./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu --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 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:04:57,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:04:57,229 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:04:57,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:04:57,234 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:04:57,278 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:04:57,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:04:57,279 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:04:57,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:04:57,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:04:57,292 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:04:57,293 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:04:57,293 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:04:57,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:04:57,296 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:04:57,296 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:04:57,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:04:57,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:04:57,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:04:57,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:04:57,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:04:57,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:04:57,299 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:04:57,299 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:04:57,299 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:04:57,300 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:04:57,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:04:57,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:04:57,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:57,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:04:57,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:04:57,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:04:57,304 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:04:57,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:04:57,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:04:57,304 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:04:57,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:04:57,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:04:57,305 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:04:57,305 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 [2023-11-19 08:04:57,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:04:57,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:04:57,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:04:57,636 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:04:57,637 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:04:57,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2023-11-19 08:05:00,713 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:01,051 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:01,052 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2023-11-19 08:05:01,069 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/data/a85c26606/284e33e2347e429581f3d00fd9d86097/FLAGeeda447d4 [2023-11-19 08:05:01,085 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/data/a85c26606/284e33e2347e429581f3d00fd9d86097 [2023-11-19 08:05:01,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:01,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:01,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:01,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:01,099 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:01,099 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:01" (1/1) ... [2023-11-19 08:05:01,100 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d34442a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:01, skipping insertion in model container [2023-11-19 08:05:01,101 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:01" (1/1) ... [2023-11-19 08:05:01,174 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:01,469 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2023-11-19 08:05:01,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:01,496 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:01,506 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] [2023-11-19 08:05:01,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [150] [2023-11-19 08:05:01,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [516] [2023-11-19 08:05:01,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [554] [2023-11-19 08:05:01,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [655] [2023-11-19 08:05:01,509 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [836] [2023-11-19 08:05:01,509 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [905] [2023-11-19 08:05:01,510 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [914] [2023-11-19 08:05:01,604 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2023-11-19 08:05:01,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:01,638 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:01,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:01 WrapperNode [2023-11-19 08:05:01,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:01,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:01,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:01,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:01,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:01" (1/1) ... [2023-11-19 08:05:01,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:01" (1/1) ... [2023-11-19 08:05:01,692 INFO L138 Inliner]: procedures = 55, calls = 97, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 182 [2023-11-19 08:05:01,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:01,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:01,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:01,696 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:01,705 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:01" (1/1) ... [2023-11-19 08:05:01,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:01" (1/1) ... [2023-11-19 08:05:01,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:01" (1/1) ... [2023-11-19 08:05:01,709 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:01" (1/1) ... [2023-11-19 08:05:01,714 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:01" (1/1) ... [2023-11-19 08:05:01,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:01" (1/1) ... [2023-11-19 08:05:01,720 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:01" (1/1) ... [2023-11-19 08:05:01,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:01" (1/1) ... [2023-11-19 08:05:01,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:01,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:01,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:01,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:01,726 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:01" (1/1) ... [2023-11-19 08:05:01,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:01,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:01,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:01,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-19 08:05:01,846 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-19 08:05:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-19 08:05:01,848 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-19 08:05:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-19 08:05:01,849 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-19 08:05:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-11-19 08:05:01,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-11-19 08:05:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-19 08:05:01,850 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-19 08:05:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:05:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-19 08:05:01,850 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-19 08:05:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:01,973 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:01,976 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:02,272 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:02,280 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:02,280 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:05:02,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:02 BoogieIcfgContainer [2023-11-19 08:05:02,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:02,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:02,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:02,292 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:02,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:01" (1/3) ... [2023-11-19 08:05:02,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c214adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:02, skipping insertion in model container [2023-11-19 08:05:02,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:01" (2/3) ... [2023-11-19 08:05:02,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c214adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:02, skipping insertion in model container [2023-11-19 08:05:02,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:02" (3/3) ... [2023-11-19 08:05:02,295 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2023-11-19 08:05:02,317 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:02,317 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:05:02,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:02,374 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@71de04a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:02,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:05:02,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 64 states have (on average 1.390625) internal successors, (89), 70 states have internal predecessors, (89), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 08:05:02,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 08:05:02,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:02,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:02,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:02,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:02,396 INFO L85 PathProgramCache]: Analyzing trace with hash 715093165, now seen corresponding path program 1 times [2023-11-19 08:05:02,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:02,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804294786] [2023-11-19 08:05:02,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:02,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:02,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-19 08:05:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:02,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:02,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804294786] [2023-11-19 08:05:02,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804294786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:02,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:02,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:02,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519686870] [2023-11-19 08:05:02,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:02,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:05:02,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:02,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:05:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:05:02,709 INFO L87 Difference]: Start difference. First operand has 81 states, 64 states have (on average 1.390625) internal successors, (89), 70 states have internal predecessors, (89), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:05:02,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:02,743 INFO L93 Difference]: Finished difference Result 153 states and 208 transitions. [2023-11-19 08:05:02,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:05:02,745 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-11-19 08:05:02,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:02,756 INFO L225 Difference]: With dead ends: 153 [2023-11-19 08:05:02,756 INFO L226 Difference]: Without dead ends: 72 [2023-11-19 08:05:02,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:05:02,764 INFO L413 NwaCegarLoop]: 101 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, 101 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 [2023-11-19 08:05:02,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:02,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-19 08:05:02,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-11-19 08:05:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 62 states have internal predecessors, (75), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 08:05:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2023-11-19 08:05:02,842 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 25 [2023-11-19 08:05:02,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:02,842 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2023-11-19 08:05:02,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:05:02,843 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2023-11-19 08:05:02,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 08:05:02,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:02,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:02,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:05:02,846 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:02,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:02,847 INFO L85 PathProgramCache]: Analyzing trace with hash 793385251, now seen corresponding path program 1 times [2023-11-19 08:05:02,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:02,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770751390] [2023-11-19 08:05:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:02,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:02,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 08:05:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:02,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:02,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:02,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770751390] [2023-11-19 08:05:02,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770751390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:02,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:02,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:05:02,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592598065] [2023-11-19 08:05:02,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:02,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:02,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:02,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:02,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:02,965 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:05:02,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:02,986 INFO L93 Difference]: Finished difference Result 104 states and 133 transitions. [2023-11-19 08:05:02,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:02,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-11-19 08:05:02,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:02,988 INFO L225 Difference]: With dead ends: 104 [2023-11-19 08:05:02,988 INFO L226 Difference]: Without dead ends: 63 [2023-11-19 08:05:02,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:02,991 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 18 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 136 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 [2023-11-19 08:05:02,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 136 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:02,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-19 08:05:03,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-19 08:05:03,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 56 states have internal predecessors, (68), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 08:05:03,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2023-11-19 08:05:03,002 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 26 [2023-11-19 08:05:03,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:03,003 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2023-11-19 08:05:03,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:05:03,003 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2023-11-19 08:05:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 08:05:03,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:03,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:03,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:05:03,006 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:03,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:03,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1810241430, now seen corresponding path program 1 times [2023-11-19 08:05:03,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:03,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939780204] [2023-11-19 08:05:03,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:03,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:03,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 08:05:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:03,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:03,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:03,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939780204] [2023-11-19 08:05:03,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939780204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:03,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:03,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:05:03,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013882839] [2023-11-19 08:05:03,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:03,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:03,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:03,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:03,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:03,226 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:05:03,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:03,278 INFO L93 Difference]: Finished difference Result 171 states and 223 transitions. [2023-11-19 08:05:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:03,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2023-11-19 08:05:03,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:03,281 INFO L225 Difference]: With dead ends: 171 [2023-11-19 08:05:03,281 INFO L226 Difference]: Without dead ends: 116 [2023-11-19 08:05:03,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:03,284 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 57 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:03,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 163 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:03,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-19 08:05:03,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2023-11-19 08:05:03,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 88 states have (on average 1.3636363636363635) internal successors, (120), 97 states have internal predecessors, (120), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 08:05:03,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2023-11-19 08:05:03,333 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 31 [2023-11-19 08:05:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:03,334 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2023-11-19 08:05:03,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:05:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2023-11-19 08:05:03,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 08:05:03,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:03,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:03,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:05:03,340 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:03,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:03,342 INFO L85 PathProgramCache]: Analyzing trace with hash 423901217, now seen corresponding path program 1 times [2023-11-19 08:05:03,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:03,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515045409] [2023-11-19 08:05:03,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:03,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:03,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 08:05:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:03,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:03,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515045409] [2023-11-19 08:05:03,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515045409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:03,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:03,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:03,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253771217] [2023-11-19 08:05:03,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:03,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:03,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:03,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:03,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:03,571 INFO L87 Difference]: Start difference. First operand 111 states and 144 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:05:03,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:03,672 INFO L93 Difference]: Finished difference Result 296 states and 392 transitions. [2023-11-19 08:05:03,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:05:03,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2023-11-19 08:05:03,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:03,676 INFO L225 Difference]: With dead ends: 296 [2023-11-19 08:05:03,676 INFO L226 Difference]: Without dead ends: 193 [2023-11-19 08:05:03,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:03,679 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 46 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:03,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 282 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:03,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-19 08:05:03,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 185. [2023-11-19 08:05:03,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 144 states have (on average 1.3263888888888888) internal successors, (191), 155 states have internal predecessors, (191), 20 states have call successors, (20), 20 states have call predecessors, (20), 20 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2023-11-19 08:05:03,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 235 transitions. [2023-11-19 08:05:03,728 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 235 transitions. Word has length 34 [2023-11-19 08:05:03,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:03,729 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 235 transitions. [2023-11-19 08:05:03,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:05:03,730 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 235 transitions. [2023-11-19 08:05:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 08:05:03,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:03,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:03,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:05:03,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:03,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:03,737 INFO L85 PathProgramCache]: Analyzing trace with hash 152019940, now seen corresponding path program 1 times [2023-11-19 08:05:03,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:03,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598246252] [2023-11-19 08:05:03,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:03,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:03,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-19 08:05:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:03,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:03,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:03,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598246252] [2023-11-19 08:05:03,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598246252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:03,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:03,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:05:03,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279925166] [2023-11-19 08:05:03,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:03,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:03,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:03,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:03,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:03,894 INFO L87 Difference]: Start difference. First operand 185 states and 235 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:05:03,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:03,968 INFO L93 Difference]: Finished difference Result 519 states and 686 transitions. [2023-11-19 08:05:03,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:03,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2023-11-19 08:05:03,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:03,972 INFO L225 Difference]: With dead ends: 519 [2023-11-19 08:05:03,973 INFO L226 Difference]: Without dead ends: 342 [2023-11-19 08:05:03,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:03,977 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 48 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:03,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 144 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:03,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-11-19 08:05:04,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 340. [2023-11-19 08:05:04,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 267 states have (on average 1.3108614232209739) internal successors, (350), 282 states have internal predecessors, (350), 38 states have call successors, (38), 38 states have call predecessors, (38), 34 states have return successors, (50), 34 states have call predecessors, (50), 38 states have call successors, (50) [2023-11-19 08:05:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 438 transitions. [2023-11-19 08:05:04,016 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 438 transitions. Word has length 40 [2023-11-19 08:05:04,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:04,017 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 438 transitions. [2023-11-19 08:05:04,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:05:04,017 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 438 transitions. [2023-11-19 08:05:04,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 08:05:04,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:04,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:04,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:05:04,020 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:04,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:04,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1840963682, now seen corresponding path program 1 times [2023-11-19 08:05:04,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:04,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320036659] [2023-11-19 08:05:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:04,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:04,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-19 08:05:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:04,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:04,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320036659] [2023-11-19 08:05:04,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320036659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:04,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:04,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:04,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916839181] [2023-11-19 08:05:04,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:04,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:04,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:04,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:04,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:04,099 INFO L87 Difference]: Start difference. First operand 340 states and 438 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:05:04,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:04,162 INFO L93 Difference]: Finished difference Result 728 states and 956 transitions. [2023-11-19 08:05:04,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:04,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2023-11-19 08:05:04,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:04,167 INFO L225 Difference]: With dead ends: 728 [2023-11-19 08:05:04,167 INFO L226 Difference]: Without dead ends: 396 [2023-11-19 08:05:04,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:04,170 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 13 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:04,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 343 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:04,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-19 08:05:04,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 352. [2023-11-19 08:05:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 279 states have (on average 1.2974910394265233) internal successors, (362), 294 states have internal predecessors, (362), 38 states have call successors, (38), 38 states have call predecessors, (38), 34 states have return successors, (50), 34 states have call predecessors, (50), 38 states have call successors, (50) [2023-11-19 08:05:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 450 transitions. [2023-11-19 08:05:04,207 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 450 transitions. Word has length 40 [2023-11-19 08:05:04,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:04,208 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 450 transitions. [2023-11-19 08:05:04,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:05:04,208 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 450 transitions. [2023-11-19 08:05:04,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 08:05:04,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:04,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:04,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:05:04,211 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:04,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash 252615780, now seen corresponding path program 1 times [2023-11-19 08:05:04,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:04,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321541081] [2023-11-19 08:05:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:04,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:04,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-19 08:05:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:04,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:04,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321541081] [2023-11-19 08:05:04,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321541081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:04,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:04,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:04,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610187872] [2023-11-19 08:05:04,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:04,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:04,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:04,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:04,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:04,323 INFO L87 Difference]: Start difference. First operand 352 states and 450 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:05:04,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:04,436 INFO L93 Difference]: Finished difference Result 670 states and 859 transitions. [2023-11-19 08:05:04,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:05:04,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2023-11-19 08:05:04,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:04,440 INFO L225 Difference]: With dead ends: 670 [2023-11-19 08:05:04,441 INFO L226 Difference]: Without dead ends: 326 [2023-11-19 08:05:04,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:05:04,446 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 109 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:04,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 340 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:04,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-19 08:05:04,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 281. [2023-11-19 08:05:04,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 222 states have (on average 1.2702702702702702) internal successors, (282), 235 states have internal predecessors, (282), 30 states have call successors, (30), 30 states have call predecessors, (30), 28 states have return successors, (34), 28 states have call predecessors, (34), 30 states have call successors, (34) [2023-11-19 08:05:04,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 346 transitions. [2023-11-19 08:05:04,471 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 346 transitions. Word has length 40 [2023-11-19 08:05:04,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:04,471 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 346 transitions. [2023-11-19 08:05:04,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:05:04,472 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 346 transitions. [2023-11-19 08:05:04,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 08:05:04,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:04,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:04,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:05:04,476 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:04,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:04,477 INFO L85 PathProgramCache]: Analyzing trace with hash -812942464, now seen corresponding path program 1 times [2023-11-19 08:05:04,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:04,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884743738] [2023-11-19 08:05:04,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:04,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:04,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:05:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:04,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 08:05:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:04,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:04,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884743738] [2023-11-19 08:05:04,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884743738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:04,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:04,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:04,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123591858] [2023-11-19 08:05:04,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:04,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:04,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:04,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:04,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:04,648 INFO L87 Difference]: Start difference. First operand 281 states and 346 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 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) [2023-11-19 08:05:04,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:04,796 INFO L93 Difference]: Finished difference Result 584 states and 749 transitions. [2023-11-19 08:05:04,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:04,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 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 44 [2023-11-19 08:05:04,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:04,803 INFO L225 Difference]: With dead ends: 584 [2023-11-19 08:05:04,804 INFO L226 Difference]: Without dead ends: 582 [2023-11-19 08:05:04,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:04,806 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 123 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:04,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 187 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:05:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-11-19 08:05:04,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 510. [2023-11-19 08:05:04,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 410 states have (on average 1.2951219512195122) internal successors, (531), 441 states have internal predecessors, (531), 53 states have call successors, (53), 41 states have call predecessors, (53), 46 states have return successors, (81), 50 states have call predecessors, (81), 53 states have call successors, (81) [2023-11-19 08:05:04,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 665 transitions. [2023-11-19 08:05:04,878 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 665 transitions. Word has length 44 [2023-11-19 08:05:04,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:04,880 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 665 transitions. [2023-11-19 08:05:04,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 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) [2023-11-19 08:05:04,881 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 665 transitions. [2023-11-19 08:05:04,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 08:05:04,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:04,885 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:04,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:05:04,887 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:04,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:04,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1757301241, now seen corresponding path program 1 times [2023-11-19 08:05:04,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:04,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957890736] [2023-11-19 08:05:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:04,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:04,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:05:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:04,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-19 08:05:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:04,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:05:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:05,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-19 08:05:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 08:05:05,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:05,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957890736] [2023-11-19 08:05:05,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957890736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:05,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:05,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:05:05,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582840730] [2023-11-19 08:05:05,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:05,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:05,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:05,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:05,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:05,015 INFO L87 Difference]: Start difference. First operand 510 states and 665 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 08:05:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:05,286 INFO L93 Difference]: Finished difference Result 864 states and 1122 transitions. [2023-11-19 08:05:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:05:05,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 74 [2023-11-19 08:05:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:05,290 INFO L225 Difference]: With dead ends: 864 [2023-11-19 08:05:05,290 INFO L226 Difference]: Without dead ends: 362 [2023-11-19 08:05:05,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:05:05,293 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 162 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:05,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 290 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:05:05,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-19 08:05:05,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 327. [2023-11-19 08:05:05,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 261 states have (on average 1.2681992337164751) internal successors, (331), 281 states have internal predecessors, (331), 34 states have call successors, (34), 28 states have call predecessors, (34), 31 states have return successors, (48), 32 states have call predecessors, (48), 34 states have call successors, (48) [2023-11-19 08:05:05,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 413 transitions. [2023-11-19 08:05:05,342 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 413 transitions. Word has length 74 [2023-11-19 08:05:05,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:05,342 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 413 transitions. [2023-11-19 08:05:05,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 08:05:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 413 transitions. [2023-11-19 08:05:05,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 08:05:05,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:05,347 INFO L195 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] [2023-11-19 08:05:05,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:05:05,347 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:05,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:05,348 INFO L85 PathProgramCache]: Analyzing trace with hash -835138969, now seen corresponding path program 1 times [2023-11-19 08:05:05,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:05,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520432609] [2023-11-19 08:05:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:05,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:05,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:05:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:05,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-19 08:05:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:05,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 08:05:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:05,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-19 08:05:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:05,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-19 08:05:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:05:05,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:05,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520432609] [2023-11-19 08:05:05,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520432609] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:05,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827348229] [2023-11-19 08:05:05,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:05,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:05,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:05,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:05,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:05:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:05,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 08:05:05,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:05,874 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 08:05:05,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:05:06,021 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 08:05:06,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827348229] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:06,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:05:06,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 5] total 13 [2023-11-19 08:05:06,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770128634] [2023-11-19 08:05:06,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:06,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:06,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:06,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:06,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:05:06,024 INFO L87 Difference]: Start difference. First operand 327 states and 413 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:05:06,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:06,173 INFO L93 Difference]: Finished difference Result 930 states and 1204 transitions. [2023-11-19 08:05:06,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:05:06,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 76 [2023-11-19 08:05:06,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:06,178 INFO L225 Difference]: With dead ends: 930 [2023-11-19 08:05:06,178 INFO L226 Difference]: Without dead ends: 611 [2023-11-19 08:05:06,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:05:06,181 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 43 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:06,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 356 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:06,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-11-19 08:05:06,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 558. [2023-11-19 08:05:06,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 439 states have (on average 1.2369020501138952) internal successors, (543), 474 states have internal predecessors, (543), 61 states have call successors, (61), 51 states have call predecessors, (61), 57 states have return successors, (87), 57 states have call predecessors, (87), 61 states have call successors, (87) [2023-11-19 08:05:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 691 transitions. [2023-11-19 08:05:06,245 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 691 transitions. Word has length 76 [2023-11-19 08:05:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:06,245 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 691 transitions. [2023-11-19 08:05:06,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:05:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 691 transitions. [2023-11-19 08:05:06,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 08:05:06,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:06,249 INFO L195 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] [2023-11-19 08:05:06,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:06,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 08:05:06,464 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:06,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:06,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1210131555, now seen corresponding path program 1 times [2023-11-19 08:05:06,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:06,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826187457] [2023-11-19 08:05:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:06,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:05:06,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:05:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:05:06,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:05:06,545 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:05:06,546 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 08:05:06,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:05:06,550 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:06,555 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:05:06,622 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated [2023-11-19 08:05:06,629 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated [2023-11-19 08:05:06,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:05:06 BoogieIcfgContainer [2023-11-19 08:05:06,652 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:05:06,654 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:05:06,654 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:05:06,654 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:05:06,655 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:02" (3/4) ... [2023-11-19 08:05:06,656 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 08:05:06,679 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated [2023-11-19 08:05:06,684 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated [2023-11-19 08:05:06,768 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:05:06,768 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:05:06,769 INFO L158 Benchmark]: Toolchain (without parser) took 5677.32ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 102.7MB in the beginning and 91.4MB in the end (delta: 11.3MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2023-11-19 08:05:06,769 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 104.9MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:05:06,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 546.20ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 83.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 08:05:06,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.59ms. Allocated memory is still 142.6MB. Free memory was 83.2MB in the beginning and 80.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:05:06,770 INFO L158 Benchmark]: Boogie Preprocessor took 29.29ms. Allocated memory is still 142.6MB. Free memory was 80.5MB in the beginning and 79.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:05:06,771 INFO L158 Benchmark]: RCFGBuilder took 560.07ms. Allocated memory is still 142.6MB. Free memory was 79.0MB in the beginning and 63.7MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 08:05:06,772 INFO L158 Benchmark]: TraceAbstraction took 4364.14ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 62.8MB in the beginning and 97.7MB in the end (delta: -34.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:05:06,772 INFO L158 Benchmark]: Witness Printer took 114.37ms. Allocated memory is still 172.0MB. Free memory was 97.7MB in the beginning and 91.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 08:05:06,775 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 104.9MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 546.20ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 83.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.59ms. Allocated memory is still 142.6MB. Free memory was 83.2MB in the beginning and 80.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.29ms. Allocated memory is still 142.6MB. Free memory was 80.5MB in the beginning and 79.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 560.07ms. Allocated memory is still 142.6MB. Free memory was 79.0MB in the beginning and 63.7MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4364.14ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 62.8MB in the beginning and 97.7MB in the end (delta: -34.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 114.37ms. Allocated memory is still 172.0MB. Free memory was 97.7MB in the beginning and 91.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] - GenericResultAtLocation [Line: 150]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [150] - GenericResultAtLocation [Line: 516]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [516] - GenericResultAtLocation [Line: 554]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [554] - GenericResultAtLocation [Line: 655]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [655] - GenericResultAtLocation [Line: 836]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [836] - GenericResultAtLocation [Line: 905]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [905] - GenericResultAtLocation [Line: 914]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [914] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret49 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - CounterExampleResult [Line: 910]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L320] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int cleanupTimeShifts = 4; [L661] int pumpRunning = 0; [L662] int systemActive = 1; [L915] int methAndRunningLastTime ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L633] int retValue_acc ; [L634] int tmp ; [L638] FCALL select_helpers() [L639] FCALL select_features() [L640] CALL, EXPR valid_product() [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L640] RET, EXPR valid_product() [L640] tmp = valid_product() [L642] COND TRUE \read(tmp) [L644] FCALL setup() [L645] CALL runTest() [L626] CALL __utac_acc__Specification2_spec__1() [L920] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L626] RET __utac_acc__Specification2_spec__1() [L627] CALL test() [L838] int splverifierCounter ; [L839] int tmp ; [L840] int tmp___0 ; [L841] int tmp___1 ; [L842] int tmp___2 ; [L845] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L847] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L849] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L855] tmp = __VERIFIER_nondet_int() [L857] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L859] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L859] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L865] tmp___0 = __VERIFIER_nondet_int() [L867] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L869] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L87] COND FALSE !(\read(methaneLevelCritical)) [L90] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L869] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L875] tmp___2 = __VERIFIER_nondet_int() [L877] COND FALSE !(\read(tmp___2)) [L883] tmp___1 = __VERIFIER_nondet_int() [L885] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L894] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L669] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L676] COND TRUE \read(systemActive) [L678] CALL processEnvironment() [L698] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L701] COND TRUE ! pumpRunning [L703] CALL, EXPR isHighWaterLevel() [L795] int retValue_acc ; [L796] int tmp ; [L797] int tmp___0 ; [L801] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND FALSE !(waterLevel < 2) [L144] retValue_acc = 0 [L145] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L801] RET, EXPR isHighWaterSensorDry() [L801] tmp = isHighWaterSensorDry() [L803] COND FALSE !(\read(tmp)) [L806] tmp___0 = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L808] retValue_acc = tmp___0 [L809] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L703] RET, EXPR isHighWaterLevel() [L703] tmp = isHighWaterLevel() [L705] COND TRUE \read(tmp) [L707] CALL activatePump() [L726] pumpRunning = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L707] RET activatePump() [L678] RET processEnvironment() [L684] CALL __utac_acc__Specification2_spec__2() [L925] int tmp ; [L926] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L930] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L930] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L930] tmp = isMethaneLevelCritical() [L932] COND TRUE \read(tmp) [L934] CALL, EXPR isPumpRunning() [L750] int retValue_acc ; [L753] retValue_acc = pumpRunning [L754] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L934] RET, EXPR isPumpRunning() [L934] tmp___0 = isPumpRunning() [L936] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L937] COND FALSE !(\read(methAndRunningLastTime)) [L942] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L684] RET __utac_acc__Specification2_spec__2() [L894] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L847] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L849] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L855] tmp = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L865] tmp___0 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L875] tmp___2 = __VERIFIER_nondet_int() [L877] COND FALSE !(\read(tmp___2)) [L883] tmp___1 = __VERIFIER_nondet_int() [L885] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L894] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L669] COND TRUE \read(pumpRunning) [L671] CALL lowerWaterLevel() [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L671] RET lowerWaterLevel() [L676] COND TRUE \read(systemActive) [L678] CALL processEnvironment() [L698] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L701] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L716] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L678] RET processEnvironment() [L684] CALL __utac_acc__Specification2_spec__2() [L925] int tmp ; [L926] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L930] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L930] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L930] tmp = isMethaneLevelCritical() [L932] COND TRUE \read(tmp) [L934] CALL, EXPR isPumpRunning() [L750] int retValue_acc ; [L753] retValue_acc = pumpRunning [L754] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L934] RET, EXPR isPumpRunning() [L934] tmp___0 = isPumpRunning() [L936] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L937] COND TRUE \read(methAndRunningLastTime) [L939] CALL __automaton_fail() [L910] reach_error() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 640 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 619 mSDsluCounter, 2342 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1490 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 310 IncrementalHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 852 mSDtfsCounter, 310 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 244 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=558occurred in iteration=10, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 264 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 586 NumberOfCodeBlocks, 586 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 570 ConstructedInterpolants, 0 QuantifiedInterpolants, 1209 SizeOfPredicates, 2 NumberOfNonLiveVariables, 286 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 90/94 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-19 08:05:06,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d79d105-a3d6-4746-a5b9-a4168ba07c27/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE