024-11-13 13:13:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:48,087 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 577 transitions. [2024-11-13 13:13:48,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 13:13:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 577 transitions. [2024-11-13 13:13:48,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-13 13:13:48,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:48,091 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:48,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:13:48,091 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:48,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:48,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1634588214, now seen corresponding path program 1 times [2024-11-13 13:13:48,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:48,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880366030] [2024-11-13 13:13:48,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:48,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:48,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 13:13:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:48,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 13:13:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:48,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:48,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:13:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:48,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 13:13:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:48,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-13 13:13:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:48,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:13:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:48,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:13:48,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:48,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880366030] [2024-11-13 13:13:48,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880366030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:48,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358202565] [2024-11-13 13:13:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:48,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:48,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:48,447 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:48,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:13:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:48,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:13:48,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:48,888 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:13:48,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358202565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:48,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:13:48,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2024-11-13 13:13:48,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512718887] [2024-11-13 13:13:48,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:48,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:13:48,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:48,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:13:48,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:13:48,891 INFO L87 Difference]: Start difference. First operand 452 states and 577 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-13 13:13:49,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:49,456 INFO L93 Difference]: Finished difference Result 853 states and 1140 transitions. [2024-11-13 13:13:49,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:13:49,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 5 states have call successors, (8) Word has length 97 [2024-11-13 13:13:49,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:49,461 INFO L225 Difference]: With dead ends: 853 [2024-11-13 13:13:49,461 INFO L226 Difference]: Without dead ends: 408 [2024-11-13 13:13:49,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:13:49,464 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 197 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:49,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 229 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:13:49,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-11-13 13:13:49,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 404. [2024-11-13 13:13:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 307 states have (on average 1.228013029315961) internal successors, (377), 327 states have internal predecessors, (377), 49 states have call successors, (49), 42 states have call predecessors, (49), 47 states have return successors, (93), 47 states have call predecessors, (93), 49 states have call successors, (93) [2024-11-13 13:13:49,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 519 transitions. [2024-11-13 13:13:49,541 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 519 transitions. Word has length 97 [2024-11-13 13:13:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:49,541 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 519 transitions. [2024-11-13 13:13:49,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-13 13:13:49,541 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 519 transitions. [2024-11-13 13:13:49,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-13 13:13:49,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:49,543 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:49,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:13:49,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 13:13:49,744 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:49,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:49,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1972086820, now seen corresponding path program 1 times [2024-11-13 13:13:49,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:49,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51899600] [2024-11-13 13:13:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:49,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:50,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 13:13:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:50,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 13:13:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:50,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 13:13:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:50,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:50,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:13:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:50,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-13 13:13:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:50,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 13:13:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:50,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:13:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:50,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:13:50,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:50,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51899600] [2024-11-13 13:13:50,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51899600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:50,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970078920] [2024-11-13 13:13:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:50,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:50,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:50,170 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:50,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:13:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:50,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:13:50,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:50,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 13:13:50,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970078920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:50,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:50,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 11 [2024-11-13 13:13:50,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441152943] [2024-11-13 13:13:50,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:50,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:13:50,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:50,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:13:50,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:13:50,819 INFO L87 Difference]: Start difference. First operand 404 states and 519 transitions. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 8 states have internal predecessors, (102), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-13 13:13:51,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:51,994 INFO L93 Difference]: Finished difference Result 951 states and 1274 transitions. [2024-11-13 13:13:51,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 13:13:51,995 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 8 states have internal predecessors, (102), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 101 [2024-11-13 13:13:51,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:52,003 INFO L225 Difference]: With dead ends: 951 [2024-11-13 13:13:52,003 INFO L226 Difference]: Without dead ends: 597 [2024-11-13 13:13:52,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 217 SyntacticMatches, 8 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=712, Unknown=0, NotChecked=0, Total=930 [2024-11-13 13:13:52,007 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 421 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:52,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 508 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 13:13:52,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2024-11-13 13:13:52,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 563. [2024-11-13 13:13:52,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 426 states have (on average 1.2253521126760563) internal successors, (522), 453 states have internal predecessors, (522), 70 states have call successors, (70), 61 states have call predecessors, (70), 66 states have return successors, (139), 64 states have call predecessors, (139), 70 states have call successors, (139) [2024-11-13 13:13:52,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 731 transitions. [2024-11-13 13:13:52,098 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 731 transitions. Word has length 101 [2024-11-13 13:13:52,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:52,099 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 731 transitions. [2024-11-13 13:13:52,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 8 states have internal predecessors, (102), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-13 13:13:52,100 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 731 transitions. [2024-11-13 13:13:52,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-13 13:13:52,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:52,105 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 13:13:52,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:13:52,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:52,314 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:52,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:52,314 INFO L85 PathProgramCache]: Analyzing trace with hash -271783460, now seen corresponding path program 2 times [2024-11-13 13:13:52,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:52,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853670860] [2024-11-13 13:13:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:52,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:52,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 13:13:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:52,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 13:13:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:52,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 13:13:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:52,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:52,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:13:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:52,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-13 13:13:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:52,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 13:13:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:52,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-13 13:13:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:53,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:13:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:53,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:53,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-13 13:13:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:53,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-13 13:13:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:53,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:13:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:53,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 49 proven. 23 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 13:13:53,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:53,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853670860] [2024-11-13 13:13:53,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853670860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:53,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406105721] [2024-11-13 13:13:53,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:13:53,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:53,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:53,106 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:53,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:13:53,300 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:13:53,300 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:53,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 13:13:53,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 13:13:53,455 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:13:53,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406105721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:53,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:13:53,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 12 [2024-11-13 13:13:53,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971212015] [2024-11-13 13:13:53,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:53,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:13:53,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:53,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:13:53,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:13:53,458 INFO L87 Difference]: Start difference. First operand 563 states and 731 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-13 13:13:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:53,902 INFO L93 Difference]: Finished difference Result 1437 states and 1922 transitions. [2024-11-13 13:13:53,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:13:53,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 147 [2024-11-13 13:13:53,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:53,913 INFO L225 Difference]: With dead ends: 1437 [2024-11-13 13:13:53,914 INFO L226 Difference]: Without dead ends: 923 [2024-11-13 13:13:53,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 172 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:13:53,919 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 180 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:53,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 616 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:13:53,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2024-11-13 13:13:54,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 814. [2024-11-13 13:13:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 615 states have (on average 1.2097560975609756) internal successors, (744), 648 states have internal predecessors, (744), 96 states have call successors, (96), 90 states have call predecessors, (96), 102 states have return successors, (189), 95 states have call predecessors, (189), 96 states have call successors, (189) [2024-11-13 13:13:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1029 transitions. [2024-11-13 13:13:54,037 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1029 transitions. Word has length 147 [2024-11-13 13:13:54,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:54,038 INFO L471 AbstractCegarLoop]: Abstraction has 814 states and 1029 transitions. [2024-11-13 13:13:54,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-13 13:13:54,038 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1029 transitions. [2024-11-13 13:13:54,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-13 13:13:54,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:54,043 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 13:13:54,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 13:13:54,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:54,244 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:54,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:54,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1487937186, now seen corresponding path program 1 times [2024-11-13 13:13:54,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:54,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405156025] [2024-11-13 13:13:54,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:54,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 13:13:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 13:13:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 13:13:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:13:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-13 13:13:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 13:13:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-13 13:13:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:13:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-13 13:13:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-13 13:13:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:13:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:13:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,597 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 43 proven. 6 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-13 13:13:54,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:54,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405156025] [2024-11-13 13:13:54,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405156025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:54,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776952900] [2024-11-13 13:13:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:54,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:54,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:54,602 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:54,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:13:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:54,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:13:54,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-13 13:13:54,852 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:13:54,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776952900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:54,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:13:54,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 8 [2024-11-13 13:13:54,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56526885] [2024-11-13 13:13:54,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:54,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:13:54,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:54,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:13:54,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:13:54,854 INFO L87 Difference]: Start difference. First operand 814 states and 1029 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-13 13:13:54,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:54,956 INFO L93 Difference]: Finished difference Result 1116 states and 1400 transitions. [2024-11-13 13:13:54,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:13:54,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 147 [2024-11-13 13:13:54,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:54,959 INFO L225 Difference]: With dead ends: 1116 [2024-11-13 13:13:54,959 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 13:13:54,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:13:54,966 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:54,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 400 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:13:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 13:13:54,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 13:13:54,969 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) [2024-11-13 13:13:54,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 13:13:54,970 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 147 [2024-11-13 13:13:54,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:54,970 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 13:13:54,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-13 13:13:54,971 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 13:13:54,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 13:13:54,975 INFO L782 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 13:13:55,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:13:55,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 13:13:55,181 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:55,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 13:13:58,248 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:13:58,275 WARN L162 FloydHoareUtils]: Requires clause for deactivatePump contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 1 ~systemActive~0) (<= 1 ~waterLevel~0)) Eliminated clause: (and (= 1 ~systemActive~0) (<= 1 ~waterLevel~0)) [2024-11-13 13:13:58,299 WARN L162 FloydHoareUtils]: Requires clause for timeShift contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| ~waterLevel~0) (let ((.cse0 (= 1 ~systemActive~0))) (or (and .cse0 (<= 2 |old(~waterLevel~0)|)) (and .cse0 (= |old(~pumpRunning~0)| 0) (<= 1 |old(~waterLevel~0)|))))) Eliminated clause: (let ((.cse0 (= 1 ~systemActive~0))) (or (and (= ~pumpRunning~0 0) .cse0 (<= 1 ~waterLevel~0)) (and (<= 2 ~waterLevel~0) .cse0))) [2024-11-13 13:13:58,316 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__highWaterSensor contained old-variable. Original clause: (and (= ~pumpRunning~0 0) (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |old(~pumpRunning~0)| 0))) (or (and .cse0 .cse1 (= ~waterLevel~0 ~systemActive~0)) (and (<= 2 ~waterLevel~0) .cse0 .cse1)))) Eliminated clause: (and (= ~pumpRunning~0 0) (let ((.cse0 (= 1 ~systemActive~0))) (or (and (<= 2 ~waterLevel~0) .cse0) (and .cse0 (= ~waterLevel~0 1))))) [2024-11-13 13:13:58,321 WARN L162 FloydHoareUtils]: Requires clause for waterRise contained old-variable. Original clause: (and (let ((.cse0 (= 1 ~systemActive~0))) (or (and .cse0 (<= 2 |old(~waterLevel~0)|)) (and (= ~pumpRunning~0 0) .cse0 (<= 1 |old(~waterLevel~0)|)))) (= |old(~waterLevel~0)| ~waterLevel~0)) Eliminated clause: (let ((.cse0 (= 1 ~systemActive~0))) (or (and (= ~pumpRunning~0 0) .cse0 (<= 1 ~waterLevel~0)) (and (<= 2 ~waterLevel~0) .cse0))) [2024-11-13 13:13:58,331 WARN L162 FloydHoareUtils]: Requires clause for processEnvironment__wrappee__methaneQuery contained old-variable. Original clause: (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 1 ~systemActive~0) (<= 1 ~waterLevel~0)) Eliminated clause: (and (= 1 ~systemActive~0) (<= 1 ~waterLevel~0)) [2024-11-13 13:13:58,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:13:58 BoogieIcfgContainer [2024-11-13 13:13:58,338 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:13:58,338 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:13:58,339 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:13:58,339 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:13:58,340 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:13:42" (3/4) ... [2024-11-13 13:13:58,342 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 13:13:58,348 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2024-11-13 13:13:58,349 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2024-11-13 13:13:58,349 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2024-11-13 13:13:58,349 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2024-11-13 13:13:58,349 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2024-11-13 13:13:58,349 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2024-11-13 13:13:58,350 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2024-11-13 13:13:58,350 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2024-11-13 13:13:58,350 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2024-11-13 13:13:58,360 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-11-13 13:13:58,361 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-13 13:13:58,361 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-13 13:13:58,362 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 13:13:58,362 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 13:13:58,514 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 13:13:58,515 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 13:13:58,515 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:13:58,516 INFO L158 Benchmark]: Toolchain (without parser) took 17722.71ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 118.5MB in the beginning and 169.1MB in the end (delta: -50.6MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2024-11-13 13:13:58,516 INFO L158 Benchmark]: CDTParser took 1.24ms. Allocated memory is still 142.6MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:13:58,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 705.07ms. Allocated memory is still 142.6MB. Free memory was 118.3MB in the beginning and 99.4MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 13:13:58,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.56ms. Allocated memory is still 142.6MB. Free memory was 99.4MB in the beginning and 97.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:13:58,518 INFO L158 Benchmark]: Boogie Preprocessor took 58.07ms. Allocated memory is still 142.6MB. Free memory was 97.4MB in the beginning and 95.7MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:13:58,518 INFO L158 Benchmark]: RCFGBuilder took 671.16ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 77.1MB in the end (delta: 18.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 13:13:58,519 INFO L158 Benchmark]: TraceAbstraction took 16021.24ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 76.6MB in the beginning and 175.2MB in the end (delta: -98.6MB). Peak memory consumption was 83.9MB. Max. memory is 16.1GB. [2024-11-13 13:13:58,519 INFO L158 Benchmark]: Witness Printer took 176.56ms. Allocated memory is still 218.1MB. Free memory was 175.2MB in the beginning and 169.1MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:13:58,522 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.24ms. Allocated memory is still 142.6MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 705.07ms. Allocated memory is still 142.6MB. Free memory was 118.3MB in the beginning and 99.4MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.56ms. Allocated memory is still 142.6MB. Free memory was 99.4MB in the beginning and 97.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 58.07ms. Allocated memory is still 142.6MB. Free memory was 97.4MB in the beginning and 95.7MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 671.16ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 77.1MB in the end (delta: 18.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 16021.24ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 76.6MB in the beginning and 175.2MB in the end (delta: -98.6MB). Peak memory consumption was 83.9MB. Max. memory is 16.1GB. * Witness Printer took 176.56ms. Allocated memory is still 218.1MB. Free memory was 175.2MB in the beginning and 169.1MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] - GenericResultAtLocation [Line: 58]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [58] - GenericResultAtLocation [Line: 96]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [96] - GenericResultAtLocation [Line: 347]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [347] - GenericResultAtLocation [Line: 415]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [415] - GenericResultAtLocation [Line: 519]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [519] - GenericResultAtLocation [Line: 545]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [545] - GenericResultAtLocation [Line: 911]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [911] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.8s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2025 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1989 mSDsluCounter, 3658 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2531 mSDsCounter, 562 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2431 IncrementalHoareTripleChecker+Invalid, 2993 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 562 mSolverCounterUnsat, 1127 mSDtfsCounter, 2431 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 860 GetRequests, 731 SyntacticMatches, 12 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=814occurred in iteration=11, InterpolantAutomatonStates: 110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 218 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1288 NumberOfCodeBlocks, 1288 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1372 ConstructedInterpolants, 0 QuantifiedInterpolants, 2488 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1524 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 17 InterpolantComputations, 11 PerfectInterpolantSequences, 486/548 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: 360]: Location Invariant Derived location invariant: 0 - InvariantResult [Line: 361]: Loop Invariant Derived loop invariant: ((((2 <= waterLevel) && (1 == systemActive)) && (splverifierCounter == 0)) || ((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (1 <= waterLevel))) - InvariantResult [Line: 923]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 245]: Procedure Contract for deactivatePump Derived contract for procedure deactivatePump. Requires: ((1 == systemActive) && (1 <= waterLevel)) Ensures: ((((pumpRunning == 0) && (1 == systemActive)) && (1 <= waterLevel)) && (((((systemActive == \old(systemActive)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 135]: Procedure Contract for processEnvironment__wrappee__base Derived contract for procedure processEnvironment__wrappee__base. Requires: (((pumpRunning == 0) && (1 == systemActive)) && (1 <= waterLevel)) Ensures: ((((pumpRunning == 0) && (1 == systemActive)) && (1 <= waterLevel)) && ((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 443]: Procedure Contract for changeMethaneLevel Derived contract for procedure changeMethaneLevel. Requires: ((((pumpRunning == 0) && (1 == systemActive)) && (1 <= waterLevel)) || ((2 <= waterLevel) && (1 == systemActive))) Ensures: (((((pumpRunning == 0) && (1 == systemActive)) && (1 <= waterLevel)) || ((2 <= waterLevel) && (1 == systemActive))) && (((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 913]: Procedure Contract for cleanup Derived contract for procedure cleanup. Requires: 0 Ensures: (0 && ((((systemActive == \old(systemActive)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 111]: Procedure Contract for timeShift Derived contract for procedure timeShift. Requires: ((((pumpRunning == 0) && (1 == systemActive)) && (1 <= waterLevel)) || ((2 <= waterLevel) && (1 == systemActive))) Ensures: ((((((1 == systemActive) && (2 <= \old(waterLevel))) || (\old(pumpRunning) == 0)) && (((2 <= waterLevel) && (waterLevel <= \old(waterLevel))) || (((pumpRunning == 0) && (1 <= waterLevel)) && (waterLevel <= \old(waterLevel))))) && ((\old(pumpRunning) != 0) || ((1 == systemActive) && (\old(waterLevel) == waterLevel)))) && ((((systemActive == \old(systemActive)) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 143]: Procedure Contract for processEnvironment__wrappee__highWaterSensor Derived contract for procedure processEnvironment__wrappee__highWaterSensor. Requires: ((pumpRunning == 0) && (((2 <= waterLevel) && (1 == systemActive)) || ((1 == systemActive) && (waterLevel == 1)))) Ensures: ((((1 == systemActive) && (\old(pumpRunning) == 0)) && ((1 < waterLevel) || ((pumpRunning == 0) && (waterLevel == 1)))) && (((((systemActive == \old(systemActive)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 431]: Procedure Contract for waterRise Derived contract for procedure waterRise. Requires: ((((pumpRunning == 0) && (1 == systemActive)) && (1 <= waterLevel)) || ((2 <= waterLevel) && (1 == systemActive))) Ensures: (((((\old(waterLevel) < 2) || (\old(waterLevel) == waterLevel)) && (2 <= waterLevel)) && (((1 == systemActive) && (2 <= \old(waterLevel))) || (((pumpRunning == 0) && (1 == systemActive)) && (1 <= \old(waterLevel))))) && (((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 169]: Procedure Contract for processEnvironment__wrappee__methaneQuery Derived contract for procedure processEnvironment__wrappee__methaneQuery. Requires: ((1 == systemActive) && (1 <= waterLevel)) Ensures: ((((1 == systemActive) && (1 <= waterLevel)) && ((pumpRunning == 0) || (1 < waterLevel))) && (((((systemActive == \old(systemActive)) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) - ProcedureContractResult [Line: 253]: Procedure Contract for isMethaneAlarm Derived contract for procedure isMethaneAlarm. Requires: ((1 == systemActive) && (1 <= waterLevel)) Ensures: (((1 == systemActive) && (1 <= waterLevel)) && ((((((pumpRunning == \old(pumpRunning)) && (systemActive == \old(systemActive))) && (waterLevel == \old(waterLevel))) && (methaneLevelCritical == \old(methaneLevelCritical))) && (head == \old(head))) && (cleanupTimeShifts == \old(cleanupTimeShifts)))) RESULT: Ultimate proved your program to be correct! [2024-11-13 13:13:58,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc73a658-0e51-44ea-b1f0-b099cba1849d/bin/uautomizer-verify-qhAvR1uOyd/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